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$54+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ORD
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
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 December 18, 2024.

Round-trip from

$106
(Frontier)

One-way from

$54
(Frontier)
From Philadelphia to Illinois
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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 December 18, 2024.

This Frontier deal was found by Cheapflights users on 12/17. 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.
Wed 12/257:59 pmPHL - ORD
Nonstop2h 28mFrontier
Wed 1/110:22 pmORD - PHL
Nonstop2h 07mFrontier
Deal found 12/17$106
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/3111:43 amPHL - MDW
Nonstop2h 26mFrontier
Wed 1/18:25 amMDW - PHL
1 stop7h 59mFrontier
Deal found 12/17$169
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/257:59 pmPHL - ORD
Nonstop2h 28mMultiple Airlines
Tue 1/142:02 pmORD - PHL
1 stop7h 14mMultiple Airlines
Deal found 12/16$171
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/249:24 amPHL - ORD
Nonstop2h 29mAmerican Airlines
Wed 1/1511:53 amORD - PHL
Nonstop2h 01mAmerican Airlines
Deal found 12/17$248
This Southwest deal was found by Cheapflights users on 12/16. 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 12/253:55 pmPHL - MDW
Nonstop2h 10mSouthwest
Tue 1/146:15 pmMDW - PHL
Nonstop1h 50mSouthwest
Deal found 12/16$249
This Delta deal was found by Cheapflights users on 12/16. 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 12/256:00 amPHL - ORD
1 stop4h 21mDelta
Tue 1/147:05 amORD - PHL
1 stop6h 45mDelta
Deal found 12/16$267
This Delta deal was found by Cheapflights users on 12/16. 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 12/256:00 amPHL - MDW
1 stop3h 50mDelta
Tue 1/146:00 amMDW - PHL
1 stop5h 04mDelta
Deal found 12/16$267
This FlightHub deal was found by Cheapflights users on 12/17. 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.
Thu 12/195:05 amPHL - STL
1 stop19h 23mFrontier
Mon 12/235:45 pmSTL - PHL
1 stop16h 56mFrontier
Deal found 12/17$300
This Southwest deal was found by Cheapflights users on 12/17. 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 12/244:50 pmPHL - ORD
1 stop6h 10mSouthwest
Wed 1/1511:25 amORD - PHL
2 stops8h 45mSouthwest
Deal found 12/17$307
This United Airlines deal was found by Cheapflights users on 12/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:38 pmPHL - ORD
Nonstop2h 32mUnited Airlines
Wed 1/16:30 pmORD - PHL
Nonstop2h 10mUnited Airlines
Deal found 12/18$315
This Mytrip deal was found by Cheapflights users on 12/17. 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.
Tue 12/312:40 pmPHL - ORD
3 stops22h 49mSpirit Airlines
Fri 1/39:35 pmORD - PHL
2 stops21h 40mSpirit Airlines
Deal found 12/17$333
This American Airlines deal was found by Cheapflights users on 12/16. 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 12/2510:30 amPHL - STL
Nonstop2h 41mAmerican Airlines
Wed 1/16:30 amSTL - PHL
Nonstop2h 09mAmerican Airlines
Deal found 12/16$357

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 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Mon 1/27

6:05 am-3:02 pm

1 stop9h 57m

Chicago Midway

Thu 1/30

7:15 am-8:48 pm

1 stop12h 33m

$108

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 1/9

4:45 pm-10:42 pm

1 stop6h 57m

Chicago O'Hare Intl

Mon 1/13

3:25 pm-2:06 pm

1 stop21h 41m

$116

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Mon 1/13

4:45 pm-10:35 pm

1 stop6h 50m

Chicago O'Hare Intl

Wed 1/15

2:02 pm-10:16 pm

1 stop7h 14m

$126

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 5/2

8:50 pm-10:21 pm

1 stop26h 31m

Chicago O'Hare Intl

Wed 5/7

6:15 am-11:35 pm

1 stop16h 20m

$149

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 1/22

3:55 pm-5:24 pm

Nonstop2h 29m

Chicago O'Hare Intl

Wed 1/29

2:52 pm-5:55 pm

Nonstop2h 03m

$181

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Wed 1/22

6:00 am-12:46 pm

1 stop7h 46m

Chicago Midway

Wed 1/29

10:57 am-7:45 pm

1 stop7h 48m

$200

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Wed 1/22

1:50 pm-3:05 pm

Nonstop2h 15m

Chicago Midway

Sat 1/25

5:00 pm-7:50 pm

Nonstop1h 50m

$202

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 1/9

2:46 pm-8:25 pm

1 stop6h 39m

Chicago O'Hare Intl

Wed 1/15

11:20 am-2:24 pm

Nonstop2h 04m

$211

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 1/9

8:40 am-4:45 pm

2 stops9h 05m

Chicago O'Hare Intl

Wed 1/15

11:25 am-9:45 pm

1 stop9h 20m

$225

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 1/25

8:05 am-1:45 pm

1 stop6h 40m

Chicago O'Hare Intl

Mon 1/27

4:55 pm-10:52 pm

1 stop4h 57m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 54 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 December 18, 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.

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 December 18, 2024.
See what other customers who have flown with American Airlines, Delta and Spirit Airlines 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
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,279 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
9,059 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 $54. Users have also found prices from $70 and $90 on Spirit Airlines and JetBlue, 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: Republic Airways (100%), Japan Airlines (97%), ANA (91%).

  • What are the cheapest flights from Philadelphia to Illinois?

    The cheapest flight price from Philadelphia to Illinois is $68. On average you can expect to pay $1,031. The most popular route, (Philadelphia - Chicago O'Hare Intl), can usually be booked for $127.

  • 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 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$122FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$132Average$478FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$140Average$402FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$150Average$238FlexibilityNo cancel feeOn-time63%
DeltaCheapest$157Average$310FlexibilityNo cancel feeOn-timeN/A
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