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Cheap flights from Philadelphia to Illinois from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Illinois departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Philadelphia to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:11 am - 8:47 am
PHL
-
ORD
2h 36mnonstop
Multiple Airlines Logo
12:44 pm - 11:16 pm
ORD
-
PHL
9h 32m
1 stop
$119Multiple Airlines
ven., févr. 27 - mar., mars 3
Frontier Logo
11:34 am - 4:52 pm
PHL
-
ORD
6h 18m
1 stop
Frontier Logo
8:20 am - 11:29 am
ORD
-
PHL
2h 09mnonstop
$121Frontier
mer., févr. 18 - ven., févr. 20
Multiple Airlines Logo
5:30 am - 10:46 am
PHL
-
ORD
6h 16m
1 stop
Multiple Airlines Logo
8:16 pm - 8:44 am
ORD
-
PHL
11h 28m
1 stop
$122Multiple Airlines
sam., févr. 21 - mar., févr. 24
Frontier Logo
5:30 am - 10:51 am
PHL
-
ORD
6h 21m
1 stop
Frontier Logo
10:15 am - 1:24 pm
ORD
-
PHL
2h 09mnonstop
$123Frontier
jeu., févr. 19 - lun., févr. 23
Delta Logo
10:28 am - 4:32 pm
PHL
-
MLI
7h 04m
1 stop
Delta Logo
5:15 pm - 12:57 am
MLI
-
PHL
6h 42m
1 stop
$269Delta
mer., mars 11 - lun., mars 16
Delta Logo
5:00 pm - 10:30 pm
PHL
-
MLI
6h 30m
1 stop
Delta Logo
5:15 pm - 12:57 am
MLI
-
PHL
6h 42m
1 stop
$274Delta
ven., mars 13 - lun., mars 16
United Airlines Logo
1:10 pm - 4:54 pm
PHL
-
MLI
4h 44m
1 stop
United Airlines Logo
5:22 pm - 10:51 pm
MLI
-
PHL
4h 29m
1 stop
$279United Airlines
mer., févr. 11 - dim., févr. 15
United Airlines Logo
12:55 pm - 7:02 pm
PHL
-
MLI
7h 07m
1 stop
United Airlines Logo
3:52 pm - 9:09 pm
MLI
-
PHL
4h 17m
1 stop
$321United Airlines
mer., févr. 18 - sam., févr. 21
American Airlines Logo
10:41 am - 3:49 pm
PHL
-
EVV
6h 08m
1 stop
American Airlines Logo
5:00 am - 11:46 am
EVV
-
PHL
5h 46m
1 stop
$403American Airlines
lun., mars 30 - mar., avr. 7
American Airlines Logo
12:21 pm - 3:49 pm
PHL
-
EVV
4h 28m
1 stop
American Airlines Logo
4:20 pm - 11:54 pm
EVV
-
PHL
6h 34m
1 stop
$413American Airlines
ven., mars 13 - dim., mars 15

Frontier flights from Philadelphia to Illinois

Our best Frontier deals on Philadelphia to Illinois flight tickets
Frontier
Feb 18
PHL11:34 amPhiladelphia
6h 18m
1 stop
ORD4:52 pmChicago O'Hare Intl
Feb 20
ORD8:20 amChicago O'Hare Intl
2h 09m
PHL11:29 amPhiladelphia
$121
Frontier
Feb 19
PHL5:30 amPhiladelphia
6h 21m
1 stop
ORD10:51 amChicago O'Hare Intl
Feb 23
ORD10:15 amChicago O'Hare Intl
2h 09m
PHL1:24 pmPhiladelphia
$123
Frontier
Feb 13
PHL5:30 amPhiladelphia
2h 36m
ORD7:06 amChicago O'Hare Intl
Feb 16
ORD5:22 pmChicago O'Hare Intl
2h 09m
PHL8:31 pmPhiladelphia
$127

Spirit Airlines flights from Philadelphia to Illinois

Our best Spirit Airlines deals on Philadelphia to Illinois flight tickets
Spirit Airlines
Mar 3
PHL8:06 amPhiladelphia
14h 07m
1 stop
ORD9:13 pmChicago O'Hare Intl
Mar 5
ORD8:16 pmChicago O'Hare Intl
11h 28m
1 stop
PHL8:44 amPhiladelphia
$136
Spirit Airlines
Mar 14
PHL8:18 amPhiladelphia
12h 28m
1 stop
ORD7:46 pmChicago O'Hare Intl
Mar 17
ORD4:35 pmChicago O'Hare Intl
6h 41m
1 stop
PHL12:16 amPhiladelphia
$144
Spirit Airlines
Mar 10
PHL8:06 amPhiladelphia
14h 07m
1 stop
ORD9:13 pmChicago O'Hare Intl
Mar 17
ORD5:05 amChicago O'Hare Intl
13h 35m
1 stop
PHL7:40 pmPhiladelphia
$147

momondo 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, momondo users made 832,500 searches. Data last updated janvier 29, 2026.
Use the filters below to find and compare flights from Philadelphia to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

ven. 2/27

7:11 am-8:47 am

Nonstop2h 36m

Chicago O'Hare Intl

mar. 3/3

12:44 pm-11:16 pm

1 stop9h 32m

$119

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

mer. 2/18

11:34 am-4:52 pm

1 stop6h 18m

Chicago O'Hare Intl

ven. 2/20

8:20 am-11:29 am

Nonstop2h 09m

$121

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

sam. 2/21

5:30 am-10:46 am

1 stop6h 16m

Chicago O'Hare Intl

mar. 2/24

8:16 pm-8:44 am

1 stop11h 28m

$122

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

jeu. 2/19

5:30 am-10:51 am

1 stop6h 21m

Chicago O'Hare Intl

lun. 2/23

10:15 am-1:24 pm

Nonstop2h 09m

$123

PhiladelphiaMoline

PHL - MLI

PHLMLI

Philadelphia

mer. 3/11

10:28 am-4:32 pm

1 stop7h 04m

Moline Quad-City

lun. 3/16

5:15 pm-12:57 am

1 stop6h 42m

$269

PhiladelphiaMoline

PHL - MLI

PHLMLI

Philadelphia

ven. 3/13

5:00 pm-10:30 pm

1 stop6h 30m

Moline Quad-City

lun. 3/16

5:15 pm-12:57 am

1 stop6h 42m

$274

PhiladelphiaMoline

PHL - MLI

PHLMLI

Philadelphia

mer. 2/11

1:10 pm-4:54 pm

1 stop4h 44m

Moline Quad-City

dim. 2/15

5:22 pm-10:51 pm

1 stop4h 29m

$279

PhiladelphiaMoline

PHL - MLI

PHLMLI

Philadelphia

mer. 2/18

12:55 pm-7:02 pm

1 stop7h 07m

Moline Quad-City

sam. 2/21

3:52 pm-9:09 pm

1 stop4h 17m

$321

PhiladelphiaEvansville

PHL - EVV

PHLEVV

Philadelphia

lun. 3/30

10:41 am-3:49 pm

1 stop6h 08m

Evansville Dress Regional

mar. 4/7

5:00 am-11:46 am

1 stop5h 46m

$403

PhiladelphiaEvansville

PHL - EVV

PHLEVV

Philadelphia

ven. 3/13

12:21 pm-3:49 pm

1 stop4h 28m

Evansville Dress Regional

dim. 3/15

4:20 pm-11:54 pm

1 stop6h 34m

$413

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Illinois from

How to get the cheapest flight ticket from Philadelphia to Illinois

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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Philadelphia is in September. Flight prices, which tend to average around $193, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $207.

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

The cheapest day to depart from Philadelphia to Illinois is on a Friday when prices can be found for as low as $316. Flights from Philadelphia to Illinois on a Sunday will generally be more expensive and average around $489. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Philadelphia to Illinois during this time can be as low as $271. Flights at noon are often more expensive with an average ticket price of $417.

What is the cheapest Philadelphia to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $286 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Philadelphia for as low as $222 on momondo.

What cabin class options are available on Philadelphia to Illinois flights?

There are 4 cabin classes available to choose from on Philadelphia to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to Illinois flights?

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

Cheap Philadelphia to Illinois flight deals and tips

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

Best Price Found

$171

Fastest flight time

2h 00m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Philadelphia in the past 72 hours is $171. The best round-trip flight deal from Philadelphia to Illinois found on momondo in the last 72 hours is $333.
The fastest flight from Philadelphia to Illinois takes 2h 00m
Direct flights go from Philadelphia to Illinois every day.
There are 98 airports in Illinois. From Philadelphia there are direct flights to Chicago Midway (MDW).
Search flight deals

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

    Prices for flights from Philadelphia Airport to Illinois are updated daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Philadelphia Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Philadelphia to Illinois?

Best airlines flying from Philadelphia to Illinois

Compare and see reviews for airlines that fly from Philadelphia to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $74Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
DeltaPriceFrom $98Free CancellationRating
7.9
8,128 reviews
Search Delta flights
United AirlinesPriceFrom $153Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
SouthwestPriceFrom $160Free CancellationRating
8.0
4,267 reviews
Search Southwest flights
American AirlinesPriceFrom $163Free CancellationRating
7.2
11,205 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Philadelphia to Illinois. momondo saves you time and could save you money on your trip.

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

All flight searches from Philadelphia to Illinois on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Philadelphia to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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

An easier way to manage your Illinois trip

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1 adult
sam. 2/28
sam. 3/7
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