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$54+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHL
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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Cheap flight deals from Illinois to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Philadelphia (PHL). 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 enero 21, 2025.

Round-trip from

$108
(Kiwi.com)

One-way from

$54
(Trip.com)

Good round-trip deal

$199 or less

Good one-way deal

$124 or less
From Illinois to Philadelphia
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One-way flight from Illinois to Philadelphia
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Price to beat on a one-way flight from Illinois to Philadelphia.
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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 enero 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/14:48 pmMDW - PHL
1 stop6h 13mFrontier
lun. 3/172:22 pmPHL - MDW
1 stop8h 12mFrontier
Deal found 1/20$108
This Flightnetwork deal was found by Cheapflights users on 1/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/15:20 pmSTL - PHL
1 stop13h 10mFrontier
lun. 3/1010:59 pmPHL - STL
1 stop25h 50mFrontier
Deal found 1/21$109
This Flightnetwork deal was found by Cheapflights users on 1/21. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/105:05 amORD - PHL
1 stop25h 31mFrontier
mar. 3/185:13 pmPHL - ORD
1 stop15h 54mFrontier
Deal found 1/21$111
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/25:31 pmORD - PHL
1 stop5h 49mMultiple Airlines
mar. 5/63:30 pmPHL - ORD
1 stop7h 51mMultiple Airlines
Deal found 1/20$130
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/247:07 pmORD - PHL
1 stop14h 06mSpirit Airlines
lun. 3/316:39 pmPHL - ORD
1 stop16h 05mSpirit Airlines
Deal found 1/20$153
This CheapOair deal was found by Cheapflights users on 1/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/204:00 pmSTL - PHL
1 stop26h 54mMultiple Airlines
dom. 2/2312:44 pmPHL - STL
1 stop21h 32mMultiple Airlines
Deal found 1/20$174
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/1812:45 pmORD - PHL
1 stop8h 42mJetBlue
mar. 2/2510:22 amPHL - ORD
1 stop7h 38mJetBlue
Deal found 1/20$181
This United Airlines deal was found by Cheapflights users on 1/21. 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.
lun. 2/247:25 amORD - PHL
Nonstop2h 03mUnited Airlines
lun. 3/109:30 amPHL - ORD
Nonstop2h 31mUnited Airlines
Deal found 1/21$197
This American Airlines deal was found by Cheapflights users on 1/21. 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.
lun. 3/106:30 amORD - PHL
Nonstop1h 57mAmerican Airlines
mar. 3/1810:30 amPHL - ORD
Nonstop2h 32mAmerican Airlines
Deal found 1/21$198
This Southwest deal was found by Cheapflights users on 1/21. 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.
jue. 2/135:30 amMDW - PHL
1 stop6h 30mSouthwest
lun. 2/175:15 amPHL - MDW
Nonstop2h 20mSouthwest
Deal found 1/21$207
This Delta deal was found by Cheapflights users on 1/21. 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.
mar. 2/119:33 amMDW - PHL
1 stop5h 50mDelta
lun. 2/179:33 amPHL - MDW
1 stop4h 32mDelta
Deal found 1/21$217
This Delta deal was found by Cheapflights users on 1/21. 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.
jue. 2/1310:30 amORD - PHL
1 stop4h 35mDelta
lun. 2/176:00 amPHL - ORD
1 stop4h 16mDelta
Deal found 1/21$217

Find flights from Illinois to Philadelphia within your budget

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 enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

sáb. 3/1

4:48 pm-12:01 am

1 stop6h 13m

Philadelphia

lun. 3/17

2:22 pm-9:34 pm

1 stop8h 12m

$108

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

sáb. 2/22

5:40 pm-12:01 am

1 stop5h 21m

Philadelphia

jue. 2/27

10:59 pm-9:27 am

1 stop11h 28m

$109

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

sáb. 3/1

5:20 pm-7:30 am

1 stop13h 10m

Philadelphia

lun. 3/10

10:59 pm-11:49 pm

1 stop25h 50m

$109

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

vie. 5/2

5:31 pm-12:20 am

1 stop5h 49m

Philadelphia

mar. 5/6

3:30 pm-10:21 pm

1 stop7h 51m

$130

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

sáb. 5/17

6:15 am-11:35 pm

1 stop16h 20m

Philadelphia

mié. 5/21

6:00 am-10:21 pm

1 stop17h 21m

$150

ChicagoPhiladelphia

MDW - PHL

MDWPHL

Chicago Midway

mié. 4/30

8:15 am-11:15 am

Nonstop2h 00m

Philadelphia

mié. 4/30

6:35 pm-7:45 pm

Nonstop2h 10m

$177

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

mar. 2/18

12:45 pm-10:27 pm

1 stop8h 42m

Philadelphia

mar. 2/25

10:22 am-5:00 pm

1 stop7h 38m

$181

St. LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

mar. 2/18

4:00 pm-9:59 am

1 stop16h 59m

Philadelphia

jue. 2/20

8:13 am-2:42 pm

1 stop7h 29m

$188

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

lun. 3/10

9:30 pm-12:30 am

Nonstop2h 00m

Philadelphia

jue. 3/20

11:50 am-1:22 pm

Nonstop2h 32m

$197

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

lun. 3/10

6:30 am-9:27 am

Nonstop1h 57m

Philadelphia

mar. 3/18

7:20 am-8:48 am

Nonstop2h 28m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 51 results
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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.

Travel insights for flights from Illinois to Philadelphia

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

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 enero 21, 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 enero 21, 2025.

The most flights from USIL to PHL are scheduled on a Friday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 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 enero 21, 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
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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
3,200 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

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 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 Frontier, with whom users have recently found tickets for as low as $54. However, be on the lookout for offers from Spirit Airlines and Southwest, 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 Spirit Airlines (100%), United Airlines (83%) or Alaska Airlines (82%) 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 $816, our data indicates the cheapest price to be $80. The most popular route (Chicago O'Hare Intl - Philadelphia), is priced around $130.

  • 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
King of Prussia
Vineland
Wildwood
Pottstown
Reading
Cherry Hill
Exton
Ocean City
Essington
Chester
Willow Grove
Newark
Middletown
Millville
Wyomissing
Dover
Ephrata
Dewey Beach
West Chester
Malvern

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Alternative routes for Illinois to Philadelphia

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

Discover the top 5 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 enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$50Average$107FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$136Average$348FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$138Average$459FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$159Average$284FlexibilityNo cancel feeOn-time63%
DeltaCheapest$182Average$262FlexibilityNo cancel feeOn-timeN/A
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