DEN - PHL

$43 Find Cheap Flights from Denver to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Philadelphia departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Philadelphia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Philadelphia, as well as popular online travel agencies
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Cheap Flight Deals from Denver to Philadelphia (DEN-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Denver to Philadelphia

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Denver to Philadelphia.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:50 pm - 5:20 amDEN-PHL
3h 30mnonstop
6:40 am - 9:01 amPHL-DEN
4h 21mnonstop
$88Frontier
Find Deal
Tue, Apr 1 - Tue, Apr 8
11:45 pm - 5:10 amDEN-PHL
3h 25mnonstop
6:40 am - 9:01 amPHL-DEN
4h 21mnonstop
$131Frontier
Find Deal
Sat, Mar 29 - Wed, Apr 9
7:00 am - 12:36 pmDEN-PHL
3h 36mnonstop
7:40 pm - 9:53 pmPHL-DEN
4h 13mnonstop
$141American Airlines
Find Deal
Wed, May 7 - Tue, May 13
12:20 am - 5:42 amDEN-PHL
3h 22mnonstop
7:20 pm - 9:48 pmPHL-DEN
4h 28mnonstop
$239American Airlines
Find Deal
Mon, Mar 17 - Tue, Apr 1
6:25 pm - 5:50 amDEN-PHL
9h 25m1 stop
6:00 am - 10:00 amPHL-DEN
6h 00m1 stop
$273Delta
Find Deal
Sat, May 10 - Wed, May 14
5:59 pm - 11:35 pmDEN-PHL
3h 36mnonstop
8:00 am - 10:17 amPHL-DEN
4h 17mnonstop
$275United Airlines
Find Deal
Tue, May 6 - Sat, May 10
12:55 am - 9:20 amDEN-PHL
6h 25m1 stop
11:31 am - 5:08 pmPHL-DEN
7h 37m1 stop
$293Delta
Find Deal
Sun, Apr 13 - Thu, Apr 17
5:40 am - 2:45 pmDEN-PHL
7h 05m1 stop
6:30 am - 1:00 pmPHL-DEN
8h 30m2 stops
$294Southwest
Find Deal
Tue, Apr 1 - Tue, Apr 8
5:59 pm - 11:35 pmDEN-PHL
3h 36mnonstop
8:00 am - 10:17 amPHL-DEN
4h 17mnonstop
$299United Airlines
Find Deal
Tue, May 6 - Thu, May 8
9:05 pm - 11:10 amDEN-PHL
12h 05m1 stop
11:35 am - 8:30 pmPHL-DEN
10h 55m2 stops
$349Southwest
Find Deal
Thu, Apr 3 - Sat, Apr 5

Expert advice for your flight from Denver to Philadelphia

Our travel pros reveal their best tips for your Denver to Philadelphia journey.
Airlines
Frontier

Frontier's Economy Bundle includes a carry-on and seat choice, ideal for budget travelers.


Frontier's Premium Bundle offers priority boarding and extra legroom for just $20 more.

Read more about Frontierby Stefanie Waldek
American Airlines

American's Main Cabin Extra offers early boarding and complimentary drinks, enhancing comfort.


American Airlines' Wi-Fi offers 20 minutes free with an ad, ideal for quick emails.

United Airlines

United's Economy Plus offers six inches more legroom, enhancing comfort on medium-haul flights.


United's Priority Boarding ensures overhead bin space, crucial for carry-on travelers.

Southwest

Southwest offers two free checked bags, perfect for travelers with lots of luggage.


Southwest's EarlyBird Check-In ensures a better boarding position, avoiding the dreaded middle seat.

Read more about Southwestby Blane Bachelor
Airports
DEN

Use the DEN Reserve program for expedited security. Book online up to 3 days in advance for slots from 5 a.m. – 5 p.m.

Read more about DENby Harriet Baskas
PHL

Take the SEPTA train from PHL to Center City for a 30-minute ride. It's cheaper with a Quick Trip or SEPTA Key card.

Read more about PHLby Harriet Baskas
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Frontier and United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines, PHL and DEN

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more

Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

Flights from Denver to Philadelphia - Travel Insights & Trends

Get data-powered insights and trends into flights from Denver to Philadelphia to help you find the cheapest flights, the best time to fly and much more.
Find cheap flights to Philadelphia
Find cheap flights to Philadelphia

Planning a trip from Denver to Philadelphia? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Denver to Philadelphia?

The average price of all round-trip flights from Denver to Philadelphia clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Philadelphia on a Wednesday and more expensive on a Sunday. On your return trip to Denver, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

What is the cheapest month to fly from Denver to Philadelphia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Philadelphia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Denver to Philadelphia is May, where tickets cost $239 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $376 and $351 respectively.

How far in advance should I book a flight from Denver to Philadelphia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Philadelphia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Denver to Philadelphia, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

January

High season

July

Cheapest flight

$43
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Denver to Philadelphia

When to book flights from Denver to Philadelphia

Are your dates flexible? Find out the best times to travel from Denver to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Denver to Philadelphia: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Denver to Philadelphia 
PaulFlew with American AirlinesDEN-PHLJan 2025
Contour airlines was great for a connection through Philadelphia. I had a tight connection and thought I might not make it, but I called and was able to talk with an actual person. They called ahead to the gate, and the plane held the door open a few minutes for me. Great service, and a very comfortable flight.
Verified travelerFlew with FrontierDEN-PHLMay 2024
Don’t fly frontier. The staff at the airport is rude, be careful.

FAQs for booking flights from Denver to Philadelphia

  • Where can I sleep at Philadelphia International Airport?

    The Philadelphia Airport Marriott is an airport hotel at PHL. To get to this establishment, you can take the free shuttle that departs every 20min from the terminals or the Skybride from Terminal B. The other option is Minute Suites, ideal if you only need a place to sleep. This establishment is located at the Terminal A-B Link, Airside. They offer day rooms and workstation cubicles where you can nap, work, or relax. Each suite features a daybed sofa, HD TV, Wi-Fi, power outlet, sound masking system, desk, and phone.

  • Does Philadelphia International Airport offer accessible services?

    Elevators and ramps are provided for barrier-free access to passengers in wheelchairs. There are also reserved parking spots, accessible restrooms, and accessible water fountains for passengers with limited mobility. The airport also works with Aira to provide safe passage for passengers with low vision. These passengers also get tactile guide paths and braille signage around the airport. TTY and courtesy telephones are also available for the hearing impaired to request assistance.

  • What are transport options from Philadelphia International Airport?

    You can easily connect to downtown Philadelphia using the SEPTA (Southeastern Pennsylvania Transportation Authority) trains. You can use this connection to get downtown and Amtrack connections, and you’ll find the PHL train platforms at Terminals A-East, B, C, D, and E baggage claim. PHL is also served by the SEPTA bus route, with buses headed from the airport to South Philadelphia and Chester, 69th Street Transportation Center, and Suburban Square in Ardmore. Taxis are also an option at the rank outside the terminals, and car rental companies have their desks in the ground transportation area.

  • What family services are offered at Philadelphia International Airport?

    Passengers traveling with children will have access to the Mamava Suites, which have fold-down desks, power outlets, comfortable seating, and are lockable from inside. For nursing mothers using the sleep pods, they will get 30min free. The airport has also provided several companion care and family restrooms around the airport. The airport also has a kids’ play area at Terminal A-East for those traveling with the older kids. The “Ready For Take-Off” children’s play area features climbing structures, toys, and everything your kid needs to have fun.

  • What is the cheapest flight from Denver to Philadelphia?

    In the last 3 days, the lowest price for a flight from Denver to Philadelphia was $43 for a one-way ticket and $88 for a round-trip.

  • Do I need a passport to fly between Denver and Philadelphia?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to Philadelphia?

    When flying out of Denver you will be using Denver Intl. You will be landing at Philadelphia, also known as Philadelphia.

  • Which airlines offer Wi-Fi service onboard planes from Denver to Philadelphia?

    American Airlines, JetBlue, and Delta offer inflight Wi-Fi service on the Denver to Philadelphia flight route.

  • Which aircraft models fly most regularly from Denver to Philadelphia?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Denver to Philadelphia flight route.

  • Which airline alliances offer flights from Denver to Philadelphia?

    oneworld, and Star Alliance are the airline alliances operating flights between Denver and Philadelphia, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Denver to Philadelphia?

    There are nonstop flights from Denver to Philadelphia on a daily basis.

  • Which is the best airline for flights from Denver to Philadelphia, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Denver to Philadelphia are Southwest and Delta. With an average price for the route of $331 and an overall rating of 8.1, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $338 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Denver to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Denver with another airline. Booking your flights between Denver and PHL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Denver to Philadelphia

  • Looking for a cheap flight? 25% of our users found flights on this route for $145 or less one-way and $259 or less round-trip.
  • Denver International Airport (DEN) is a large airport with one main terminal (Jeppesen Terminal) and three concourses. The airport is big, and for easy movement within the airport complex, DEN has a free shuttle service and an underground train that connects the main terminal to the three concourses.
  • Pets are welcome to travel through DEN. The airport has provided pet relief areas at Gates A, B, and C and an outdoor area outside Door 200, Jeppesen Terminal.
  • Around 850 kg of carbon is emitted per passenger on flights from Denver to Philadelphia. However, flying with American Airlines, Frontier Airlines, and United Airlines significantly reduces this, as these airlines emit 59%, 56%, and 47% less carbon per passenger, respectively.
  • Fly with American Airlines, United Airlines, or Delta for a chance to relax at their premium lounges at DEN before your flight. These airlines operate premium lounges at DEN, requiring your flight ticket and a pre-purchased pass for admittance.
  • If you have some time after your flight to Philadelphia International Airport (PHL), check out the art exhibits around the airport or view planes landing and taking off from the observation decks in each terminal. XpresSpa at PHL also offers manicures, pedicures, massages, and facials, and you’ll find them at Terminals C, D, and F.
See more tips

Prefer to fly direct from Denver to Philadelphia?

Find which airlines fly direct from Denver Intl Airport to Philadelphia Airport, which days they fly and book direct flights.

Direct departures

Denver Intl to Philadelphia

Monday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

Tuesday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

Wednesday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

Thursday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

Friday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

Saturday

Aer Lingus, Air Canada, American Airlines, +5 more

Aer Lingus, Air Canada, +6 more

Sunday

Aer Lingus, Air Canada, American Airlines, +4 more

Aer Lingus, Air Canada, +5 more

See more direct flights

Direct returns

Philadelphia to Denver Intl

Monday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

Tuesday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

Wednesday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

Thursday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

Friday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

Saturday

Aer Lingus, Air Canada, American Airlines, +5 more

Aer Lingus, Air Canada, +6 more

Sunday

Air Canada, American Airlines, British Airways, +4 more

Air Canada, American Airlines, +5 more

See more direct flights
See more direct flights

Top 5 airlines serving from Denver to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Denver to Philadelphia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Philadelphia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
SouthwestOverall score based on 4333 reviews
8.1Comfort
8.7Crew
8.2Boarding
7.6Entertainment
7.1Food
Airline reviews

WiFi on the flight was not working. Thus, entertainment options were limited.

8.0 ExcellentJames, Feb 2025SRQ - DEN
Read more Southwest reviews

WiFi on the flight was not working. Thus, entertainment options were limited.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

Wi Fi was horrible kept cutting out the whole time and too expensive

I really like open seating. I hate that I've heard this is going away. This is one of the unique things that makes Southwest my goto choice.

Boarding was a little late, but made up for it. It was quick to taxi to the runway, since it's a smallish airport.

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

Delta is a premier airline so my expectations are most always met.

Seats are much much more comfortable than United, which is what I usually fly

Zero updates from the pilots for 30 minutes in the tarmac

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

Kind staff. Snacks are small but that’s the new normal.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Had a hard time finding my assigned seat. No attendants to assist.

The negative was the wait at the airport coming back. I checked my bags in, an hour before boarding and I get the notification that my flight was delayed. Rather had gotten the notification while I was at the hotel. Then it was delayed 3 x’s. Ugh!

Plane still had screens for watching movies. Good selection too.

There was no air on the plane and it was very hot.

Good even though flight was delayed, the crew was prompt and efficient.

No access to the Wi-Fi, noisy group of people made it difficult for me to hear through my earbuds. Snacks and drinks - limited service when your seat is at the back of the plane - people up front are always served first and the back gets whatever is left. Not pleased.

In this flight we had selected seating for our family in the middle of the plane in a 2x2 format. The airline changed them to the very back row of the plane and split them to 3x1. Why pay for seats that allow seat selection if the airline will just move them to the worst seats in the plane?

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

The flight was just perfect! We left a few minutes early, had a smooth flight and fortunately had landed before the terrible accident that took off from North Philadelphia airport shortly thereafter.

Timely boarding process, made up for lost time even after a lengthy wait for de-icing

My seat was wonky...hard and not much padding. I sat next to the Jumpseat for the flight attendant. Thoroughly enjoyed not have a third seat in that row! Flight attendants were amazing. I couldn't answer the "food quality" question as there is no food served on my short flight. I commend the pilot as I know it was super gusty when we landed. Thanks

I think I paid for an extra legroom seat and to be honest, there was not a lot of space available for my not very long legs. The flight was totally full and the staff did everything possible to meet the needs of all passengers. My only concern was for the size and spacing of my seat.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

Overall flight was as expected. It would have been better with a couple options for snack instead of only one item and if there was a TV or music as option. But overall satisfied.

American switched my flight to a 5 hour layover then cancelled my whole reservation with no notice and refused refund. Won’t fly with them again.

AA is fabulous. However , Iberia cancelled our Boston - Barcelona flight the morning of the flight - 9/16/24. This was almost a week ago and we have still heard nothing from Iberia/Vueling. Found out from a kayak email that morning that the flight was cancelled. Iberia Customer service reps wouldn’t help us and said to call Vueling. No one answers phone at Vueling. Terrible wild goose chase on DAY OF TRAVEL. AA came to our rescue.

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

The seats were extremely hard and uncomfortable, even for a budget airline.

Boarding was very well executed. Got my bag right away.

Overall experience good. There was no food and seats were not terribly comfortable.

There was nothing to like, flight delayed had to move to different departure areas, disorganized to say the leasr

There were a lot of issues every step of the process. Check in, security, boarding, and dealing with luggage. Plus the money you think you are saving you end up using in hidden fees.

The flight attendant was arguing with a passenger before takeoff. The passenger was frustrated but the flight attendant should have handled it with grace, but instead she was nasty and rude. The seats were comfortable and the flight was uneventful. I wish we didn’t have to pay for drinks or snacks but that’s what you get with a budget airline.

Booked two aisle seats and were switched to an aisle and middle. Not happy.

I fly Frontier often and generally don't have any issues. For some reason, the Denver to Houston's George Bush Intercontinental (IAH) flight always needs to wait on the tarmac in Houston because a gate is not available after landing. I've been stuck for as little as 15 minutes and as much as a little over an hour. I know only fly the Frontier Denver to IAH route when there is not an available flight to Houston Hobby (HOU).

No knowledgeable staff at the counter or in a flight crew. No one knew why once flight landed at Philadelphia Airport then it took them 4 hours from runway to gate . Damn they took 4 hours to reach the gate . They messed up whole night for myself and for my kids.

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