How many flights depart from Illinois to Philadelphia on average per week?

As of May 2026, 351 flights take off from Illinois and land in Philadelphia each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

What is the cheapest airline that flies from Illinois to Philadelphia?

Frontier, Southwest, and United Airlines are the most popular carriers operating from Illinois to Philadelphia

How many flights depart from Illinois to Philadelphia on average per day?

As of May 2026, there are 50 flights per day flying from Illinois to Philadelphia. The most common time of day flights depart is 11:00AM, with 37% of flights taking off in the evening.

What airlines fly to Philadelphia?

United Airlines, American Airlines and Spirit Airlines are the top three most popular airlines that fly to Philadelphia from Illinois according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 7 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Philadelphia?

If you’re flying from a popular airport in Illinois, such as Chicago or Peoria, and flying into Philadelphia, then you can expect flight times to average 3h 08m and 4h 30m, respectively.

When did momondo last update prices for flights from Illinois to Philadelphia Airport?

Prices for flights from Illinois to Philadelphia Airport refresh daily.

How many operators does momondo search for flights from Illinois to Philadelphia Airport?

As of May 2026, there are 6 operators available to choose from for flights from Illinois to Philadelphia Airport.

How old do you have to be to fly from Illinois to Philadelphia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Philadelphia Airport.

What documentation or ID do you need to fly to Philadelphia Airport?

The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$84 Cheap Flights from Illinois to Philadelphia in 2026

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Find the cheapest flights from Illinois to Philadelphia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 pm - 11:32 pm

ORD

PHL

2h 32mnonstop

7:00 am - 12:49 am

PHL

ORD

18h 49m

1 stop

$186Frontier

Thu, Jul 2 - Wed, Jul 8

8:00 pm - 11:32 pm

ORD

PHL

2h 32mnonstop

5:06 pm - 6:47 pm

PHL

ORD

2h 41mnonstop

$189Frontier

Sat, Jun 13 - Sat, Jun 20

5:17 pm - 12:59 am

MLI

PHL

6h 42m

1 stop

4:08 pm - 10:31 pm

PHL

MLI

7h 23m

1 stop

$261Delta

Fri, Jul 3 - Wed, Jul 8

6:52 pm - 12:39 am

MLI

PHL

4h 47m

1 stop

5:15 am - 10:41 am

PHL

MLI

6h 26m

1 stop

$290American Airlines

Wed, Jun 10 - Sun, Jun 14

6:50 pm - 12:59 am

MLI

PHL

5h 09m

1 stop

5:07 am - 11:23 am

PHL

MLI

7h 16m

1 stop

$295American Airlines

Thu, Jul 2 - Tue, Jul 7

5:17 pm - 12:59 am

MLI

PHL

6h 42m

1 stop

10:40 am - 4:37 pm

PHL

MLI

6h 57m

1 stop

$319Delta

Tue, Jun 9 - Fri, Jun 19

2:33 pm - 9:19 pm

PIA

PHL

5h 46m

1 stop

7:00 pm - 11:20 pm

PHL

PIA

5h 20m

1 stop

$319United Airlines

Sat, Jul 11 - Sat, Jul 18

6:00 am - 12:23 pm

MLI

PHL

5h 23m

1 stop

1:35 pm - 7:31 pm

PHL

MLI

6h 56m

1 stop

$341United Airlines

Sat, Aug 22 - Wed, Aug 26

7:44 pm - 8:51 am

PIA

PHL

12h 07m

1 stop

8:43 pm - 2:23 pm

PHL

PIA

18h 40m

1 stop

$352Multiple Airlines

Mon, Jun 8 - Mon, Jun 15

7:44 pm - 8:51 am

PIA

PHL

12h 07m

1 stop

7:20 am - 2:23 pm

PHL

PIA

32h 03m

2 stops

$358Multiple Airlines

Mon, Jun 8 - Mon, Jun 15

Southwest flights from Illinois to Philadelphia

Our best Southwest deals on Illinois to Philadelphia flight tickets

Southwest

May 24

MDW8:45 amChicago Midway

2h 00m

PHL11:45 amPhiladelphia

May 27

PHL5:45 pmPhiladelphia

2h 10m

MDW6:55 pmChicago Midway

$247

Southwest

May 24

MDW8:45 amChicago Midway

2h 00m

PHL11:45 amPhiladelphia

May 24

PHL6:00 pmPhiladelphia

5h 55m

1 stop

MDW10:55 pmChicago Midway

$257

Southwest

May 24

MDW7:25 amChicago Midway

7h 45m

1 stop

PHL4:10 pmPhiladelphia

May 27

PHL9:10 amPhiladelphia

7h 35m

2 stops

MDW3:45 pmChicago Midway

$272

American Airlines flights from Illinois to Philadelphia

Our best American Airlines deals on Illinois to Philadelphia flight tickets

American Airlines

Jun 10

MLI6:52 pmMoline Quad-City

4h 47m

1 stop

PHL12:39 amPhiladelphia

Jun 14

PHL5:15 amPhiladelphia

6h 26m

1 stop

MLI10:41 amMoline Quad-City

$290

American Airlines

Jul 2

MLI6:50 pmMoline Quad-City

5h 09m

1 stop

PHL12:59 amPhiladelphia

Jul 7

PHL5:07 amPhiladelphia

7h 16m

1 stop

MLI11:23 amMoline Quad-City

$295

American Airlines

Jul 15

MLI4:20 pmMoline Quad-City

7h 02m

1 stop

PHL12:22 amPhiladelphia

Jul 23

PHL4:55 pmPhiladelphia

6h 05m

1 stop

MLI10:00 pmMoline Quad-City

$300

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Thu 7/2

8:00 pm-11:32 pm

Nonstop2h 32m

Philadelphia

Wed 7/8

7:00 am-12:49 am

1 stop18h 49m

$186

Quickest round-trip

ChicagoPhiladelphia

ORD - PHL

ORDPHL

Chicago O'Hare Intl

Sat 6/13

8:00 pm-11:32 pm

Nonstop2h 32m

Philadelphia

Sat 6/20

5:06 pm-6:47 pm

Nonstop2h 41m

$189

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Fri 7/3

5:17 pm-12:59 am

1 stop6h 42m

Philadelphia

Wed 7/8

4:08 pm-10:31 pm

1 stop7h 23m

$261

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Wed 6/10

6:52 pm-12:39 am

1 stop4h 47m

Philadelphia

Sun 6/14

5:15 am-10:41 am

1 stop6h 26m

$290

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Thu 7/2

6:50 pm-12:59 am

1 stop5h 09m

Philadelphia

Tue 7/7

5:07 am-11:23 am

1 stop7h 16m

$295

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Tue 6/9

5:17 pm-12:59 am

1 stop6h 42m

Philadelphia

Fri 6/19

10:40 am-4:37 pm

1 stop6h 57m

$319

PeoriaPhiladelphia

PIA - PHL

PIAPHL

Greater Peoria

Sat 7/11

2:33 pm-9:19 pm

1 stop5h 46m

Philadelphia

Sat 7/18

7:00 pm-11:20 pm

1 stop5h 20m

$319

MolinePhiladelphia

MLI - PHL

MLIPHL

Moline Quad-City

Sat 8/22

6:00 am-12:23 pm

1 stop5h 23m

Philadelphia

Wed 8/26

1:35 pm-7:31 pm

1 stop6h 56m

$341

PeoriaPhiladelphia

PIA - PHL

PIAPHL

Greater Peoria

Mon 6/8

7:44 pm-8:51 am

1 stop12h 07m

Philadelphia

Mon 6/15

8:43 pm-2:23 pm

1 stop18h 40m

$352

PeoriaPhiladelphia

PIA - PHL

PIAPHL

Greater Peoria

Mon 6/8

7:44 pm-8:51 am

1 stop12h 07m

Philadelphia

Mon 6/15

7:20 am-2:23 pm

2 stops32h 03m

$358

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from Illinois is in December. Flight prices, which tend to average around $50, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from Illinois averaging around $53.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from Illinois to Philadelphia is on a Friday. Travelers who choose to depart for Philadelphia on a Friday will often find tickets for as low as $258. On the other hand, Monday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $375.

What is the cheapest time of day to depart on your flight to Philadelphia?

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Illinois to Philadelphia in the evening for as low as $258. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the afternoon when prices are around $347.

What is the cheapest Illinois to Philadelphia flight route?

Fly from Chicago O'Hare Intl to Philadelphia for the best Illinois - Philadelphia flight prices

How far in advance should I book a flight from Illinois to Philadelphia?

You are more likely to see cheaper flights to Philadelphia from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Illinois for as low as $209 on momondo.

Can stopping save me money on Illinois to Philadelphia flights?

No. A direct flight is the cheapest option for a flight between Illinois to Philadelphia.

Cheap Illinois to Philadelphia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Philadelphia

Best Price Found	$127
Fastest flight time	1h 50m
Direct flights	Every day
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from Illinois in the past 72 hours is $127. The best round-trip flight deal from Illinois to Philadelphia found on momondo in the last 72 hours is $261.

The fastest flight from Illinois to Philadelphia takes 1h 50m

Direct flights go from Illinois to Philadelphia every day.

There is 1 airport in Philadelphia. From Illinois there are direct flights to Philadelphia (PHL).

Search flight deals

Frequently asked questions about flying from Illinois to Philadelphia

When did momondo last update prices for flights from Illinois to Philadelphia Airport?
Prices for flights from Illinois to Philadelphia Airport refresh daily.
How many operators does momondo search for flights from Illinois to Philadelphia Airport?
As of May 2026, there are 6 operators available to choose from for flights from Illinois to Philadelphia Airport.
How old do you have to be to fly from Illinois to Philadelphia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Philadelphia?
Based on momondo bookings for flights between Illinois and Philadelphia, the leading plane model is Boeing 737-800, making up 25.25% of the total bookings. Other popular models include Boeing 737 MAX 8 with 21.40%, Airbus A319 with 11.80%, and Boeing 737-900 with 8.19%.

Best airlines flying from Illinois to Philadelphia

Compare and see reviews for airlines that fly from Illinois to Philadelphia with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $67	Free Cancellation	Rating 5.6 2,952 reviews	Search Frontier flights
United Airlines	PriceFrom $149	Free Cancellation	Rating 7.4 9,709 reviews	Search United Airlines flights
American Airlines	PriceFrom $156	Free Cancellation	Rating 7.1 11,661 reviews	Search American Airlines flights
Southwest	PriceFrom $168	Free Cancellation	Rating 7.9 4,296 reviews	Search Southwest flights

Wildwood

Rehoboth Beach

Cape May

Wildwood Crest

Ocean City

Cherry Hill

King of Prussia

Newark

Dewey Beach

Reading

Dover

Avalon

North Wildwood

Lewes

Stone Harbor

New Castle

Essington

Vineland

Pottstown

Somers Point

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Philadelphia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Philadelphia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Philadelphia with flexible booking policies on momondo?

momondo does allow users to show only those flights to Philadelphia from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to Philadelphia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Philadelphia.

I’m not ready to book a flight from Illinois to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Illinois and alert you when they change.