PHL

$63 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 1/23. 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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Everything you should know

Cheapest round-trip
$116
Overall average: $314
Frontier
Sun 1/25Mon 1/26
ORD - PHL • 1 stop
Cheapest non-stop
$117
Typical prices: $234-$556
Frontier
Thu 1/8Mon 2/9
ORD - PHL • Non-stop
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We hope you love your trip to Philadelphia!
Flight Deals
Useful Info
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

Sun, Jan 25 - Mon, Jan 26
Frontier Logo
3:05 pm - 12:25 am
ORD
-
PHL
8h 20m1 stop
Frontier Logo
7:47 pm - 9:27 pm
PHL
-
ORD
2h 40mnonstop
$116Frontier
Thu, Jan 8 - Mon, Feb 9
Frontier Logo
3:32 pm - 6:47 pm
ORD
-
PHL
2h 15mnonstop
Frontier Logo
7:47 pm - 9:27 pm
PHL
-
ORD
2h 40mnonstop
$117Frontier
Fri, Jan 23 - Mon, Jan 26
Spirit Airlines Logo
8:43 pm - 8:47 am
ORD
-
PHL
11h 04m1 stop
Spirit Airlines Logo
6:11 pm - 11:22 am
PHL
-
ORD
18h 11m1 stop
$118Spirit Airlines
Fri, Jan 23 - Mon, Jan 26
Spirit Airlines Logo
8:43 pm - 8:47 am
ORD
-
PHL
11h 04m1 stop
Spirit Airlines Logo
6:11 pm - 11:22 am
PHL
-
ORD
18h 11m1 stop
$119Spirit Airlines
Wed, Jan 14 - Thu, Jan 15
Multiple Airlines Logo
5:15 am - 8:47 am
ORD
-
PHL
26h 32m1 stop
Multiple Airlines Logo
4:45 pm - 6:25 pm
PHL
-
ORD
2h 40mnonstop
$120Multiple Airlines
Fri, Feb 6 - Mon, Feb 9
Multiple Airlines Logo
11:18 am - 7:48 pm
STL
-
PHL
7h 30m1 stop
Multiple Airlines Logo
8:35 pm - 10:27 pm
PHL
-
STL
26h 52m1 stop
$141Multiple Airlines
Sat, Feb 14 - Tue, Feb 17
Southwest Logo
10:15 am - 1:10 pm
MDW
-
PHL
1h 55mnonstop
Southwest Logo
6:20 pm - 7:35 pm
PHL
-
MDW
2h 15mnonstop
$149Southwest
Fri, Jan 23 - Tue, Jan 27
Southwest Logo
5:30 pm - 8:20 pm
MDW
-
PHL
1h 50mnonstop
Southwest Logo
12:15 pm - 1:30 pm
PHL
-
MDW
2h 15mnonstop
$158Southwest
Wed, Jan 21 - Sat, Jan 24
Delta Logo
6:35 pm - 11:13 pm
MDW
-
PHL
3h 38m1 stop
Delta Logo
6:00 am - 8:52 am
PHL
-
MDW
3h 52m1 stop
$178Delta
Mon, Feb 16 - Sat, Feb 21
Delta Logo
5:59 pm - 12:24 am
EVV
-
PHL
5h 25m1 stop
Delta Logo
6:55 am - 11:36 am
PHL
-
EVV
5h 41m1 stop
$342Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$63
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 17% 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
Essington
West Chester
Elkton
Pottstown
Willow Grove
Kennett Square
Somers Point
Voorhees
Middletown
Wyomissing
Glen Mills
Phoenixville
Bird in Hand
Blackwood
Strasburg
Millville

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia

Philadelphia (PHL)