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Cheap flights from Illinois to Pennsylvania from $47

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Pennsylvania departing on 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Pennsylvania

Cheap round-trip flights

Enter your travel dates to find the best prices.
Spirit Airlines Logo
4:38 pm - 7:42 pm
ORD
-
LGA
2h 04mnonstop
Spirit Airlines Logo
7:30 am - 9:12 am
LGA
-
ORD
2h 42mnonstop
$77Spirit Airlines
Wed, Jan 7 - Tue, Jan 13
Frontier Logo
12:05 pm - 3:29 pm
ORD
-
JFK
2h 24mnonstop
Frontier Logo
4:29 pm - 6:29 pm
JFK
-
ORD
3h 00mnonstop
$77Frontier
Thu, Jan 22 - Sun, Jan 25
Frontier Logo
11:55 am - 3:19 pm
ORD
-
JFK
2h 24mnonstop
Frontier Logo
11:03 am - 1:03 pm
JFK
-
ORD
3h 00mnonstop
$78Frontier
Sun, Feb 8 - Sun, Feb 15
Multiple Airlines Logo
4:38 pm - 7:46 pm
ORD
-
EWR
2h 08mnonstop
Multiple Airlines Logo
11:30 am - 4:52 pm
EWR
-
ORD
6h 22m1 stop
$105Multiple Airlines
Sat, Jan 10 - Tue, Jan 13
Multiple Airlines Logo
4:46 pm - 1:10 am
ORD
-
EWR
7h 24m1 stop
Multiple Airlines Logo
9:05 pm - 10:42 pm
EWR
-
ORD
2h 37mnonstop
$108Multiple Airlines
Sat, Jan 10 - Fri, Jan 16
Southwest Logo
7:15 pm - 10:20 pm
MDW
-
LGA
2h 05mnonstop
Southwest Logo
9:00 am - 10:40 am
LGA
-
MDW
2h 40mnonstop
$139Southwest
Fri, Jan 23 - Sun, Jan 25
Southwest Logo
7:15 pm - 10:20 pm
MDW
-
LGA
2h 05mnonstop
Southwest Logo
6:00 am - 7:40 am
LGA
-
MDW
2h 40mnonstop
$148Southwest
Tue, Jan 13 - Tue, Jan 20
United Airlines Logo
7:45 am - 1:03 pm
STL
-
LGA
4h 18m1 stop
United Airlines Logo
10:00 am - 2:27 pm
LGA
-
STL
5h 27m1 stop
$261United Airlines
Wed, Apr 15 - Tue, Apr 21
Delta Logo
1:10 pm - 4:32 pm
STL
-
LGA
2h 22mnonstop
Delta Logo
6:55 am - 8:57 am
LGA
-
STL
3h 02mnonstop
$267Delta
Thu, Feb 12 - Tue, Feb 17
Delta Logo
5:32 pm - 9:00 pm
STL
-
LGA
2h 28mnonstop
Delta Logo
2:40 pm - 4:39 pm
LGA
-
STL
2h 59mnonstop
$273Delta
Tue, Jan 6 - Tue, Jan 13

Frontier flights from Illinois to Pennsylvania

Our best Frontier deals on Illinois to Pennsylvania flight tickets
Frontier
Jan 22
ORD12:05 pmChicago O'Hare Intl
2h 24m
JFK3:29 pmNew York John F Kennedy Intl
Jan 25
JFK4:29 pmNew York John F Kennedy Intl
3h 00m
ORD6:29 pmChicago O'Hare Intl
$77
Find similar
Frontier
Feb 8
ORD11:55 amChicago O'Hare Intl
2h 24m
JFK3:19 pmNew York John F Kennedy Intl
Feb 15
JFK11:03 amNew York John F Kennedy Intl
3h 00m
ORD1:03 pmChicago O'Hare Intl
$78
Find similar
Frontier
Jan 9
ORD8:35 amChicago O'Hare Intl
2h 24m
JFK11:59 amNew York John F Kennedy Intl
Jan 12
JFK1:00 pmNew York John F Kennedy Intl
2h 57m
ORD2:57 pmChicago O'Hare Intl
$79
Find similar

JetBlue flights from Illinois to Pennsylvania

Our best JetBlue deals on Illinois to Pennsylvania flight tickets
JetBlue
Jan 6
ORD10:55 amChicago O'Hare Intl
6h 28m
1 stop
PHL6:23 pmPhiladelphia
Jan 9
PHL1:30 pmPhiladelphia
5h 13m
1 stop
ORD5:43 pmChicago O'Hare Intl
$151
Find similar
JetBlue
Feb 5
ORD7:45 amChicago O'Hare Intl
7h 34m
1 stop
DCA4:19 pmWashington, D.C. Reagan-National
Feb 9
DCA1:00 pmWashington, D.C. Reagan-National
5h 44m
1 stop
ORD5:44 pmChicago O'Hare Intl
$166
Find similar
JetBlue
Jan 8
ORD7:45 amChicago O'Hare Intl
7h 34m
1 stop
DCA4:19 pmWashington, D.C. Reagan-National
Jan 12
DCA1:00 pmWashington, D.C. Reagan-National
5h 43m
1 stop
ORD5:43 pmChicago O'Hare Intl
$168
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Pennsylvania 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 December 18, 2025.
Use the filters below to find and compare flights from Illinois to Pennsylvania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Wed 1/7

4:38 pm-7:42 pm

Nonstop2h 04m

New York LaGuardia

Tue 1/13

7:30 am-9:12 am

Nonstop2h 42m

$77

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Thu 1/22

12:05 pm-3:29 pm

Nonstop2h 24m

New York John F Kennedy Intl

Sun 1/25

4:29 pm-6:29 pm

Nonstop3h 00m

$77

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Sun 2/8

11:55 am-3:19 pm

Nonstop2h 24m

New York John F Kennedy Intl

Sun 2/15

11:03 am-1:03 pm

Nonstop3h 00m

$78

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Sat 1/10

4:38 pm-7:46 pm

Nonstop2h 08m

Newark

Tue 1/13

11:30 am-4:52 pm

1 stop6h 22m

$105

ChicagoNewark

ORD - EWR

ORDEWR

Chicago O'Hare Intl

Sat 1/10

4:46 pm-1:10 am

1 stop7h 24m

Newark

Fri 1/16

9:05 pm-10:42 pm

Nonstop2h 37m

$108

ChicagoNew York

MDW - LGA

MDWLGA

Chicago Midway

Fri 1/23

7:15 pm-10:20 pm

Nonstop2h 05m

New York LaGuardia

Sun 1/25

9:00 am-10:40 am

Nonstop2h 40m

$139

ChicagoNew York

MDW - LGA

MDWLGA

Chicago Midway

Tue 1/13

7:15 pm-10:20 pm

Nonstop2h 05m

New York LaGuardia

Tue 1/20

6:00 am-7:40 am

Nonstop2h 40m

$148

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Wed 4/15

7:45 am-1:03 pm

1 stop4h 18m

New York LaGuardia

Tue 4/21

10:00 am-2:27 pm

1 stop5h 27m

$261

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Thu 2/12

1:10 pm-4:32 pm

Nonstop2h 22m

New York LaGuardia

Tue 2/17

6:55 am-8:57 am

Nonstop3h 02m

$267

St. LouisNew York

STL - LGA

STLLGA

Lambert-St Louis

Tue 1/6

5:32 pm-9:00 pm

Nonstop2h 28m

New York LaGuardia

Tue 1/13

2:40 pm-4:39 pm

Nonstop2h 59m

$273

Flights are sorted by cheapest round-trip flights first.

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

How to get the cheapest flight ticket from Illinois to Pennsylvania

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 Pennsylvania?

The month of October is, on average, the cheapest month to fly to Pennsylvania from Illinois, with most prices found around $188. If you don’t want to visit Pennsylvania in October, then you should wait until August to fly from Illinois, when ticket prices are also cheap, with an average price of $215.

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

The cheapest day to depart on your flight to Pennsylvania is on a Thursday when prices can be found for as low as $285. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $441. These prices are subject to change though, so be sure to set up a Price Alert for flights to Pennsylvania.

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

Our most recent data shows that the best time of day to fly to Pennsylvania is in the evening. Flights from Illinois to Pennsylvania during this time can be as low as $265. In contrast, the most expensive time of day to depart to Pennsylvania is in the afternoon when prices are around $523.

What is the cheapest Illinois to Pennsylvania flight route?

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

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

You are more likely to see cheaper flights to Pennsylvania from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $280 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from Illinois for as low as $211 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Pennsylvania 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 Illinois to Pennsylvania flights?

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

Cheap Illinois to Pennsylvania flight deals and tips

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

Best Price Found

$119

Fastest flight time

1h 20m

Direct flights

Every day

Airports in Pennsylvania

152 airports
The best one-way flight to Pennsylvania from Illinois in the past 72 hours is $119. The best round-trip flight deal from Illinois to Pennsylvania found on momondo in the last 72 hours is $192.
The fastest flight from Illinois to Pennsylvania takes 1h 20m
Direct flights go from Illinois to Pennsylvania every day.
There are 152 airports in Pennsylvania. From Illinois there are direct flights to Washington, D.C. Reagan-National (DCA), Philadelphia (PHL), Washington, D.C. Dulles Intl (IAD).
Search flight deals

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

    Prices for flights from Illinois to Pennsylvania were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Pennsylvania.

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

    The travel and health documents you'll need for your trip to Pennsylvania may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Pennsylvania. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Illinois to Pennsylvania

Compare and see reviews for airlines that fly from Illinois to Pennsylvania with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $63Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
FrontierPriceFrom $67Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
American AirlinesPriceFrom $98Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
SouthwestPriceFrom $103Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
DeltaPriceFrom $108Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $111Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights

Why use momondo?

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

Finding the right flight to Pennsylvania from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Pennsylvania quick and easy, saving you time and money.

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

Yes. All flights to Pennsylvania from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Illinois to Pennsylvania 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 Illinois to Pennsylvania right now. Can momondo alert me if prices change?

Price alerts on flights to Pennsylvania from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Pennsylvania trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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