PHL

$55 Find Cheap Flights from Illinois 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 to Philadelphia departing on 12/15. 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
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Illinois to Philadelphia

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

Recent round-trip flight deals from Illinois to Philadelphia

Mon, Nov 10 - Mon, Nov 10
Frontier Logo
8:26 am - 11:39 amORD-PHL
2h 13mnonstop
Frontier Logo
7:04 pm - 8:42 pmPHL-ORD
2h 38mnonstop
$108Frontier
Find Deal
Thu, Nov 13 - Sat, Nov 15
Frontier Logo
1:37 pm - 12:19 amMDW-PHL
9h 42m1 stop
Frontier Logo
6:19 am - 11:30 amPHL-MDW
30h 11m1 stop
$110Frontier
Find Deal
Thu, Nov 13 - Thu, Nov 13
Frontier Logo
5:11 am - 11:29 amORD-PHL
5h 18m1 stop
Frontier Logo
7:54 pm - 5:15 pmPHL-ORD
22h 21m1 stop
$110Frontier
Find Deal
Fri, Jan 9 - Sun, Jan 11
Multiple Airlines Logo
3:15 pm - 6:26 pmORD-PHL
2h 11mnonstop
Multiple Airlines Logo
8:05 pm - 9:23 amPHL-ORD
14h 18m1 stop
$126Multiple Airlines
Find Deal
Tue, Dec 9 - Thu, Dec 11
Multiple Airlines Logo
3:26 pm - 11:16 pmORD-PHL
6h 50m1 stop
Multiple Airlines Logo
6:00 am - 10:30 amPHL-ORD
5h 30m1 stop
$128Multiple Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 10
United Airlines Logo
9:00 am - 12:07 pmORD-PHL
2h 07mnonstop
United Airlines Logo
1:15 pm - 2:35 pmPHL-ORD
2h 20mnonstop
$134United Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
American Airlines Logo
8:29 am - 11:30 amORD-PHL
2h 01mnonstop
American Airlines Logo
4:04 pm - 5:39 pmPHL-ORD
2h 35mnonstop
$139American Airlines
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Thu, Nov 27 - Tue, Dec 2
American Airlines Logo
5:00 am - 7:57 amORD-PHL
1h 57mnonstop
American Airlines Logo
9:25 pm - 10:56 pmPHL-ORD
2h 31mnonstop
$144American Airlines
Find Deal
Tue, Dec 9 - Sat, Dec 13
Spirit Airlines Logo
3:26 pm - 11:16 pmORD-PHL
6h 50m1 stop
Spirit Airlines Logo
4:00 pm - 12:09 amPHL-ORD
9h 09m1 stop
$150Spirit Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
United Airlines Logo
11:05 am - 2:07 pmORD-PHL
2h 02mnonstop
United Airlines Logo
6:30 am - 7:56 amPHL-ORD
2h 26mnonstop
$158United Airlines
Find Deal

Everything you should know

Cheapest round-trip
$108
Overall average: $256
Frontier
Mon 11/10Mon 11/10
ORD - PHL • Non-stop
Cheapest one-way
$55
Typical prices: $197-$360
Frontier
Mon 12/15
STL - PHL • 1 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 Philadelphia!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$55
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Philadelphia

FAQs for booking flights from Illinois to Philadelphia

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois 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 Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood Crest
Newark
North Wildwood
Vineland
West Chester
Essington
Elkton
Pottstown
Willow Grove
Kennett Square
Somers Point
Voorhees
Middletown
Wyomissing
Glen Mills
Phoenixville
Bird in Hand
Blackwood
Millville
Strasburg

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia

Philadelphia (PHL)

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