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.

$97 CHEAP FLIGHTS from Illinois to Philadelphia

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Cheap Flights from Illinois to Philadelphia

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Philadelphia

Fri, Nov 13 - Tue, Nov 17

7:50 pm - 7:21 amORD Chicago O'Hare Intl-PHL Philadelphia

10h 31m1 stop Atlanta Hartsfield-Jackson

12:36 pm - 6:30 pmPHL Philadelphia-ORD Chicago O'Hare Intl

6h 54m1 stop Atlanta Hartsfield-Jackson

$171Frontier

Fri, Nov 13 - Mon, Nov 16

7:50 pm - 7:21 amORD Chicago O'Hare Intl-PHL Philadelphia

10h 31m1 stop Atlanta Hartsfield-Jackson

9:09 pm - 10:43 pmPHL Philadelphia-ORD Chicago O'Hare Intl

2h 34mnonstop

$171Frontier

Wed, Oct 28 - Thu, Oct 29

6:00 pm - 9:05 pmMDW Chicago Midway-PHL Philadelphia

2h 05mnonstop

11:30 am - 12:35 pmPHL Philadelphia-MDW Chicago Midway

2h 05mnonstop

$185Southwest

Thu, Nov 5 - Thu, Nov 12

3:50 pm - 6:45 pmMDW Chicago Midway-PHL Philadelphia

1h 55mnonstop

1:50 pm - 3:05 pmPHL Philadelphia-MDW Chicago Midway

2h 15mnonstop

$185Southwest

Wed, Nov 11 - Mon, Nov 16

5:47 pm - 9:00 pmORD Chicago O'Hare Intl-PHL Philadelphia

2h 13mnonstop

7:26 am - 9:07 amPHL Philadelphia-ORD Chicago O'Hare Intl

2h 41mnonstop

$185American Airlines

Mon, Nov 2 - Tue, Nov 3

6:30 am - 9:40 amORD Chicago O'Hare Intl-PHL Philadelphia

2h 10mnonstop

5:52 am - 7:27 amPHL Philadelphia-ORD Chicago O'Hare Intl

2h 35mnonstop

$185American Airlines

Wed, Dec 9 - Wed, Dec 9

9:00 am - 12:14 pmORD Chicago O'Hare Intl-PHL Philadelphia

2h 14mnonstop

5:00 pm - 6:35 pmPHL Philadelphia-ORD Chicago O'Hare Intl

2h 35mnonstop

$185United Airlines

Thu, Nov 5 - Sat, Nov 14

6:42 am - 9:52 amORD Chicago O'Hare Intl-PHL Philadelphia

2h 10mnonstop

6:15 am - 7:50 amPHL Philadelphia-ORD Chicago O'Hare Intl

2h 35mnonstop

$185United Airlines

Wed, Dec 16 - Fri, Jan 8

5:24 pm - 12:52 amORD Chicago O'Hare Intl-PHL Philadelphia

6h 28m1 stop Orlando

6:16 pm - 9:13 amPHL Philadelphia-ORD Chicago O'Hare Intl

15h 57m1 stop Tampa St. Petersburg

$198Multiple Airlines

Thu, Dec 17 - Fri, Jan 8

5:05 am - 2:21 pmORD Chicago O'Hare Intl-PHL Philadelphia

8h 16m1 stop Orlando

6:16 pm - 9:13 amPHL Philadelphia-ORD Chicago O'Hare Intl

15h 57m1 stop Tampa St. Petersburg

$198Multiple Airlines

Recent last minute flight deals from Illinois to Philadelphia

Tue, Oct 13 - Fri, Nov 13

8:46 am - 12:08 amORD Chicago O'Hare Intl-PHL Philadelphia

14h 22m1 stop Orlando

9:09 pm - 10:43 pmPHL Philadelphia-ORD Chicago O'Hare Intl

2h 34mnonstop

$200Frontier

Wed, Oct 14 - Thu, Oct 29

6:21 am - 6:15 pmMDW Chicago Midway-PHL Philadelphia

10h 54m1 stop Atlanta Hartsfield-Jackson

12:36 pm - 11:47 pmPHL Philadelphia-MDW Chicago Midway

12h 11m1 stop Atlanta Hartsfield-Jackson

$212Frontier

Wed, Oct 14 - Thu, Oct 29

6:00 pm - 9:05 pmMDW Chicago Midway-PHL Philadelphia

2h 05mnonstop

6:55 am - 8:00 amPHL Philadelphia-MDW Chicago Midway

2h 05mnonstop

$290Southwest

Wed, Oct 14 - Thu, Oct 29

5:29 pm - 9:07 pmORD Chicago O'Hare Intl-PHL Philadelphia

2h 38mnonstop

5:43 am - 7:25 amPHL Philadelphia-ORD Chicago O'Hare Intl

2h 42mnonstop

$290American Airlines

Wed, Oct 14 - Thu, Oct 29

6:00 pm - 9:05 pmMDW Chicago Midway-PHL Philadelphia

2h 05mnonstop

5:10 pm - 1:10 amPHL Philadelphia-MDW Chicago Midway

9h 00m1 stop Dallas Love Field

$300Southwest

Tue, Oct 13 - Fri, Nov 13

9:00 pm - 12:12 amORD Chicago O'Hare Intl-PHL Philadelphia

2h 12mnonstop

3:56 pm - 5:37 pmPHL Philadelphia-ORD Chicago O'Hare Intl

2h 41mnonstop

$316American Airlines

Tue, Oct 13 - Wed, Oct 14

8:50 am - 2:20 pmORD Chicago O'Hare Intl-PHL Philadelphia

4h 30m1 stop Washington, D.C. Dulles Intl

11:05 am - 12:29 pmPHL Philadelphia-ORD Chicago O'Hare Intl

2h 24mnonstop

$405United Airlines

Tue, Oct 13 - Wed, Oct 21

2:51 pm - 6:14 pmORD Chicago O'Hare Intl-PHL Philadelphia

2h 23mnonstop

6:15 am - 9:38 amPHL Philadelphia-ORD Chicago O'Hare Intl

4h 23m1 stop Washington, D.C. Dulles Intl

$405United Airlines

Tue, Oct 13 - Tue, Oct 13

7:00 am - 11:47 amORD Chicago O'Hare Intl-PHL Philadelphia

3h 47m1 stop Detroit Metropolitan Wayne County

5:29 pm - 8:30 pmPHL Philadelphia-ORD Chicago O'Hare Intl

4h 01m1 stop Detroit Metropolitan Wayne County

$415Delta

Wed, Oct 14 - Wed, Oct 14

5:27 am - 11:10 amORD Chicago O'Hare Intl-PHL Philadelphia

4h 43m1 stop Atlanta Hartsfield-Jackson

5:29 pm - 8:30 pmPHL Philadelphia-ORD Chicago O'Hare Intl

4h 01m1 stop Detroit Metropolitan Wayne County

$415Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$97

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 7% increase in price.

Flight from Chicago O'Hare Airport 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.

Wildwood Crest

Newark

Essington

North Wildwood

Vineland

West Chester

Elkton

Willow Grove

Pottstown

Middletown

Voorhees

Kennett Square

Somers Point

Glen Mills

Wyomissing

Millville

Springfield

Blackwood

Phoenixville

Strasburg

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PHL

$97 Find Cheap Flights from Illinois to Philadelphia - Compare and Save

Cheap Flights from Illinois to Philadelphia

Recent round-trip flight deals from Illinois to Philadelphia

Recent one-way flight deals from Illinois to Philadelphia

Recent last minute flight deals from Illinois to Philadelphia

Recent direct flight deals from Illinois to Philadelphia

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Cheapest flight

FAQs for booking flights from Illinois to Philadelphia

Traveling to a place near Philadelphia?

More options for your flight to Philadelphia

Complete your trip to Philadelphia with a hotel stay or car rental

Information on the airport you'll fly into in Philadelphia

Cabin class types available on flights to Illinois

Find direct flights for Philadelphia

Flights from domestic origins to Philadelphia

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