HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Philadelphia

$75+ Cheap flights from Illinois to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Illinois to Philadelphia

Keep the following information in mind while searching for Illinois to Philadelphia flight deals. Data was last updated June 12, 2025.

Round-trip from

$163
(Southwest)

One-way from

$75
(FlightHub)

Popular in

March

Cheapest in

August

Average price

$207

Good round-trip deal

$174 or less

Good one-way deal

$112 or less
From Illinois to Philadelphia
Search Deals
One-way flight from Illinois to Philadelphia
Search Deals
Highest demand for flights based on searches. 29% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Philadelphia.
Search Deals
Price to beat on a one-way flight from Illinois to Philadelphia.
Search Deals

Find flight deals from Illinois to Philadelphia

Cheapest flights from Illinois to Philadelphia
Explore the most affordable flight options available from Illinois to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/91:05 pmMDW - PHL
Nonstop2h 00mSouthwest
Wed 8/135:55 amPHL - MDW
2 stops7h 45mSouthwest
Deal found 6/10$163
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:35 amORD - PHL
Nonstop2h 12mUnited Airlines
Wed 8/612:38 pmPHL - ORD
Nonstop2h 24mUnited Airlines
Deal found 6/10$164
This Cheapflightsfares deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/104:26 pmORD - PHL
Nonstop2h 23mFrontier
Sun 7/138:39 pmPHL - ORD
Nonstop2h 36mFrontier
Deal found 6/10$165
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:00 amORD - PHL
Nonstop2h 00mAmerican Airlines
Sun 11/29:20 pmPHL - ORD
Nonstop2h 34mAmerican Airlines
Deal found 6/11$167
This Cheapflightsfares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/252:05 pmMDW - PHL
Nonstop2h 10mFrontier
Thu 8/285:40 amPHL - MDW
1 stop5h 28mFrontier
Deal found 6/11$174
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:05 amORD - PHL
1 stop10h 11mMultiple Airlines
Mon 7/215:48 pmPHL - ORD
Nonstop2h 39mMultiple Airlines
Deal found 6/12$182
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:05 amORD - PHL
1 stop10h 11mSpirit Airlines
Mon 7/149:12 pmPHL - ORD
1 stop10h 52mSpirit Airlines
Deal found 6/10$188
This Delta deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/33:30 pmORD - PHL
1 stop5h 50mDelta
Tue 9/167:00 amPHL - ORD
1 stop8h 13mDelta
Deal found 6/9$197
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:00 amMDW - PHL
1 stop6h 28mDelta
Tue 10/72:40 pmPHL - MDW
1 stop8h 04mDelta
Deal found 6/10$207
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:21 pmPIA - PHL
1 stop6h 49mAmerican Airlines
Sun 9/75:00 amPHL - PIA
1 stop6h 53mAmerican Airlines
Deal found 6/12$249
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:26 pmMLI - PHL
1 stop6h 33mDelta
Wed 8/1310:30 amPHL - MLI
1 stop6h 49mDelta
Deal found 6/11$249
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/511:00 amSTL - PHL
1 stop12h 21mFrontier
Sat 7/125:30 amPHL - STL
1 stop9h 29mFrontier
Deal found 6/11$256

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Illinois to Philadelphia that are best for you.

Fly from

Illinois

Fly to

Philadelphia

Route

Depart

Return

Price

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

Sat 8/9

1:05 pm-4:05 pm

Nonstop2h 00m

Philadelphia

Wed 8/13

5:55 am-12:40 pm

2 stops7h 45m

$163

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Wed 7/30

7:35 am-10:47 am

Nonstop2h 12m

Philadelphia

Wed 8/6

12:38 pm-2:02 pm

Nonstop2h 24m

$164

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Thu 7/10

4:26 pm-7:49 pm

Nonstop2h 23m

Philadelphia

Sun 7/13

8:39 pm-10:15 pm

Nonstop2h 36m

$165

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Sun 8/10

6:55 am-10:03 am

Nonstop2h 08m

Philadelphia

Sat 8/16

6:00 am-7:25 am

Nonstop2h 25m

$168

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

Mon 8/25

2:05 pm-5:15 pm

Nonstop2h 10m

Philadelphia

Thu 8/28

5:40 am-10:08 am

1 stop5h 28m

$174

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Wed 7/9

5:05 am-4:16 pm

1 stop10h 11m

Philadelphia

Mon 7/21

5:48 pm-7:27 pm

Nonstop2h 39m

$182

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Wed 7/9

5:05 am-4:16 pm

1 stop10h 11m

Philadelphia

Mon 7/14

9:12 pm-7:04 am

1 stop10h 52m

$188

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Wed 9/3

3:30 pm-10:20 pm

1 stop5h 50m

Philadelphia

Tue 9/16

7:00 am-2:13 pm

1 stop8h 13m

$197

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

Sat 7/12

5:53 pm-11:08 pm

1 stop4h 15m

Philadelphia

Tue 7/15

5:30 am-9:45 am

1 stop5h 15m

$209

PeoriaPhiladelphia

PIA - PHL

PIAPHL

Greater Peoria

Thu 9/4

4:21 pm-12:10 am

1 stop6h 49m

Philadelphia

Sun 9/7

5:00 am-10:53 am

1 stop6h 53m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Philadelphia

What is the cheapest month to book a flight from Illinois to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from Illinois to Philadelphia (average of $236). Flying from Illinois to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to PHL?

Find hourly flight availability from Illinois to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Illinois to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Illinois to Philadelphia

Explore weekly flight availability from Illinois to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from USIL to PHL are scheduled on a Thursday (47 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated June 12, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Illinois to Philadelphia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,946 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Entertainment

7.6

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from Illinois?

    Philadelphia (PHL) is the airport you will fly into if you book a flight from Illinois to Philadelphia. It is only a 7.0 mi journey from Philadelphia (PHL) to Philadelphia’s city center.

  • What are the cheapest airlines to fly from Illinois to Philadelphia one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $75. However, be on the lookout for offers from Frontier and United Airlines, as they are both options that can get you from Illinois to Philadelphia for a low price.

  • What are the most popular routes from Illinois to Philadelphia?

    Most travelers choose Chicago O'Hare Intl - Philadelphia, Chicago Midway - Philadelphia or Lambert-St Louis - Philadelphia when deciding on the best route from Illinois to Philadelphia.

  • What are the most reliable airlines from Illinois to Philadelphia?

    Consider Air Canada (87%), Air New Zealand (84%) or United Airlines (83%) when booking your flight. These represent the most reliable airlines when flying from Illinois to Philadelphia.

  • What are the cheapest flights from Illinois to Philadelphia?

    Looking for the cheapest flight from Illinois to Philadelphia? While on average our users pay $1,292, our data indicates the cheapest price to be $79. The most popular route (Chicago O'Hare Intl - Philadelphia), is priced around $134.

  • Can I find deals for flights from Illinois to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Illinois to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Philadelphia.

  • Can I find deals for business class flights from Illinois to Philadelphia?

    Yes. Cheapflights offers flight deals from Illinois to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Philadelphia (average of $236). Flying from Illinois to Philadelphia in March is currently the most expensive (average of $295). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Vineland
Wildwood
Pottstown
King of Prussia
Cherry Hill
Exton
Ocean City
Chester
Essington
Reading
Newark
Middletown
Millville
Ephrata
Camden
Dover
Elkton
Willow Grove
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to John F Kennedy Intl flights
Los Angeles to Newark flights
Dallas/Fort Worth to Newark flights
O'Hare Intl to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
San Francisco to Newark flights
Los Angeles to LaGuardia flights
Atlanta to John F Kennedy Intl flights
Fort Lauderdale to LaGuardia flights
Atlanta to LaGuardia flights
O'Hare Intl to LaGuardia flights
Miami to John F Kennedy Intl flights
Fort Lauderdale to Newark flights
Hobby to LaGuardia flights
Atlanta to Newark flights
Ontario to John F Kennedy Intl flights
Miami to LaGuardia flights
Hobby to John F Kennedy Intl flights
Orlando to LaGuardia flights
Seattle to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
San Francisco to LaGuardia flights
Hobby to Newark flights
Miami to Newark flights
Fort Lauderdale to John F Kennedy Intl flights
O'Hare Intl to Newark flights
Seattle to Newark flights
Orlando to Newark flights
Burbank to Newark flights
Santa Ana to Newark flights
Los Angeles to Reagan-National flights
Denver to LaGuardia flights
Tampa to Newark flights
Minneapolis to LaGuardia flights
George Bush Intcntl to Newark flights
Austin to Newark flights
Los Angeles to Dulles Intl flights
Denver to John F Kennedy Intl flights
Tampa to John F Kennedy Intl flights
George Bush Intcntl to LaGuardia flights
San Diego to John F Kennedy Intl flights
George Bush Intcntl to John F Kennedy Intl flights
Sky Harbor Intl to John F Kennedy Intl flights
Austin to John F Kennedy Intl flights
Minneapolis to Newark flights
Raleigh to LaGuardia flights
Midway to Newark flights
Tampa to LaGuardia flights

Top 6 airlines flying from Illinois to Philadelphia

Discover the top 6 airlines that operate flights from Illinois to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$53Average$120FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$63Average$333FlexibilityNo cancel feeOn-time65%
DeltaCheapest$118Average$472FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$138Average$458FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$152Average$462FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$172Average$291FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.