Find flights
Deals
When to book
FAQs & Tips
Airlines

Find cheap flights from Philadelphia to Illinois from $34

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 7/6. 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
0 bags
Thu 6/6
Thu 6/13

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

In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

Save 21% 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

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

Chicago
Chicagononstop$46
Moline
Moline1 stop$508
Peoria
Peoria2 stops$226
Bloomington
Bloomington2 stops$293
Champaign
Champaign1 stop$602
Springfield
Springfield1 stop$328
St. Louis
St. Louisnonstop$58

Good to know

Low season

January

High season

July

Cheapest flight

$34
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Philadelphia to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • 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 to Illinois from Philadelphia 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 to Illinois with an airline and back to Philadelphia 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 to Illinois from Philadelphia 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 $119 one-way - $199 round-trip
  • Morning departure is around 10% more expensive than an evening flight, on average*.
*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

 
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.
8.0
DeltaOverall score based on 10810 reviews
8.0Entertainment
8.2Boarding
7.9Comfort
8.6Crew
7.4Food
Airline reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

2.0 MediocreAnonymous, May 2024AVL - LGA
Read more about Delta reviews

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I was told we'd have a hot breakfast option in first class, so I chose not get a hot breakfast. It was a very strange meal, but the fresh fruit was very good quality. Service was excellent from ORD to ELP. No service from MBS to ORD, not even water. However, when flying American from FNT to ORD, which is a shorter flight, they at least pass out snacks and offer water.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

The flight was delayed instead of leaving at 11 it left at 12.20

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Good movies, iffy pay WiFi, food ok- on time though and that was great!

Awful…flight was delayed more than 12hrs, missed all connections to Fort Wayne, IN, had to get flight to another city 2 hours from my destination, flight was again delayed by 40 mins because they did not have enough fuel, again missed a connection, finally arrived in Indiana at 11pm…but before my 2 hour drive home, ay, no Five That Our Luggage Never Made On The plane and Still In Chicago

Boarding was friendly and quick. While the plane model was older with no live tv, the entertainment was full of movies and tv shows. All food was available. Pilots were very communicative with status of the flight. Flight landed on time.

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

The Palm Springs to Chicago O’Hare was on Time and Palm Springs airport is easier navigate. As our connection was only an approximately 50 minutes, we asked staff for insights for the Chicago airport in terms of transferring into the other terminal from which our flight left, and they were unhelpful. However, the United App was very helpful in terms of notifications and even providing directions. The Chicago to Detroit flight was significantly delayed which we all know does happen. However, there were very few updates or notifications as to why this was happening when we would actually arrive. It took nearly 30 minutes for bags to make it to baggage claim. We arrived nearly 1 hour late on a 40 minute flight.

Flight cancelled due to fog. No other flights available for 36 hours. Directed by United to book passage on another carrier, and submit receipts for reimbursement. Did that. United now states they will not reimburse. Currently out 2 grand.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

flight delayed so missed connection and this had to rebook for next day

Flight departed PHL one hour late due to late arrival of aircraft. On board services were okay. First class menu does not offer any new items; same desserts (cheese & crackers or Mango sorbet). At least there were no credit card promotions during the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

Terrible Ticketing and Check in process. I learned that AA unilaterally cancelled my premium seating from PHL to CLT and from CLT to JAN. They did, however, refund my money, but my seating was subsequently severely downgraded. They didn’t have a seat for my unless I paid for it! Not cool! Consequently, Check-in took 45 min. AA is usually great, but this was my worst experience with AA ever. Appalling they they arbitrarily cancel my seats threatening loss of flight if I didn’t pay for a seat!!!! -John

We liked quick boarding and on time departure. Seats were very uncomfortable.

Crew was nice, explained emergency protocol very well. Flight took off and arrived on time. Pilot explained the small delay that occurred with docking and providing updates. I would definitely fly spirit again.

The seat are terrible. Don’t even think of sleeping on a Spirit flight. The kids that run the plane aka flight attendants are pretty rude and straight forward. They get the job done but without class.

I had a death in my family and booked my flight on Spirit. My flight was cancelled the morning of my flight, no explanation, no help to rebook, nobody to talk to. The next available flight was 2days later !!!! Terrible airline, will NEVER fly with them again!

First....my trip was from Ft. Myers to Philly (not the other way around). Plane was clean, staff was friendly and flight was efficient with boarding and flight time. Thumbs up all around.

Seats are very small and extremely hard. Too close together. The person next to me had average shoulders and was very far into my 'space'.

They took a horrible route with a lot of turbulence and I eneded up getting sick. Even if the flight takes longer. Don't put people life at risk just to get to the airport on time.

Flights are great except for the ticketing service on the terminal.. Too little employees taking care for lots of flights.

Every thing was fine ,low price,easy on time ,clean, good staff, really no issues

Had to board plan 2x due to lack of security check after 1st boarding

Miserable. The crew was rude, the flight was delayed 5 hours for mechanical reasons and then “weather” even though other planes were leaving.

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

Book cheap flights from Philadelphia to Illinois

Recent round-trip flight deals

5/21Tue
nonstopFrontier
2h 22mPHL-ORD
5/22Wed
nonstopFrontier
2h 03mORD-PHL
$46
5/21Tue
nonstopFrontier
2h 21mPHL-MDW
5/22Wed
nonstopFrontier
2h 03mMDW-PHL
$46
5/29Wed
1 stopSpirit Airlines
13h 30mPHL-ORD
6/4Tue
1 stopSpirit Airlines
9h 41mORD-PHL
$91
5/21Tue
1 stopSpirit Airlines
16h 29mPHL-ORD
5/22Wed
1 stopSpirit Airlines
12h 44mORD-PHL
$94
5/25Sat
nonstopAmerican Airlines
2h 23mPHL-ORD
5/25Sat
nonstopAmerican Airlines
1h 57mORD-PHL
$149
5/18Sat
nonstopAmerican Airlines
2h 24mPHL-ORD
5/21Tue
nonstopAmerican Airlines
1h 54mORD-PHL
$154
7/17Wed
1 stopDelta
6h 46mPHL-ORD
7/20Sat
1 stopDelta
4h 24mORD-PHL
$176
6/29Sat
1 stopDelta
6h 27mPHL-MDW
7/2Tue
1 stopDelta
4h 24mMDW-PHL
$176
6/29Sat
1 stopUnited Airlines
15h 53mPHL-MLI
7/5Fri
1 stopUnited Airlines
5h 27mMLI-PHL
$528
7/12Fri
1 stopUnited Airlines
5h 03mPHL-PIA
7/24Wed
1 stopUnited Airlines
16h 29mPIA-PHL
$538

Search by stops

Search by airline

Search by price

Recent one-way flight deals

7/6Sat
nonstopFrontier
2h 24mPHL-ORD
$34
8/7Wed
nonstopFrontier
2h 13mPHL-MDW
$34
5/14Tue
1 stopSpirit Airlines
13h 30mPHL-ORD
$35
5/21Tue
1 stopSpirit Airlines
27h 45mPHL-ORD
$51
6/26Wed
nonstopAmerican Airlines
2h 25mPHL-ORD
$71
5/25Sat
nonstopAmerican Airlines
2h 23mPHL-ORD
$75
5/25Sat
1 stopDelta
5h 03mPHL-ORD
$88
5/26Sun
1 stopDelta
3h 51mPHL-MDW
$88
6/7Fri
nonstopUnited Airlines
2h 24mPHL-ORD
$105
5/27Mon
1 stopUnited Airlines
4h 53mPHL-STL
$109

Search by stops

Search by airline

Search by price

Last minute flights from Philadelphia to Illinois

Last minute flight, train and bus deals

5/12Sun
nonstopFrontier
2h 17mPHL-MDW
5/15Wed
nonstopFrontier
2h 03mMDW-PHL
$111
5/10Fri
nonstopFrontier
2h 17mPHL-MDW
5/18Sat
nonstopFrontier
2h 01mMDW-PHL
$113
5/12Sun
multi-stopSpirit Airlines
11h 31mPHL-ORD
5/15Wed
multi-stopSpirit Airlines
9h 17mORD-PHL
$180
5/10Fri
nonstopUnited Airlines
2h 25mPHL-ORD
5/13Mon
nonstopUnited Airlines
2h 03mORD-PHL
$220
5/10Fri
nonstopAmerican Airlines
2h 27mPHL-ORD
5/13Mon
nonstopAmerican Airlines
2h 04mORD-PHL
$222
5/12Sun
multi-stopSpirit Airlines
11h 31mPHL-ORD
5/15Wed
multi-stopSpirit Airlines
16h 38mORD-PHL
$227
5/10Fri
multi-stopAmerican Airlines
5h 01mPHL-ORD
5/13Mon
nonstopAmerican Airlines
2h 04mORD-PHL
$228
5/8Wed
multi-stopDelta
6h 17mPHL-ORD
5/14Tue
multi-stopDelta
7h 09mORD-PHL
$239
5/8Wed
multi-stopDelta
5h 06mPHL-MDW
5/14Tue
multi-stopDelta
7h 12mMDW-PHL
$239
5/12Sun
nonstopUnited Airlines
2h 25mPHL-ORD
5/18Sat
nonstopUnited Airlines
2h 03mORD-PHL
$409

Search by stops

Search by airline

Search by price

Philadelphia - Illinois Flights

Departure:

Philadelphia (PHL)United States

Return flight deals:

Illinois - Philadelphia

Cabin classes:

$668
$795
$668
$48