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$58+ Cheap flights from Philadelphia (PHL) to Illinois

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheap flight deals from Philadelphia to Illinois

Keep the following information in mind while searching for Philadelphia to Illinois flight deals. Data was last updated July 1, 2025.

Round-trip from

$160
(FlightHub)

One-way from

$58
(Priceline)

Popular in

March

Cheapest in

September

Average price

$189

Good round-trip deal

$190 or less

Good one-way deal

$104 or less
From Philadelphia to Illinois
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One-way flight from Philadelphia to Illinois
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Highest demand for flights based on searches. 24% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Philadelphia to Illinois.
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Price to beat on a one-way flight from Philadelphia to Illinois.
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Find flight deals from Philadelphia to Illinois

Cheapest flights from Philadelphia to Illinois
Explore the most affordable flight options available from Philadelphia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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.
Tue 8/267:07 pmPHL - ORD
1 stop22h 19mMultiple Airlines
Sun 8/316:35 amORD - PHL
Nonstop2h 17mMultiple Airlines
Deal found 7/1$160
This Frontier deal was found by Cheapflights users on 7/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:38 pmPHL - MDW
Nonstop2h 13mFrontier
Mon 8/46:40 pmMDW - PHL
Nonstop2h 05mFrontier
Deal found 7/1$160
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 8/512:38 pmPHL - ORD
Nonstop2h 24mUnited Airlines
Fri 8/89:23 pmORD - PHL
Nonstop2h 07mUnited Airlines
Deal found 7/1$161
This FlightHub deal was found by Cheapflights users on 6/30. 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.
Tue 8/56:54 pmPHL - ORD
1 stop16h 31mFrontier
Tue 8/125:01 amORD - PHL
1 stop11h 54mFrontier
Deal found 6/30$162
This Southwest deal was found by Cheapflights users on 6/30. 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.
Wed 7/305:55 amPHL - MDW
Nonstop2h 05mSouthwest
Wed 8/611:25 amMDW - PHL
2 stops9h 25mSouthwest
Deal found 6/30$164
This American Airlines deal was found by Cheapflights users on 6/30. 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 8/146:00 amPHL - ORD
Nonstop2h 25mAmerican Airlines
Sun 8/175:00 amORD - PHL
Nonstop2h 03mAmerican Airlines
Deal found 6/30$167
This Southwest deal was found by Cheapflights users on 6/30. 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.
Thu 10/305:30 amPHL - ORD
2 stops10h 50mSouthwest
Thu 11/61:45 pmORD - PHL
1 stop8h 00mSouthwest
Deal found 6/30$188
This Delta deal was found by Cheapflights users on 7/1. 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 8/134:59 pmPHL - ORD
1 stop5h 37mDelta
Sat 8/231:30 pmORD - PHL
1 stop5h 24mDelta
Deal found 7/1$197
This Delta deal was found by Cheapflights users on 6/30. 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 8/66:00 amPHL - MDW
1 stop8h 06mDelta
Wed 8/1312:43 pmMDW - PHL
1 stop6h 11mDelta
Deal found 6/30$197
This Mytrip deal was found by Cheapflights users on 6/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/289:12 pmPHL - ORD
1 stop10h 52mSpirit Airlines
Mon 8/45:05 amORD - PHL
3 stops25h 59mSpirit Airlines
Deal found 6/28$200
This Mytrip deal was found by Cheapflights users on 6/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/149:47 amPHL - RFD
1 stop6h 04mMultiple Airlines
Sun 8/173:41 pmRFD - PHL
2 stops17h 15mMultiple Airlines
Deal found 6/29$200
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 8/156:39 pmPHL - MLI
1 stop5h 59mAmerican Airlines
Mon 8/185:50 pmMLI - PHL
1 stop6h 29mAmerican Airlines
Deal found 6/30$249

Cheapflights Fare Finder

Customize your flight search to find flights from Philadelphia to Illinois 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 July 1, 2025.
Use the filters below to find and compare flights from Philadelphia to Illinois that are best for you.

Fly from

Philadelphia

Fly to

Illinois

Route

Depart

Return

Price

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 8/26

7:07 pm-4:26 pm

1 stop22h 19m

Chicago O'Hare Intl

Sun 8/31

6:35 am-9:52 am

Nonstop2h 17m

$160

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Fri 8/1

10:38 pm-11:51 pm

Nonstop2h 13m

Chicago Midway

Mon 8/4

6:40 pm-9:45 pm

Nonstop2h 05m

$160

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 8/5

12:38 pm-2:02 pm

Nonstop2h 24m

Chicago O'Hare Intl

Fri 8/8

9:23 pm-12:30 am

Nonstop2h 07m

$161

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 8/5

6:54 pm-10:25 am

1 stop16h 31m

Chicago O'Hare Intl

Tue 8/12

5:01 am-5:55 pm

1 stop11h 54m

$162

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Wed 7/30

5:55 am-7:00 am

Nonstop2h 05m

Chicago Midway

Wed 8/6

11:25 am-9:50 pm

2 stops9h 25m

$164

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 8/14

6:00 am-7:25 am

Nonstop2h 25m

Chicago O'Hare Intl

Sun 8/17

5:00 am-8:03 am

Nonstop2h 03m

$167

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 10/30

5:00 am-4:45 pm

1 stop12h 45m

Chicago O'Hare Intl

Thu 11/6

1:45 pm-10:45 pm

1 stop8h 00m

$188

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 7/22

5:21 pm-8:55 am

1 stop16h 34m

Chicago O'Hare Intl

Tue 7/29

6:02 pm-4:16 pm

2 stops21h 14m

$191

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 8/13

2:55 pm-9:34 pm

1 stop7h 39m

Chicago O'Hare Intl

Wed 8/20

2:00 pm-7:10 pm

1 stop4h 10m

$197

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Wed 8/6

6:00 am-1:06 pm

1 stop8h 06m

Chicago Midway

Wed 8/13

12:43 pm-7:54 pm

1 stop6h 11m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 57 results
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Best time to book a flight from Philadelphia to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Philadelphia 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 Philadelphia to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $245). Flying from Philadelphia to Illinois in March is currently the most expensive (average of $321). 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 PHL to IL?

Find hourly flight availability from Philadelphia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Illinois as you normally would.

Weekly flight availability from Philadelphia to Illinois

Explore weekly flight availability from Philadelphia to Illinois. 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 July 1, 2025.

The most flights from PHL to USIL are scheduled on a Tuesday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated July 1, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Philadelphia to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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
4,273 reviews
Southwest
8.0
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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
7,973 reviews
Southwest
8.0
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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
8,858 reviews
Southwest
8.0
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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.
Spirit Airlines
6.3
Okay
8,101 reviews
Southwest
8.0
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Food

7.0

Overall

8.0

Entertainment

7.6

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 Philadelphia to Illinois. 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 from for flights from Philadelphia to Illinois?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to Illinois.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $58. Users have also found prices from $63 and $89 on Spirit Airlines and United Airlines, respectively.

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

    While some choose either Philadelphia - Chicago Midway or Philadelphia - Lambert-St Louis, Philadelphia - Chicago O'Hare Intl is the most popular route from Philadelphia to Illinois.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Illinois on time: Air Canada (86%), ANA (86%), SWISS (84%).

  • What are the cheapest flights from Philadelphia to Illinois?

    The cheapest flight price from Philadelphia to Illinois is $87. On average you can expect to pay $1,211. The most popular route, (Philadelphia - Chicago O'Hare Intl), can usually be booked for $118.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to Illinois 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 Philadelphia to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $245). Flying from Philadelphia to Illinois in March is currently the most expensive (average of $321). 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

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Alternative routes for Philadelphia to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Philadelphia to Illinois

Discover the top 5 airlines that operate flights from Philadelphia to Illinois. 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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$138FlexibilityNo cancel feeOn-time62%
DeltaCheapest$118Average$314FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$146Average$344FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$156Average$449FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$170Average$302FlexibilityNo cancel feeOn-time63%

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