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$41+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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Cheap flight deals from Philadelphia to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

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 November 20, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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.
Fri 12/1310:57 pmPHL - MDW
Nonstop2h 23mFrontier
Mon 12/168:15 amMDW - PHL
Nonstop2h 03mFrontier
Deal found 11/20$76
This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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.
Fri 12/610:19 pmPHL - ORD
Nonstop2h 28mFrontier
Mon 12/94:58 pmORD - PHL
Nonstop2h 07mFrontier
Deal found 11/20$77
This Kiwi.com deal was found by Cheapflights users on 11/19. 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.
Fri 12/610:19 pmPHL - ORD
Nonstop2h 28mMultiple Airlines
Tue 12/109:58 amORD - PHL
1 stop10h 49mMultiple Airlines
Deal found 11/19$123
This American Airlines deal was found by Cheapflights users on 11/19. 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.
Sat 12/79:40 amPHL - ORD
Nonstop2h 28mAmerican Airlines
Sat 12/72:55 pmORD - PHL
Nonstop2h 00mAmerican Airlines
Deal found 11/19$166
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Mon 12/91:15 pmPHL - ORD
Nonstop2h 24mUnited Airlines
Tue 12/102:26 pmORD - PHL
Nonstop2h 03mUnited Airlines
Deal found 11/20$171
This Southwest deal was found by Cheapflights users on 11/18. 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 12/57:35 amPHL - MDW
Nonstop2h 10mSouthwest
Tue 12/106:15 pmMDW - PHL
Nonstop1h 50mSouthwest
Deal found 11/18$172
This Delta deal was found by Cheapflights users on 11/18. 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 12/412:31 pmPHL - ORD
1 stop5h 38mDelta
Sat 12/145:20 pmORD - PHL
1 stop4h 59mDelta
Deal found 11/18$196
This Delta deal was found by Cheapflights users on 11/19. 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 12/45:30 amPHL - MDW
1 stop5h 20mDelta
Wed 12/1112:44 pmMDW - PHL
1 stop4h 35mDelta
Deal found 11/19$196
This Mytrip deal was found by Cheapflights users on 11/18. 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 12/57:27 pmPHL - ORD
2 stops15h 50mSpirit Airlines
Tue 12/109:58 amORD - PHL
2 stops20h 50mSpirit Airlines
Deal found 11/18$201
This eDestinos deal was found by Cheapflights users on 11/19. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/217:46 pmPHL - MDW
1 stop24h 56mMultiple Airlines
Fri 1/38:20 amMDW - PHL
2 stops27h 12mMultiple Airlines
Deal found 11/19$226
This Mytrip deal was found by Cheapflights users on 11/18. 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.
Fri 12/65:10 amPHL - EVV
1 stop13h 29mMultiple Airlines
Mon 12/96:19 pmEVV - PHL
1 stop14h 41mMultiple Airlines
Deal found 11/18$242
This Southwest deal was found by Cheapflights users on 11/19. 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.
Tue 12/34:50 pmPHL - ORD
1 stop6h 10mSouthwest
Sat 12/711:25 amORD - PHL
1 stop7h 20mSouthwest
Deal found 11/19$256

Find flights from Philadelphia to Illinois within your budget

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Fri 12/13

10:57 pm-12:20 am

Nonstop2h 23m

Chicago Midway

Mon 12/16

8:15 am-11:18 am

Nonstop2h 03m

$76

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 12/6

10:19 pm-11:47 pm

Nonstop2h 28m

Chicago O'Hare Intl

Fri 12/13

6:07 pm-9:14 pm

Nonstop2h 07m

$77

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 12/6

10:19 pm-11:47 pm

Nonstop2h 28m

Chicago O'Hare Intl

Tue 12/10

9:58 am-9:47 pm

1 stop10h 49m

$123

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 2/15

4:00 pm-5:30 pm

Nonstop2h 30m

Chicago O'Hare Intl

Sat 2/15

8:36 pm-11:42 pm

Nonstop2h 06m

$132

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 5/7

6:00 am-10:21 pm

1 stop17h 21m

Chicago O'Hare Intl

Mon 5/12

6:15 am-8:20 am

1 stop25h 05m

$152

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Mon 12/9

1:15 pm-2:39 pm

Nonstop2h 24m

Chicago O'Hare Intl

Tue 12/10

2:26 pm-5:29 pm

Nonstop2h 03m

$171

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Thu 12/5

7:35 am-8:45 am

Nonstop2h 10m

Chicago Midway

Tue 12/10

6:15 pm-9:05 pm

Nonstop1h 50m

$172

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 2/26

10:13 am-3:40 pm

1 stop6h 27m

Chicago O'Hare Intl

Mon 3/3

1:00 pm-9:52 pm

1 stop7h 52m

$180

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Tue 1/14

6:00 am-12:46 pm

1 stop7h 46m

Chicago Midway

Sat 1/18

10:57 am-7:45 pm

1 stop7h 48m

$196

PhiladelphiaMoline

PHL - MLI

PHLMLI

Philadelphia

Sat 1/25

5:54 pm-10:22 pm

1 stop5h 28m

Moline Quad-City

Sat 2/1

5:00 am-11:35 am

1 stop5h 35m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 56 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.

Travel insights for flights from Philadelphia to Illinois

Get recent, data-driven insights about flights from Philadelphia to Illinois including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $232). Flying from Philadelphia to Illinois in June is currently the most expensive (average of $308). 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 November 20, 2024.

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 November 20, 2024.

The most flights from PHL to USIL are scheduled on a Wednesday (39 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 November 20, 2024.
See what other customers who have flown with American Airlines, Spirit Airlines and Frontier from Philadelphia to Illinois have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,014 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,756 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

JetBlue
7.5
Good
3,394 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,171 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,014 reviews

Overall

8.1

Entertainment

7.7

Comfort

8.1

Crew

8.7

Boarding

8.2

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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 $41. Users have also found prices from $69 and $69 on American Airlines and Southwest, 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: Copa Airlines (100%), Republic Airways (100%), Japan Airlines (99%).

  • What are the cheapest flights from Philadelphia to Illinois?

    The cheapest flight price from Philadelphia to Illinois is $44. On average you can expect to pay $714. The most popular route, (Philadelphia - Chicago O'Hare Intl), can usually be booked for $120.

  • 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, September is the cheapest month in which you can book a flight from Philadelphia to Illinois (average of $232). Flying from Philadelphia to Illinois in June is currently the most expensive (average of $308). 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.

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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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$121FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$132Average$486FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$142Average$321FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$150Average$235FlexibilityNo cancel feeOn-time63%
DeltaCheapest$157Average$343FlexibilityNo cancel feeOn-timeN/A
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