What is the cheapest airline that flies from North America to Illinois?

United Airlines, Delta, and Frontier are the most popular carriers operating from North America to Illinois

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

3,231 flights are operational weekly from North America to Illinois as of August 2026. The most popular departure day for this route is Wed, with 21% of flights per week taking off on this day.

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

As of August 2026, there are 461 flights per day flying from North America to Illinois. The most common time of day flights depart is 8:00AM, with 40% of flights taking off at noon.

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from North America according to our data. United Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 12 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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?

There are 8 operators available for flights from North America to Illinois as of August 2026.

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.

$89 Cheap Flights from North America to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from North America to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:29 pm - 7:35 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

7h 06m1 stop Dallas/Fort Worth

4:30 pm - 7:46 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 16mnonstop

$177Frontier

Fri, Sep 11 - Sat, Sep 12

10:22 am - 6:23 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

9h 01m1 stop Atlanta Hartsfield-Jackson

12:56 pm - 4:08 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 12mnonstop

$177Frontier

Sat, Sep 12 - Sat, Sep 19

12:10 pm - 1:30 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 20mnonstop

2:30 pm - 5:43 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 13mnonstop

$177United Airlines

Sat, Sep 26 - Tue, Sep 29

12:10 pm - 1:31 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 21mnonstop

7:30 am - 10:30 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 00mnonstop

$177United Airlines

Wed, Sep 16 - Sat, Sep 19

6:01 am - 7:30 amBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 29mnonstop

6:58 am - 10:07 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 09mnonstop

$177American Airlines

Wed, Sep 16 - Sat, Sep 19

11:40 am - 12:59 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 19mnonstop

9:12 pm - 12:16 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 04mnonstop

$177American Airlines

Sat, Jan 23 - Wed, Jan 27

6:55 am - 8:49 amBOS Boston Logan Intl-ORD Chicago O'Hare Intl

2h 54mnonstop

8:04 pm - 11:59 pmORD Chicago O'Hare Intl-BOS Boston Logan Intl

2h 55mnonstop

$184JetBlue

Tue, Oct 6 - Thu, Oct 8

6:55 am - 11:24 amBOS Boston Logan Intl-ORD Chicago O'Hare Intl

5h 29m1 stop New York John F Kennedy Intl

9:38 am - 1:06 pmORD Chicago O'Hare Intl-BOS Boston Logan Intl

2h 28mnonstop

$193JetBlue

Sun, Oct 18 - Thu, Oct 22

11:10 am - 4:59 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

6h 49m1 stop New York John F Kennedy Intl

5:10 pm - 11:02 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

4h 52m1 stop Detroit Metropolitan Wayne County

$194Delta

Tue, Sep 22 - Wed, Sep 23

8:25 am - 1:39 pmDCA Washington, D.C. Reagan-National-ORD Chicago O'Hare Intl

6h 14m1 stop New York LaGuardia

5:29 pm - 11:07 pmORD Chicago O'Hare Intl-DCA Washington, D.C. Reagan-National

4h 38m1 stop Detroit Metropolitan Wayne County

$197Delta

Sat, Oct 17 - Mon, Oct 19

Cheap last minute flights

Enter your travel dates to find the best prices.

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

9:20 pm - 12:04 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 44mnonstop

$202Frontier

Tue, Sep 1 - Sat, Sep 5

11:59 pm - 6:17 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

9:20 pm - 12:04 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 44mnonstop

$205Frontier

Fri, Aug 28 - Sat, Aug 29

11:41 pm - 5:59 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

3:43 pm - 10:59 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

9h 16m1 stop Seattle/Tacoma Intl

$238Multiple Airlines

Sat, Aug 29 - Tue, Sep 1

11:41 pm - 5:59 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 18mnonstop

3:43 pm - 10:59 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

9h 16m1 stop Seattle/Tacoma Intl

$243Multiple Airlines

Sat, Aug 29 - Tue, Sep 1

11:30 pm - 5:41 amLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 11mnonstop

2:00 pm - 4:32 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 32mnonstop

$257United Airlines

Tue, Sep 1 - Wed, Sep 30

6:00 am - 12:23 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 23mnonstop

12:05 pm - 2:29 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 24mnonstop

$257American Airlines

Tue, Sep 1 - Wed, Sep 30

5:09 pm - 11:30 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 21mnonstop

9:10 pm - 11:36 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 26mnonstop

$257American Airlines

Tue, Sep 1 - Thu, Oct 1

8:00 pm - 9:58 pmJFK New York John F Kennedy Intl-ORD Chicago O'Hare Intl

2h 58mnonstop

6:00 am - 2:07 pmORD Chicago O'Hare Intl-JFK New York John F Kennedy Intl

7h 07m1 stop Fort Lauderdale

$260JetBlue

Tue, Sep 1 - Sun, Sep 20

7:20 am - 9:00 amLGA New York LaGuardia-ORD Chicago O'Hare Intl

2h 40mnonstop

5:03 pm - 8:25 pmORD Chicago O'Hare Intl-LGA New York LaGuardia

2h 22mnonstop

$266United Airlines

Tue, Sep 1 - Tue, Sep 22

6:55 am - 8:43 amJFK New York John F Kennedy Intl-ORD Chicago O'Hare Intl

2h 48mnonstop

7:00 am - 10:27 amORD Chicago O'Hare Intl-JFK New York John F Kennedy Intl

2h 27mnonstop

$266JetBlue

Tue, Sep 1 - Sat, Sep 12

Cheap direct flights

Enter your travel dates to find the best prices.

8:45 pm - 10:02 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 17mnonstop

6:20 am - 9:25 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 05mnonstop

$177Frontier

Sat, Sep 12 - Fri, Sep 18

6:01 am - 7:30 amBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 29mnonstop

6:58 am - 10:07 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 09mnonstop

$177American Airlines

Wed, Sep 16 - Sat, Sep 19

12:10 pm - 1:30 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 20mnonstop

2:30 pm - 5:43 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 13mnonstop

$177United Airlines

Sat, Sep 26 - Tue, Sep 29

5:29 pm - 6:49 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 20mnonstop

7:45 pm - 10:59 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 14mnonstop

$177United Airlines

Tue, Oct 6 - Thu, Oct 8

11:40 am - 12:59 pmBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 19mnonstop

9:12 pm - 12:16 amORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 04mnonstop

$177American Airlines

Sat, Jan 23 - Wed, Jan 27

10:20 am - 11:40 amBWI Baltimore/Washington-ORD Chicago O'Hare Intl

2h 20mnonstop

4:30 pm - 7:46 pmORD Chicago O'Hare Intl-BWI Baltimore/Washington

2h 16mnonstop

$178Frontier

Fri, Sep 11 - Sat, Sep 12

6:55 am - 8:49 amBOS Boston Logan Intl-ORD Chicago O'Hare Intl

2h 54mnonstop

8:04 pm - 11:59 pmORD Chicago O'Hare Intl-BOS Boston Logan Intl

2h 55mnonstop

$184JetBlue

Tue, Oct 6 - Thu, Oct 8

5:00 pm - 7:01 pmBOS Boston Logan Intl-ORD Chicago O'Hare Intl

3h 01mnonstop

8:24 pm - 12:09 amORD Chicago O'Hare Intl-BOS Boston Logan Intl

2h 45mnonstop

$197JetBlue

Thu, Sep 17 - Mon, Sep 21

9:45 am - 3:51 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

4h 06mnonstop

2:50 pm - 5:15 pmORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 25mnonstop

$217Delta

Sat, Sep 26 - Wed, Sep 30

5:52 pm - 11:47 pmLAX Los Angeles Los Angeles-ORD Chicago O'Hare Intl

3h 55mnonstop

9:30 am - 11:58 amORD Chicago O'Hare Intl-LAX Los Angeles Los Angeles

4h 28mnonstop

$217Delta

Wed, Oct 28 - Tue, Nov 3

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American Airlines flights from North America to Illinois

Our best American Airlines deals on North America to Illinois flight tickets

American Airlines

Sep 17

DCA3:58 pmWashington, D.C. Reagan-National

2h 30m

ORD5:28 pmChicago O'Hare Intl

Sep 21

ORD8:55 pmChicago O'Hare Intl

2h 04m

DCA11:59 pmWashington, D.C. Reagan-National

$178

American Airlines

Oct 10

DCA1:06 pmWashington, D.C. Reagan-National

2h 23m

ORD2:29 pmChicago O'Hare Intl

Oct 17

ORD8:58 pmChicago O'Hare Intl

2h 01m

DCA11:59 pmWashington, D.C. Reagan-National

$179

American Airlines

Nov 6

DCA7:50 amWashington, D.C. Reagan-National

2h 26m

ORD9:16 amChicago O'Hare Intl

Nov 9

ORD9:50 amChicago O'Hare Intl

2h 05m

DCA12:55 pmWashington, D.C. Reagan-National

$217

Frontier flights from North America to Illinois

Our best Frontier deals on North America to Illinois flight tickets

Frontier

Sep 7

BWI7:18 pmBaltimore/Washington

29h 09m

1 stop

ORD11:27 pmChicago O'Hare Intl

Sep 14

ORD6:20 amChicago O'Hare Intl

2h 05m

BWI9:25 amBaltimore/Washington

$177

Frontier

Sep 16

IAD3:15 pmWashington, D.C. Dulles Intl

2h 14m

ORD4:29 pmChicago O'Hare Intl

Sep 19

ORD7:32 pmChicago O'Hare Intl

9h 48m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

$178

Frontier

Oct 14

BWI12:03 pmBaltimore/Washington

8h 04m

1 stop

ORD7:07 pmChicago O'Hare Intl

Oct 20

ORD7:40 amChicago O'Hare Intl

11h 37m

1 stop

BWI8:17 pmBaltimore/Washington

$179

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Fri 9/11

1:29 pm-7:35 pm

1 stop7h 06m

Chicago O'Hare Intl

Sat 9/12

4:30 pm-7:46 pm

Nonstop2h 16m

$177

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Sat 9/12

10:22 am-6:23 pm

1 stop9h 01m

Chicago O'Hare Intl

Sat 9/19

12:56 pm-4:08 pm

Nonstop2h 12m

$177

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Sat 9/26

12:10 pm-1:30 pm

Nonstop2h 20m

Chicago O'Hare Intl

Tue 9/29

2:30 pm-5:43 pm

Nonstop2h 13m

$177

Quickest round-trip

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Wed 9/16

12:10 pm-1:31 pm

Nonstop2h 21m

Chicago O'Hare Intl

Sat 9/19

7:30 am-10:30 am

Nonstop2h 00m

$177

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Wed 9/16

6:01 am-7:30 am

Nonstop2h 29m

Chicago O'Hare Intl

Sat 9/19

6:58 am-10:07 am

Nonstop2h 09m

$177

BaltimoreChicago

BWI Baltimore/Washington - ORD Chicago O'Hare Intl

BWIORD

Baltimore/Washington

Sat 1/23

11:40 am-12:59 pm

Nonstop2h 19m

Chicago O'Hare Intl

Wed 1/27

9:12 pm-12:16 am

Nonstop2h 04m

$177

BostonChicago

BOS Boston Logan Intl - ORD Chicago O'Hare Intl

BOSORD

Boston Logan Intl

Tue 10/6

6:55 am-8:49 am

Nonstop2h 54m

Chicago O'Hare Intl

Thu 10/8

8:04 pm-11:59 pm

Nonstop2h 55m

$184

BostonChicago

BOS Boston Logan Intl - ORD Chicago O'Hare Intl

BOSORD

Boston Logan Intl

Sun 10/18

6:55 am-11:24 am

1 stop5h 29m

Chicago O'Hare Intl

Thu 10/22

9:38 am-1:06 pm

Nonstop2h 28m

$193

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Tue 9/22

11:10 am-4:59 pm

1 stop6h 49m

Chicago O'Hare Intl

Wed 9/23

5:10 pm-11:02 pm

1 stop4h 52m

$194

Washington, D.C.Chicago

DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl

DCAORD

Washington, D.C. Reagan-National

Sat 10/17

8:25 am-1:39 pm

1 stop6h 14m

Chicago O'Hare Intl

Mon 10/19

5:29 pm-11:07 pm

1 stop4h 38m

$197

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 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

Prices

Airlines

Other information

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 $264, 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 February is also cheap. Prices for this month can be found on momondo for an average of $274.

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 Wednesday when prices can be found for as low as $402. Flights from North America to Illinois on a Sunday will generally be more expensive and average around $501. 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 $361. Flights at noon are often more expensive with an average ticket price of $515.

What is the cheapest North America to Illinois flight route?

Fly from Atlanta Hartsfield-Jackson to Chicago Midway for the best North America - Illinois flight prices

How far in advance should I book a flight from North America 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 $241 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 $174 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	$89
Fastest flight time	0h 45m
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 $89. The best round-trip flight deal from North America to Illinois found on momondo in the last 72 hours is $177.

The fastest flight from North America to Illinois takes 0h 45m

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

Frequently asked questions about flying from North America to Illinois

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?
There are 8 operators available for flights from North America to Illinois as of August 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from North America to Illinois is Boeing 737-800 (20.58% of total bookings). The next most popular plane models are Airbus A321neo (13.83%), Boeing 737-900 (9.56%), and Boeing 737 MAX 8 (8.05%).

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
Frontier	PriceFrom $44	Free Cancellation	Rating 5.6 2,646 reviews	Search Frontier flights
JetBlue	PriceFrom $72	Free Cancellation	Rating 7.1 3,036 reviews	Search JetBlue flights
Delta	PriceFrom $74	Free Cancellation	Rating 7.8 8,532 reviews	Search Delta flights
Allegiant Air	PriceFrom $110	Free Cancellation	Rating 7.3 675 reviews	Search Allegiant Air flights
Breeze Airways	PriceFrom $128	Free Cancellation	Rating 8.2 312 reviews	Search Breeze Airways flights
United Airlines	PriceFrom $129	Free Cancellation	Rating 7.4 10,128 reviews	Search United Airlines flights
Southwest	PriceFrom $137	Free Cancellation	Rating 8.0 4,204 reviews	Search Southwest flights
American Airlines	PriceFrom $138	Free Cancellation	Rating 7.1 12,003 reviews	Search American Airlines flights
Volaris	PriceFrom $185	Free Cancellation	Rating 6.6 1,144 reviews	Search Volaris flights
Alaska Airlines	PriceFrom $195	Free Cancellation	Rating 7.9 12,845 reviews	Search Alaska 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.

Start using Trips

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Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Sat 9/26

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Find better results for your trip to Illinois

Popular cities

Other flights from North America

Other flights to Illinois

Airlines

Complete your trip

Feeling lucky

Popular cities in Illinois

Flights to New Yorkfrom $75

Flights to Los Angelesfrom $39

Flights to Orlandofrom $55

Flights to Miamifrom $79

Flights to San Franciscofrom $39

Flights to Chicagofrom $50

Flights to Las Vegasfrom $39

Flights to Washington, D.C.from $67

Flights to Bostonfrom $88

Flights to Fort Lauderdalefrom $63

Flights to Atlantafrom $38

Flights to Dallasfrom $55

Cheap flights from North America to Illinois from $89

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 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from North America to Illinois

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

American Airlines flights from North America to Illinois

Our best American Airlines deals on North America to Illinois flight tickets

Frontier flights from North America to Illinois

Our best Frontier deals on North America to Illinois flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from North America to Illinois that are best for you.

See travel insights to Illinois from

How to get the cheapest flight ticket from North America to Illinois

What is the cheapest month to fly to Illinois?

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

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

What is the cheapest North America to Illinois flight route?

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

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

Can stopping save me money on North America to Illinois flights?

What is the cheapest airline that flies from North America to Illinois?

What airlines fly to Illinois?

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

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

Cheap North America to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo

North America flight routes

According to popular flight searches on momondo this year

Illinois flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Illinois

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Illinois

Explore popular destinations other users love

According to popular flight searches on momondo this year