DEN - SNN

$485 Find Cheap Flights from Denver to Shannon

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Shannon departing on 11/9. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Shannon, 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 Shannon, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Denver to Shannon (DEN-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Shannon 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Shannon

Sun, Nov 9 - Mon, Nov 17
American Airlines Logo
5:25 pm - 4:45 pmDEN-SNN
16h 20m1 stop
American Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$485American Airlines
Find Deal
Sun, Oct 19 - Tue, Nov 4
American Airlines Logo
6:35 pm - 4:10 pmDEN-SNN
14h 35m1 stop
American Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$486American Airlines
Find Deal
Sun, Nov 9 - Mon, Nov 17
American Airlines Logo
10:23 am - 11:30 amDEN-SNN
18h 07m2 stops
American Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$489American Airlines
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Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
3:45 pm - 10:15 amDEN-SNN
11h 30m1 stop
United Airlines Logo
12:30 pm - 6:49 pmSNN-DEN
13h 19m1 stop
$517United Airlines
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Tue, Oct 14 - Tue, Oct 21
United Airlines Logo
11:28 am - 10:15 amDEN-SNN
15h 47m2 stops
United Airlines Logo
12:30 pm - 10:00 pmSNN-DEN
16h 30m2 stops
$522United Airlines
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Sun, Oct 12 - Tue, Nov 11
British Airways Logo
6:35 pm - 4:10 pmDEN-SNN
14h 35m1 stop
British Airways Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$637British Airways
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Sat, Oct 11 - Tue, Nov 11
Multiple Airlines Logo
6:35 pm - 4:05 pmDEN-SNN
14h 30m1 stop
Multiple Airlines Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$658Multiple Airlines
Find Deal
Sat, Oct 11 - Wed, Nov 12
British Airways Logo
6:35 pm - 4:05 pmDEN-SNN
14h 30m1 stop
British Airways Logo
7:50 am - 3:30 pmSNN-DEN
14h 40m1 stop
$662British Airways
Find Deal
Sat, Oct 11 - Mon, Nov 10
Aer Lingus Logo
6:35 pm - 4:05 pmDEN-SNN
14h 30m1 stop
Aer Lingus Logo
8:05 pm - 10:22 pmSNN-DEN
33h 17m2 stops
$683Aer Lingus
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Wed, Oct 8 - Tue, Nov 11
Multiple Airlines Logo
6:10 am - 4:10 pmDEN-SNN
27h 00m2 stops
Multiple Airlines Logo
2:00 pm - 1:08 amSNN-DEN
18h 08m1 stop
$854Multiple Airlines
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $485 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 29% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$485
Overall average: $612
American Airlines
Sun 11/9Mon 11/17
DEN - SNN • 1 stop
Cheapest one-way
Multiple Airlines
Tue 9/16
DEN - SNN • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Shannon!
Booking Insights

KAYAK's insights & trends for Denver to Shannon flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Shannon, 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 Shannon is August, where tickets cost $553 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,582 and $984 respectively.

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

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 Shannon, 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 Shannon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$485
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Denver to Shannon

When to book flights from Denver to Shannon

Are your dates flexible? Find out the best times to travel from Denver to Shannon 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.

FAQs for booking flights from Denver to Shannon

  • What is the cheapest flight from Denver to Shannon?

    In the last 3 days, the lowest price for a flight from Denver to Shannon was $485 for a round-trip ticket.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Denver and on arrival in Shannon.

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

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Shannon?

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

  • Which is the best airline for flights from Denver to Shannon, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to Shannon are Delta and United Airlines. With an average price for the route of $732 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $723 and an overall rating of 7.4.

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

    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 Shannon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon 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 Shannon?

    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 Shannon with an airline and back to Denver with another airline. Booking your flights between Denver and SNN 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 Shannon?

    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 Shannon from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Denver to Shannon

 
See real verified KAYAK customer reviews for airlines flying from Denver to Shannon. 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 Shannon? 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.
7.9
DeltaOverall score based on 7954 reviews
8.2Boarding
8.5Crew
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

8.0 ExcellentTarun, Sep 2025MCO - LHR
Read more Delta reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

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

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Don’t know they cancelled the flight day before I was to leave. They sent a email at 9:00 pm at night saying they cancelled. That is the smooth way to say we don’t want your business! I think they didn’t have enough people booking so they cancelled the flight! It’s all about the money anymore there is no honesty in business.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

The entertainment package was vast and the selections were very current. Keep updating it was great.

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

Coming from the EU to the USA, Aer Lingus is a very good choice. You clear U.S. border control while still at the departure airport, so when you land in the States, you don’t need to go through the entry process again — very efficient and fast. In terms of comfort, Aer Lingus is better than the usual EU carriers like KLM, Lufthansa, or Air France, and also better than United. There’s more legroom, and the crew is helpful and kind. The food is average but slightly better than most airlines. Overall, the crew is definitely better than on American Airlines, though not quite at the level of Virgin.

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Seat is business could have been a lot cleaner, but space was nice and seat was comfortable

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

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