PHL

$65 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 5/9. 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, 0 bags

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Everything you should know

Cheapest round-trip
$103
Overall average: $267
Frontier
Thu 5/7Mon 5/11
ORD - PHL • Non-stop
Cheapest one-way
$65
Typical prices: $188-$349
Frontier
Sat 5/9
STL - PHL • 1 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

Thu, May 7 - Mon, May 11
Frontier Logo
2:20 pm - 5:34 pm
ORD
-
PHL
2h 14mnonstop
Frontier Logo
6:34 pm - 8:08 pm
PHL
-
ORD
2h 34mnonstop
$103Frontier
Fri, May 1 - Sun, May 3
Frontier Logo
2:20 pm - 5:34 pm
ORD
-
PHL
2h 14mnonstop
Frontier Logo
6:34 pm - 8:08 pm
PHL
-
ORD
2h 34mnonstop
$106Frontier
Thu, Apr 23 - Sat, Apr 25
Multiple Airlines Logo
2:20 pm - 5:34 pm
ORD
-
PHL
2h 14mnonstop
Multiple Airlines Logo
6:15 am - 9:17 pm
PHL
-
ORD
16h 02m
1 stop
$111Multiple Airlines
Fri, May 8 - Tue, May 12
Multiple Airlines Logo
2:20 pm - 5:34 pm
ORD
-
PHL
2h 14mnonstop
Multiple Airlines Logo
9:00 am - 6:15 pm
PHL
-
ORD
10h 15m
1 stop
$112Multiple Airlines
Sat, May 16 - Sat, May 23
United Airlines Logo
7:00 pm - 12:45 am
CMI
-
PHL
4h 45m
1 stop
United Airlines Logo
9:21 am - 12:50 pm
PHL
-
CMI
4h 29m
1 stop
$258United Airlines
Sat, Mar 14 - Mon, Mar 23
United Airlines Logo
5:25 pm - 12:16 am
PIA
-
PHL
5h 51m
1 stop
United Airlines Logo
8:00 am - 12:43 pm
PHL
-
PIA
5h 43m
1 stop
$269United Airlines
Wed, Jun 3 - Tue, Jun 9
Delta Logo
11:00 am - 5:17 pm
MLI
-
PHL
5h 17m
1 stop
Delta Logo
4:05 pm - 10:31 pm
PHL
-
MLI
7h 26m
1 stop
$269Delta
Sat, Feb 28 - Tue, Mar 3
American Airlines Logo
5:00 am - 9:40 am
BMI
-
PHL
3h 40m
1 stop
American Airlines Logo
9:30 am - 2:35 pm
PHL
-
BMI
6h 05m
1 stop
$274American Airlines
Wed, Feb 25 - Tue, Mar 10
American Airlines Logo
2:02 pm - 9:54 pm
MLI
-
PHL
6h 52m
1 stop
American Airlines Logo
3:35 pm - 8:59 pm
PHL
-
MLI
6h 24m
1 stop
$274American Airlines
Fri, May 29 - Tue, Jun 2
Delta Logo
5:16 pm - 12:59 am
MLI
-
PHL
6h 43m
1 stop
Delta Logo
12:03 pm - 4:36 pm
PHL
-
MLI
5h 33m
1 stop
$279Delta
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$65
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 8% lower on average.
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
Voorhees
Somers Point
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)