$44 Find Cheap Flights from Philadelphia to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Illinois departing on 4/15. 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

Search hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Illinois, 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 Philadelphia to Illinois, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Best Illinois Flight Deals from Philadelphia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Chicago
Chicagononstop$84
Moline
Moline1 stop$199
Peoria
Peoria1 stop$494
Bloomington
Bloomington1 stop$479
Springfield
Springfield2 stops$372
St. Louis
St. Louis1 stop$120

Good to know

Low season

January

High season

July

Cheapest flight

$44
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Philadelphia to Chicago Midway Airport

Flights from Philadelphia to Illinois: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Philadelphia to Illinois 
Verified travelerFlew with American AirlinesPHL-ORDJul 2024
Fly out the night before you have anything to do in Chicago so you don’t get delayed and miss out on plans
MarkFlew with American AirlinesPHL-ORDJun 2024
Just say “no” to PHL and ORD. They are both a nightmare for delays and missed connections.

FAQs - booking Illinois flights

  • How long is the flight to Illinois from Philadelphia?

    Flights to Chicago2h 17m
  • What is the cheapest flight to Illinois from Philadelphia?

    The cheapest ticket to Illinois from Philadelphia found in the last 72 hours was $44 one-way, and $84 round-trip. The most popular route is from Philadelphia to Chicago O'Hare Intl, and the cheapest round-trip airline ticket found on this route in the last 72 hours was $54.

  • Which airlines fly to Illinois?

    American Airlines flies most frequently to Chicago O'Hare Intl from Philadelphia. In general, United Airlines, Air New Zealand and Alaska Airlines fly the most to Illinois.

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

    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 Philadelphia to Illinois.

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

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

    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 from Philadelphia to Illinois with an airline and back with another airline.

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

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

See more FAQs

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Philadelphia to the following destinations at these prices or less: Chicago $187 one-way - $366 round-trip
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be January, February and March. The cheapest month to fly from Philadelphia is January.
  • Morning departure is around 14% more expensive than an evening flight, on average*.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Philadelphia to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Illinois. 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 Philadelphia to Illinois? 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 4659 reviews
8.1Comfort
8.7Crew
7.7Entertainment
8.2Boarding
7.2Food
Airline reviews

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.

10.0 ExcellentRachel, Jan 2025TPA - MDW
Read more Southwest reviews

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.

Employees were kind and funny, as always! Flight was late but no announcements were made for people with tight connections to help them transition quickly. No service due to turbulence.

I like that it was on time and the staff was friendly.

No space for our carryon and needed to check at plane before boarding !

Flight was ok. Boarding wasn’t fun. Flights were delayed by 12 minutes on each leg.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

Seats were really tight and the seat belts did not give enough slack.

I like in St George and prefer to fly out of CDC than SGU. Hopefully, they will continue the flights out of Cedar

Broken jer bridge. Poor communication about it. Lost 2 of 4 luggage pieces

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Newer plane, relatively easy boarding, not a full flight and was told that we could not be moved up because of weight and balance issues. Otherwise, a very good experience.

Other then mechanical/ computer problem and 3.5 hours flight delay the flight was great. I guess that what happened when you fly an old airplane now a day.

I was with one of the last zones to board. It was kind of annoying to finally get called to board and my whole section was already on the plane. Clearly they boarded with previous zones. So by the time I got on board, there were no spaces for my luggage above my head. I had to put my luggage 4+ rows behind me, which meant that I had to wait even longer to get off the plane, since I had to wait for those rows to clear the aisle before I could retrieve my luggage and exit the plane. This also held up the plane cleaners, as they couldn't service my row until I cleared it, so they were all standing there waiting for me, while I'm standing there waiting for the other passengers to clear the aisle. Anyways, I wasn't in a rush this time, so I just waited, but I could see that being a problem in the future. Now, I could have checked my luggage, of course, but coincidentally, a friend of mine on the same flight got their luggage damaged (wheel completely knocked off) and was told by the Baggage Attendant in the airport that Delta doesn't "cover wheel damage" on luggage. This was disappointing to hear. I'm glad I didn't check mine through. If it were my luggage, I'd be highly frustrated to hear that. It makes me not want to check my luggage in the future.

The dear was very limited in space. I could put my water bottle in seat basket. Also, there was no inflight entertainment in the delta app?

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

They canceled our flight and left us stranded to figure it out

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

Everything was very good. Was able to change a make run flight leaving on direct earlier in the app -seamless!!! Well done

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

My flight back my reservations were list because they said I didn't pay my pet fee when I had a receipt

For coast to coast travel the A321 and even the NEO, even in first class will never be excellent. That would take a B787 or 777 to accomplish.

The one gate agent was very abrupt and rude. Not a good look for American for the day

Departure more than an hour later. Conexion/waiting time at the airport was more than 7 hours :(

I was unhappy with having the seat I chose changed at the last minute. I was moved to an aisle seat which did not recline and was next to the bathroom. The bathroom odors made the flight entirely unpleasant. Having carefully chosen my seat months before I was not pleased with my AA experience. In addition, they ran out of tea during flight service, really?

Pilots showed up late because they decided to stop and get something to eat instead of going straight to our gate, Forcing an 1 1/2 hour delay, and missed flight. Shame on the pilots.

It was a bus not a flight. Okay bus ride.

Very easy with the app to board and staff skills

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The plane was clean, the crew was friendly and helpful. It’s a low cost airline so there was no food, drinks or in flight entertainment but we didn’t expect any of these things. In the room for improvement department, they should install USB ports in seats to charge mobile devices.

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

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Charging $74 for one checked bag is outrageous. I will never fly Frontier again.

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

I was surprised that all baggage, including carry on, were charged. Each additional bag went up in cost. Really disappointed in the additional costs.

Book cheap flights from Philadelphia to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights from Philadelphia to Illinois found on KAYAK in the last 72 hours.
4/8Tue
nonstopFrontier
2h 20mPHL-MDW
4/12Sat
1 stopFrontier
9h 58mMDW-PHL
$84
3/3Mon
1 stopFrontier
6h 43mPHL-MDW
3/5Wed
1 stopFrontier
6h 59mMDW-PHL
$108
4/16Wed
nonstopAmerican Airlines
2h 31mPHL-ORD
4/23Wed
nonstopAmerican Airlines
2h 01mORD-PHL
$177
2/12Wed
nonstopSouthwest
2h 15mPHL-MDW
2/19Wed
nonstopSouthwest
1h 50mMDW-PHL
$197
2/25Tue
1 stopAmerican Airlines
6h 16mPHL-MLI
3/11Tue
1 stopAmerican Airlines
6h 28mMLI-PHL
$199
2/25Tue
1 stopDelta
5h 19mPHL-MLI
3/12Wed
1 stopDelta
6h 42mMLI-PHL
$217
2/15Sat
nonstopUnited Airlines
2h 31mPHL-ORD
2/15Sat
nonstopUnited Airlines
2h 04mORD-PHL
$219
2/22Sat
nonstopSouthwest
2h 30mPHL-MDW
2/25Tue
nonstopSouthwest
1h 50mMDW-PHL
$219
2/25Tue
1 stopDelta
7h 31mPHL-MLI
3/10Mon
1 stopDelta
6h 42mMLI-PHL
$268
2/4Tue
1 stopUnited Airlines
5h 18mPHL-MLI
2/8Sat
1 stopUnited Airlines
4h 41mMLI-PHL
$269

Search by stops

Search by airline

Search by price

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Philadelphia to Illinois found on KAYAK in the last 72 hours.
4/15Tue
nonstopFrontier
2h 20mPHL-MDW
$44
3/24Mon
1 stopFrontier
7h 56mPHL-ORD
$54
4/2Wed
nonstopUnited Airlines
2h 24mPHL-ORD
$89
2/25Tue
nonstopSouthwest
2h 15mPHL-MDW
$99
4/22Tue
1 stopDelta
6h 55mPHL-ORD
$99
2/18Tue
nonstopAmerican Airlines
2h 25mPHL-ORD
$110
2/18Tue
1 stopDelta
4h 16mPHL-ORD
$120
2/18Tue
2 stopsSouthwest
9h 00mPHL-ORD
$125
2/22Sat
nonstopUnited Airlines
2h 30mPHL-ORD
$132
2/22Sat
nonstopAmerican Airlines
2h 42mPHL-STL
$174

Search by stops

Search by airline

Search by price

Last minute flights from Philadelphia to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Philadelphia to Illinois that are departing in the next 10 days.
1/25Sat
multi-stopFrontier
6h 26mPHL-MDW
2/3Mon
multi-stopFrontier
15h 43mMDW-PHL
$216
1/23Thu
multi-stopFrontier
14h 47mPHL-STL
2/2Sun
multi-stopFrontier
22h 37mSTL-PHL
$241
1/25Sat
multi-stopUnited Airlines
25h 05mPHL-ORD
1/26Sun
nonstopUnited Airlines
2h 10mORD-PHL
$389
1/24Fri
nonstopSouthwest
2h 20mPHL-MDW
2/20Thu
nonstopSouthwest
1h 55mMDW-PHL
$575
1/24Fri
nonstopSouthwest
2h 20mPHL-MDW
2/20Thu
multi-stopSouthwest
6h 25mMDW-PHL
$585
1/21Tue
nonstopAmerican Airlines
2h 29mPHL-ORD
2/11Tue
nonstopAmerican Airlines
2h 07mORD-PHL
$610
1/24Fri
nonstopAmerican Airlines
2h 27mPHL-ORD
2/20Thu
nonstopAmerican Airlines
1h 59mORD-PHL
$615
1/25Sat
multi-stopDelta
5h 13mPHL-MDW
2/4Tue
multi-stopDelta
3h 52mMDW-PHL
$665
1/24Fri
multi-stopUnited Airlines
18h 06mPHL-ORD
1/25Sat
nonstopUnited Airlines
2h 04mORD-PHL
$680
1/21Tue
multi-stopDelta
3h 54mPHL-MDW
1/22Wed
multi-stopDelta
4h 30mMDW-PHL
$704

Search by stops

Search by airline

Search by price

Everything you need to know for your flight from Philadelphia to Illinois

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.