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

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

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

3,001 flights are operational weekly from North America to Illinois as of January 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

What airlines fly to Illinois?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from North America according to our data. American Airlines is the first choice among our users, with 37% 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.

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

As of January 2026, there are 428 flights per day flying from North America to Illinois. The most common time of day flights depart is 10:00AM, with 43% of flights taking off at noon.

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 11 operators available for flights from North America to Illinois as of January 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.

$50 Cheap Flights from North America to Illinois in 2026

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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.

12:40 pm - 2:07 pm

BWI

ORD

2h 27mnonstop

3:15 pm - 6:24 pm

ORD

BWI

2h 09mnonstop

$76Frontier

lun, feb 9 - gio, feb 12

12:40 pm - 2:07 pm

BWI

ORD

2h 27mnonstop

8:10 am - 11:10 am

ORD

BWI

2h 00mnonstop

$77Frontier

lun, feb 2 - gio, feb 5

12:05 pm - 1:32 pm

BWI

ORD

2h 27mnonstop

8:10 am - 11:10 am

ORD

BWI

2h 00mnonstop

$78Frontier

gio, gen 29 - gio, feb 5

9:05 pm - 10:42 pm

EWR

ORD

2h 37mnonstop

4:38 pm - 7:46 pm

ORD

EWR

2h 08mnonstop

$85Spirit Airlines

sab, feb 7 - dom, feb 8

9:05 pm - 10:42 pm

EWR

ORD

2h 37mnonstop

12:44 pm - 11:27 pm

ORD

EWR

9h 43m

1 stop

$86Spirit Airlines

ven, feb 6 - mer, feb 11

9:30 am - 11:34 am

BOS

ORD

3h 04mnonstop

7:30 am - 10:52 am

ORD

BOS

2h 22mnonstop

$135United Airlines

gio, gen 29 - dom, feb 1

8:25 pm - 10:29 pm

BOS

ORD

3h 04mnonstop

6:59 pm - 10:31 pm

ORD

BOS

2h 32mnonstop

$142Delta

mar, gen 27 - ven, gen 30

5:03 pm - 11:26 pm

SFO

ORD

4h 23mnonstop

6:25 am - 9:30 am

ORD

SFO

5h 05mnonstop

$250United Airlines

sab, feb 14 - dom, feb 22

10:40 pm - 9:10 am

SFO

ORD

8h 30m

1 stop

7:25 am - 4:04 pm

ORD

SFO

10h 39m

1 stop

$252Delta

ven, mar 13 - mar, mar 17

7:15 am - 11:43 pm

SFO

ORD

14h 28m

1 stop

8:50 am - 11:48 pm

ORD

SFO

16h 58m

1 stop

$253Alaska Airlines

gio, apr 30 - mar, mag 5

Frontier flights from North America to Illinois

Our best Frontier deals on North America to Illinois flight tickets

Frontier

Feb 9

BWI12:40 pmBaltimore/Washington

2h 27m

ORD2:07 pmChicago O'Hare Intl

Feb 12

ORD3:15 pmChicago O'Hare Intl

2h 09m

BWI6:24 pmBaltimore/Washington

$76

Frontier

Feb 2

BWI12:40 pmBaltimore/Washington

2h 27m

ORD2:07 pmChicago O'Hare Intl

Feb 5

ORD8:10 amChicago O'Hare Intl

2h 00m

BWI11:10 amBaltimore/Washington

$77

Frontier

Jan 29

BWI12:05 pmBaltimore/Washington

2h 27m

ORD1:32 pmChicago O'Hare Intl

Feb 5

ORD8:10 amChicago O'Hare Intl

2h 00m

BWI11:10 amBaltimore/Washington

$78

Spirit Airlines flights from North America to Illinois

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

Spirit Airlines

Feb 7

EWR9:05 pmNewark

2h 37m

ORD10:42 pmChicago O'Hare Intl

Feb 8

ORD4:38 pmChicago O'Hare Intl

2h 08m

EWR7:46 pmNewark

$85

Spirit Airlines

Feb 6

EWR9:05 pmNewark

2h 37m

ORD10:42 pmChicago O'Hare Intl

Feb 11

ORD12:44 pmChicago O'Hare Intl

9h 43m

1 stop

EWR11:27 pmNewark

$86

Spirit Airlines

Feb 17

EWR11:05 pmNewark

2h 35m

ORD12:40 amChicago O'Hare Intl

Feb 18

ORD6:51 pmChicago O'Hare Intl

2h 09m

EWR10:00 pmNewark

$87

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

lun 2/9

12:40 pm-2:07 pm

Nonstop2h 27m

Chicago O'Hare Intl

gio 2/12

3:15 pm-6:24 pm

Nonstop2h 09m

$76

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

lun 2/2

12:40 pm-2:07 pm

Nonstop2h 27m

Chicago O'Hare Intl

gio 2/5

8:10 am-11:10 am

Nonstop2h 00m

$77

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

gio 1/29

12:05 pm-1:32 pm

Nonstop2h 27m

Chicago O'Hare Intl

gio 2/5

8:10 am-11:10 am

Nonstop2h 00m

$78

NewarkChicago

EWR - ORD

EWRORD

Newark

sab 2/7

9:05 pm-10:42 pm

Nonstop2h 37m

Chicago O'Hare Intl

dom 2/8

4:38 pm-7:46 pm

Nonstop2h 08m

$85

NewarkChicago

EWR - ORD

EWRORD

Newark

ven 2/6

9:05 pm-10:42 pm

Nonstop2h 37m

Chicago O'Hare Intl

mer 2/11

12:44 pm-11:27 pm

1 stop9h 43m

$86

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

gio 1/29

9:30 am-11:34 am

Nonstop3h 04m

Chicago O'Hare Intl

dom 2/1

7:30 am-10:52 am

Nonstop2h 22m

$135

BostonChicago

BOS - ORD

BOSORD

Boston Logan Intl

mar 1/27

8:25 pm-10:29 pm

Nonstop3h 04m

Chicago O'Hare Intl

ven 1/30

6:59 pm-10:31 pm

Nonstop2h 32m

$142

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

sab 2/14

5:03 pm-11:26 pm

Nonstop4h 23m

Chicago O'Hare Intl

dom 2/22

6:25 am-9:30 am

Nonstop5h 05m

$250

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

ven 3/13

10:40 pm-9:10 am

1 stop8h 30m

Chicago O'Hare Intl

mar 3/17

7:25 am-4:04 pm

1 stop10h 39m

$252

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

gio 4/30

7:15 am-11:43 pm

1 stop14h 28m

Chicago O'Hare Intl

mar 5/5

8:50 am-11:48 pm

1 stop16h 58m

$253

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 $182, 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 $189.

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 $430. 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 $273. 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 Orlando 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 $237 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 $168 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	$29
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 $29. The best round-trip flight deal from North America to Illinois found on momondo in the last 72 hours is $68.

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?
There are 11 operators available for flights from North America to Illinois as of January 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 (19.52% of total bookings). The next most popular plane models are Airbus A321neo (12.49%), Boeing 737 MAX 8 (8.58%), and Boeing 737-900 (8.43%).

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 $43	Free Cancellation	Rating 5.7 3,057 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $45	Free Cancellation	Rating 6.3 8,321 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $67	Free Cancellation	Rating 7.2 2,886 reviews	Search JetBlue flights
Allegiant Air	PriceFrom $68	Free Cancellation	Rating 7.2 702 reviews	Search Allegiant Air flights
Delta	PriceFrom $83	Free Cancellation	Rating 7.9 8,050 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $101	Free Cancellation	Rating 7.8 2,827 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,258 reviews	Search Southwest flights
United Airlines	PriceFrom $117	Free Cancellation	Rating 7.4 9,163 reviews	Search United Airlines flights
Breeze Airways	PriceFrom $121	Free Cancellation	Rating 8.1 258 reviews	Search Breeze Airways flights
American Airlines	PriceFrom $128	Free Cancellation	Rating 7.2 11,135 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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dom 2/15

dom 2/22

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Find better results for your trip to Illinois

Popular cities in Illinois

Flights to New Yorkfrom $49

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Flights to Orlandofrom $33

Flights to San Franciscofrom $18

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $58

Flights to Bostonfrom $59

Flights to Atlantafrom $49

Flights to Dallasfrom $50

Flights to Seattlefrom $57

Cheap flights from North America to Illinois from $55

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 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Find the cheapest flights from North America to Illinois

Cheap round-trip flights

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Cheap last minute flights

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Frontier flights from North America to Illinois

Our best Frontier deals on North America to Illinois flight tickets

Spirit Airlines flights from North America to Illinois

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

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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?

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 $273. 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 Orlando to Chicago Midway for the best North America - Illinois flight prices

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

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.

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

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

What airlines fly to Illinois?

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

As of January 2026, there are 428 flights per day flying from North America to Illinois. The most common time of day flights depart is 10:00AM, with 43% of flights taking off at noon.

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

3,001 flights are operational weekly from North America to Illinois as of January 2026. The most popular departure day for this route is Fri, with 18% of flights per week taking off on this day.

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

Fastest flight time

Direct flights

Airports in Illinois

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

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?

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

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

Why use momondo?

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

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

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

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

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