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Cheap flights from North America to Illinois from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to Illinois departing on 3/24. 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 North America to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:24 pm - 12:59 am
DFW
-
ORD
2h 35mnonstop
Frontier Logo
3:23 pm - 6:27 pm
ORD
-
DFW
3h 04mnonstop
$74Frontier
Mon, Apr 20 - Sat, Apr 25
Frontier Logo
9:10 pm - 11:40 pm
DFW
-
ORD
2h 30mnonstop
Frontier Logo
1:39 pm - 4:32 pm
ORD
-
DFW
2h 53mnonstop
$75Frontier
Tue, Apr 7 - Wed, Apr 8
Spirit Airlines Logo
8:42 am - 10:20 am
LGA
-
ORD
2h 38mnonstop
Spirit Airlines Logo
7:31 pm - 10:36 pm
ORD
-
LGA
2h 05mnonstop
$82Spirit Airlines
Tue, Mar 17 - Tue, Mar 24
Spirit Airlines Logo
6:45 am - 9:10 am
DFW
-
ORD
2h 25mnonstop
Spirit Airlines Logo
7:20 pm - 9:58 pm
ORD
-
DFW
2h 38mnonstop
$82Spirit Airlines
Sat, May 16 - Tue, May 19
Delta Logo
11:25 am - 9:34 pm
SEA
-
ORD
8h 09m
1 stop
Delta Logo
7:10 am - 2:20 pm
ORD
-
SEA
9h 10m
1 stop
$181Delta
Sat, Mar 14 - Wed, Mar 18
Delta Logo
11:14 pm - 10:19 am
SEA
-
ORD
9h 05m
1 stop
Delta Logo
12:46 pm - 3:20 pm
ORD
-
SEA
4h 34mnonstop
$182Delta
Wed, Apr 15 - Fri, Apr 17
United Airlines Logo
6:15 am - 7:26 am
IAD
-
ORD
2h 11mnonstop
United Airlines Logo
6:01 pm - 9:04 pm
ORD
-
IAD
2h 03mnonstop
$186United Airlines
Wed, Apr 1 - Fri, Apr 10
United Airlines Logo
10:08 am - 11:26 am
IAD
-
ORD
2h 18mnonstop
United Airlines Logo
12:55 pm - 3:58 pm
ORD
-
IAD
2h 03mnonstop
$194United Airlines
Thu, May 7 - Sat, May 9
American Airlines Logo
5:30 am - 11:58 am
SFO
-
ORD
4h 28mnonstop
American Airlines Logo
9:01 pm - 11:59 pm
ORD
-
SFO
4h 58mnonstop
$232American Airlines
Mon, Apr 27 - Wed, Apr 29
American Airlines Logo
5:30 am - 11:58 am
SFO
-
ORD
4h 28mnonstop
American Airlines Logo
9:40 am - 12:38 pm
ORD
-
SFO
4h 58mnonstop
$234American Airlines
Mon, Apr 27 - Sat, May 2

Frontier flights from North America to Illinois

Our best Frontier deals on North America to Illinois flight tickets
Frontier
Apr 7
DFW9:10 pmDallas/Fort Worth
2h 30m
ORD11:40 pmChicago O'Hare Intl
Apr 8
ORD1:39 pmChicago O'Hare Intl
2h 53m
DFW4:32 pmDallas/Fort Worth
$75
Frontier
Apr 7
DFW10:00 amDallas/Fort Worth
2h 39m
ORD12:39 pmChicago O'Hare Intl
Apr 9
ORD6:00 pmChicago O'Hare Intl
2h 58m
DFW8:58 pmDallas/Fort Worth
$76
Frontier
Apr 8
DFW9:10 pmDallas/Fort Worth
2h 30m
ORD11:40 pmChicago O'Hare Intl
Apr 11
ORD7:15 amChicago O'Hare Intl
2h 58m
DFW10:13 amDallas/Fort Worth
$77

Spirit Airlines flights from North America to Illinois

Our best Spirit Airlines deals on North America to Illinois flight tickets
Spirit Airlines
Mar 17
LGA8:42 amNew York LaGuardia
2h 38m
ORD10:20 amChicago O'Hare Intl
Mar 24
ORD7:31 pmChicago O'Hare Intl
2h 05m
LGA10:36 pmNew York LaGuardia
$82
Spirit Airlines
Mar 24
LGA8:42 amNew York LaGuardia
2h 38m
ORD10:20 amChicago O'Hare Intl
Apr 4
ORD7:31 pmChicago O'Hare Intl
2h 05m
LGA10:36 pmNew York LaGuardia
$83
Spirit Airlines
Mar 20
LGA8:42 amNew York LaGuardia
2h 38m
ORD10:20 amChicago O'Hare Intl
Mar 30
ORD7:31 pmChicago O'Hare Intl
2h 05m
LGA10:36 pmNew York LaGuardia
$84

momondo Fare Finder

 
Customize your flight search to find flights from North America 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 February 27, 2026.
Use the filters below to find and compare flights from North America to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Mon 4/20

10:24 pm-12:59 am

Nonstop2h 35m

Chicago O'Hare Intl

Sat 4/25

3:23 pm-6:27 pm

Nonstop3h 04m

$74

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 4/7

9:10 pm-11:40 pm

Nonstop2h 30m

Chicago O'Hare Intl

Wed 4/8

1:39 pm-4:32 pm

Nonstop2h 53m

$75

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 3/17

8:42 am-10:20 am

Nonstop2h 38m

Chicago O'Hare Intl

Tue 3/24

7:31 pm-10:36 pm

Nonstop2h 05m

$82

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Sat 5/16

6:45 am-9:10 am

Nonstop2h 25m

Chicago O'Hare Intl

Tue 5/19

7:20 pm-9:58 pm

Nonstop2h 38m

$82

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Sat 3/14

11:25 am-9:34 pm

1 stop8h 09m

Chicago O'Hare Intl

Wed 3/18

7:10 am-2:20 pm

1 stop9h 10m

$181

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 4/15

11:14 pm-10:19 am

1 stop9h 05m

Chicago O'Hare Intl

Fri 4/17

12:46 pm-3:20 pm

Nonstop4h 34m

$182

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Wed 4/1

6:15 am-7:26 am

Nonstop2h 11m

Chicago O'Hare Intl

Fri 4/10

6:01 pm-9:04 pm

Nonstop2h 03m

$186

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Thu 5/7

10:08 am-11:26 am

Nonstop2h 18m

Chicago O'Hare Intl

Sat 5/9

12:55 pm-3:58 pm

Nonstop2h 03m

$194

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 4/27

5:30 am-11:58 am

Nonstop4h 28m

Chicago O'Hare Intl

Wed 4/29

9:01 pm-11:59 pm

Nonstop4h 58m

$232

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 4/27

5:30 am-11:58 am

Nonstop4h 28m

Chicago O'Hare Intl

Sat 5/2

9:40 am-12:38 pm

Nonstop4h 58m

$234

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 Illinois from

How to get the cheapest flight ticket from North America 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 North America is in January. Flight prices, which tend to average around $177, 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 January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $211.

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

The cheapest day to depart from North America to Illinois is on a Thursday when prices can be found for as low as $357. Flights from North America to Illinois on a Sunday will generally be more expensive and average around $433. 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 afternoon. Flights from North America to Illinois during this time can be as low as $276. Flights at noon are often more expensive with an average ticket price of $452.

What is the cheapest North America to Illinois flight route?

Fly from Newark to Chicago Midway for the best North America - 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 North America when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $235 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from North America for as low as $182 on momondo.

What cabin class options are available on North America to Illinois flights?

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

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

Cheap North America to Illinois flight deals and tips

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

Best Price Found

$38

Fastest flight time

0h 50m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from North America in the past 72 hours is $38. The best round-trip flight deal from North America to Illinois found on momondo in the last 72 hours is $56.
The fastest flight from North America to Illinois takes 0h 50m
Direct flights go from North America to Illinois every day.
There are 98 airports in Illinois. From North America there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

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

    Prices for flights from North America to Illinois refresh daily.

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

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

    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 North America to Illinois.

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

    The required travel and health documents for your Illinois 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 Illinois. 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 North America to Illinois?

Best airlines flying from North America to Illinois

Compare and see reviews for airlines that fly from North America to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $43Free CancellationRating
5.7
3,041 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $48Free CancellationRating
6.3
8,494 reviews
Search Spirit Airlines flights
JetBluePriceFrom $66Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
Allegiant AirPriceFrom $68Free CancellationRating
7.2
715 reviews
Search Allegiant Air flights
DeltaPriceFrom $75Free CancellationRating
7.9
8,239 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $101Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
SouthwestPriceFrom $117Free CancellationRating
8.0
4,301 reviews
Search Southwest flights
United AirlinesPriceFrom $117Free CancellationRating
7.4
9,360 reviews
Search United Airlines flights
Breeze AirwaysPriceFrom $121Free CancellationRating
8.1
271 reviews
Search Breeze Airways flights
American AirlinesPriceFrom $127Free CancellationRating
7.1
11,368 reviews
Search American Airlines flights

Why use momondo?

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

Finding the right flight to Illinois from North America 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 Illinois quick and easy, saving you time and money.

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

Flights from North America to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from North America to Illinois?

Once all potential North America 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 North America 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 North America and alert you when they change.

An easier way to manage your Illinois 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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