How long is the flight from United States to Illinois?

The flight from United States to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from New York (a popular airport in United States) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 2h 46m on average. If you fly from Boston (another popular airport in United States) to Chicago O'Hare Intl Airport, then the average flight time is 2h 52m.

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from United States according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 11 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from United States to Illinois?

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

How many flights depart from United States to Illinois on average per day?

As of October 2026, 400 flights take off from United States and land in Illinois each day. The most common flight departure time for this route is 10:00AM, with 38% of daily flights taking off in the afternoon.

How many flights depart from United States to Illinois on average per week?

The number of flights available between United States and Illinois is 2,806 per week as of October 2026. The most frequent departure day is Wed, with 25% of weekly flights leaving on this day.

When did momondo last update prices for flights from United States to Illinois?

Prices for flights from United States to Illinois refresh daily.

How many operators does momondo search for flights from United States to Illinois?

As of October 2026, there are 8 operators available to choose from for flights from United States to Illinois.

How old do you have to be to fly from United States to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$77 Cheap Flights from the United States to Illinois in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from the United States to Illinois

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from the United States to Illinois

Enter your travel dates to find the best prices.

12:34 pm - 12:43 amATL Atlanta Hartsfield-Jackson-ORD Chicago O'Hare Intl

13h 09m1 stop Tampa

7:49 am - 11:14 amORD Chicago O'Hare Intl-ATL Atlanta Hartsfield-Jackson

2h 25mnonstop

$140Frontier

Wed, Nov 25 - Mon, Nov 30

10:07 am - 5:07 pmATL Atlanta Hartsfield-Jackson-ORD Chicago O'Hare Intl

8h 00m1 stop Orlando

6:00 am - 11:02 pmORD Chicago O'Hare Intl-ATL Atlanta Hartsfield-Jackson

16h 02m1 stop Baltimore/Washington

$140Frontier

Wed, Nov 11 - Fri, Nov 13

12:44 pm - 7:59 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

8h 15m1 stop Houston George Bush Intcntl

2:59 pm - 7:10 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 11mnonstop

$148Multiple Airlines

Fri, Nov 13 - Mon, Nov 16

10:22 am - 11:23 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

26h 01m1 stop Baltimore/Washington

2:59 pm - 7:10 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 11mnonstop

$148Multiple Airlines

Wed, Nov 4 - Tue, Nov 10

8:26 am - 11:00 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 34mnonstop

8:15 pm - 12:21 amORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 06mnonstop

$150American Airlines

Thu, Feb 25 - Sun, Feb 28

5:30 pm - 7:57 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 27mnonstop

6:19 pm - 10:29 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$151United Airlines

Wed, Apr 7 - Sat, Apr 17

7:00 am - 9:30 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 30mnonstop

10:55 am - 3:08 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 13mnonstop

$152United Airlines

Mon, Dec 7 - Tue, Dec 8

1:33 pm - 4:04 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 31mnonstop

7:23 pm - 11:26 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 03mnonstop

$152American Airlines

Wed, Nov 4 - Tue, Nov 10

9:15 pm - 11:36 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 21mnonstop

7:00 am - 11:10 amORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$152JetBlue

Fri, Nov 13 - Tue, Nov 17

9:10 pm - 11:33 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 23mnonstop

2:59 pm - 7:10 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 11mnonstop

$152JetBlue

Fri, Dec 4 - Tue, Dec 8

Recent last minute flight deals from the United States to Illinois

Enter your travel dates to find the best prices.

9:58 pm - 9:21 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

12h 23m1 stop Atlanta Hartsfield-Jackson

8:04 am - 12:12 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 08mnonstop

$149Frontier

Sat, Oct 24 - Mon, Oct 26

5:15 pm - 6:45 pmATL Atlanta Hartsfield-Jackson-ORD Chicago O'Hare Intl

2h 30mnonstop

7:35 pm - 10:51 pmORD Chicago O'Hare Intl-ATL Atlanta Hartsfield-Jackson

2h 16mnonstop

$151Frontier

Tue, Oct 27 - Tue, Nov 17

1:07 pm - 3:30 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 23mnonstop

2:42 pm - 6:55 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 13mnonstop

$183Multiple Airlines

Sat, Oct 24 - Tue, Oct 27

9:35 pm - 11:57 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 22mnonstop

8:00 am - 12:10 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$193Multiple Airlines

Mon, Oct 26 - Sat, Oct 31

7:00 am - 9:31 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 31mnonstop

9:00 am - 1:18 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 18mnonstop

$220United Airlines

Tue, Oct 27 - Tue, Nov 3

8:35 am - 11:05 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 30mnonstop

5:05 pm - 9:13 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 08mnonstop

$220American Airlines

Tue, Oct 27 - Tue, Nov 3

9:35 pm - 11:57 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 22mnonstop

7:00 am - 11:10 amORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$229JetBlue

Tue, Oct 27 - Tue, Nov 3

12:25 pm - 6:29 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

7h 04m1 stop Newark

10:52 am - 3:05 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 13mnonstop

$230United Airlines

Tue, Oct 27 - Tue, Nov 3

7:21 am - 10:00 amDFW Dallas/Fort Worth-ORD Chicago O'Hare Intl

2h 39mnonstop

1:15 pm - 6:04 pmORD Chicago O'Hare Intl-DFW Dallas/Fort Worth

4h 49m1 stop Minneapolis St Paul

$243American Airlines

Tue, Oct 27 - Tue, Oct 27

9:35 pm - 11:57 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 22mnonstop

2:42 pm - 6:55 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 13mnonstop

$264JetBlue

Mon, Oct 26 - Wed, Oct 28

Recent direct flight deals from the United States to Illinois

Enter your travel dates to find the best prices.

9:38 pm - 10:53 pmATL Atlanta Hartsfield-Jackson-ORD Chicago O'Hare Intl

2h 15mnonstop

6:19 pm - 9:50 pmORD Chicago O'Hare Intl-ATL Atlanta Hartsfield-Jackson

2h 31mnonstop

$140Frontier

Wed, Dec 23 - Tue, Dec 29

12:25 pm - 1:44 pmATL Atlanta Hartsfield-Jackson-ORD Chicago O'Hare Intl

2h 19mnonstop

7:49 am - 11:14 amORD Chicago O'Hare Intl-ATL Atlanta Hartsfield-Jackson

2h 25mnonstop

$141Frontier

Fri, Nov 20 - Sun, Nov 22

11:15 am - 1:42 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 27mnonstop

7:55 am - 12:02 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 07mnonstop

$149Multiple Airlines

Sat, Nov 7 - Mon, Nov 9

11:15 am - 1:44 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 29mnonstop

7:55 am - 12:02 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 07mnonstop

$149Multiple Airlines

Wed, Nov 4 - Mon, Nov 9

8:26 am - 11:00 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 34mnonstop

8:15 pm - 12:21 amORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 06mnonstop

$150American Airlines

Thu, Feb 25 - Sun, Feb 28

5:30 pm - 7:57 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 27mnonstop

6:19 pm - 10:29 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$151United Airlines

Wed, Apr 7 - Sat, Apr 17

7:00 am - 9:30 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 30mnonstop

10:55 am - 3:08 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 13mnonstop

$152United Airlines

Mon, Dec 7 - Tue, Dec 8

6:27 am - 9:05 amFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 38mnonstop

7:23 pm - 11:26 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 03mnonstop

$152American Airlines

Sat, Nov 7 - Tue, Nov 10

9:15 pm - 11:36 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 21mnonstop

7:00 am - 11:10 amORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 10mnonstop

$152JetBlue

Fri, Nov 13 - Tue, Nov 17

9:10 pm - 11:33 pmFLL Fort Lauderdale-ORD Chicago O'Hare Intl

3h 23mnonstop

2:59 pm - 7:10 pmORD Chicago O'Hare Intl-FLL Fort Lauderdale

3h 11mnonstop

$152JetBlue

Fri, Dec 4 - Sat, Dec 5

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Frontier flights from United States to Illinois

Our best Frontier deals on United States to Illinois flight tickets

Frontier

Nov 11

ATL10:07 amAtlanta Hartsfield-Jackson

8h 00m

1 stop

ORD5:07 pmChicago O'Hare Intl

Nov 13

ORD6:00 amChicago O'Hare Intl

16h 02m

1 stop

ATL11:02 pmAtlanta Hartsfield-Jackson

$140

Frontier

Nov 20

ATL12:25 pmAtlanta Hartsfield-Jackson

2h 19m

ORD1:44 pmChicago O'Hare Intl

Nov 22

ORD7:49 amChicago O'Hare Intl

2h 25m

ATL11:14 amAtlanta Hartsfield-Jackson

$141

Frontier

Nov 5

ATL7:31 amAtlanta Hartsfield-Jackson

9h 06m

1 stop

ORD3:37 pmChicago O'Hare Intl

Nov 9

ORD7:50 pmChicago O'Hare Intl

2h 16m

ATL11:06 pmAtlanta Hartsfield-Jackson

$142

JetBlue flights from United States to Illinois

Our best JetBlue deals on United States to Illinois flight tickets

JetBlue

Nov 21

FLL9:15 pmFort Lauderdale

3h 23m

ORD11:38 pmChicago O'Hare Intl

Dec 5

ORD2:59 pmChicago O'Hare Intl

3h 11m

FLL7:10 pmFort Lauderdale

$176

JetBlue

Nov 25

FLL9:15 pmFort Lauderdale

3h 23m

ORD11:38 pmChicago O'Hare Intl

Nov 30

ORD7:00 amChicago O'Hare Intl

3h 10m

FLL11:10 amFort Lauderdale

$177

JetBlue

Dec 1

FLL9:10 pmFort Lauderdale

3h 23m

ORD11:33 pmChicago O'Hare Intl

Dec 8

ORD2:59 pmChicago O'Hare Intl

3h 11m

FLL7:10 pmFort Lauderdale

$179

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AtlantaChicago

ATL Atlanta Hartsfield-Jackson - ORD Chicago O'Hare Intl

ATLORD

Atlanta Hartsfield-Jackson

Wed 11/25

12:34 pm-12:43 am

1 stop13h 09m

Chicago O'Hare Intl

Mon 11/30

7:49 am-11:14 am

Nonstop2h 25m

$140

AtlantaChicago

ATL Atlanta Hartsfield-Jackson - ORD Chicago O'Hare Intl

ATLORD

Atlanta Hartsfield-Jackson

Wed 11/11

10:07 am-5:07 pm

1 stop8h 00m

Chicago O'Hare Intl

Fri 11/13

6:00 am-11:02 pm

1 stop16h 02m

$140

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Fri 11/13

12:44 pm-7:59 pm

1 stop8h 15m

Chicago O'Hare Intl

Mon 11/16

2:59 pm-7:10 pm

Nonstop3h 11m

$148

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Wed 11/4

10:22 am-11:23 am

1 stop26h 01m

Chicago O'Hare Intl

Tue 11/10

2:59 pm-7:10 pm

Nonstop3h 11m

$148

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Thu 2/25

8:26 am-11:00 am

Nonstop3h 34m

Chicago O'Hare Intl

Sun 2/28

8:15 pm-12:21 am

Nonstop3h 06m

$150

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Wed 4/7

5:30 pm-7:57 pm

Nonstop3h 27m

Chicago O'Hare Intl

Sat 4/17

6:19 pm-10:29 pm

Nonstop3h 10m

$151

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Mon 12/7

7:00 am-9:30 am

Nonstop3h 30m

Chicago O'Hare Intl

Tue 12/8

10:55 am-3:08 pm

Nonstop3h 13m

$152

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Wed 11/4

1:33 pm-4:04 pm

Nonstop3h 31m

Chicago O'Hare Intl

Tue 11/10

7:23 pm-11:26 pm

Nonstop3h 03m

$152

Quickest round-trip

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Fri 11/13

9:15 pm-11:36 pm

Nonstop3h 21m

Chicago O'Hare Intl

Tue 11/17

7:00 am-11:10 am

Nonstop3h 10m

$152

Fort LauderdaleChicago

FLL Fort Lauderdale - ORD Chicago O'Hare Intl

FLLORD

Fort Lauderdale

Fri 12/4

9:10 pm-11:33 pm

Nonstop3h 23m

Chicago O'Hare Intl

Tue 12/8

2:59 pm-7:10 pm

Nonstop3h 11m

$152

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 United States 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 United States 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 $275.

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

The cheapest day to depart from United States to Illinois is on a Wednesday when prices can be found for as low as $408. Flights from United States to Illinois on a Monday will generally be more expensive and average around $516. 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 United States to Illinois during this time can be as low as $380. Flights at noon are often more expensive with an average ticket price of $546.

What is the cheapest United States to Illinois flight route?

Fly from Atlanta Hartsfield-Jackson to Chicago Midway for the best United States - 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 United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $253 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from United States for as low as $177 on momondo.

What cabin class options are available on United States to Illinois flights?

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

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

Cheap United States to Illinois flight deals and tips

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

Best Price Found	$77
Fastest flight time	0h 50m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from United States in the past 72 hours is $77. The best round-trip flight deal from United States to Illinois found on momondo in the last 72 hours is $140.

The fastest flight from United States to Illinois takes 0h 50m

Direct flights go from United States to Illinois every day.

There are 98 airports in Illinois. From United States there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from the United States to Illinois

When did momondo last update prices for flights from United States to Illinois?
Prices for flights from United States to Illinois refresh daily.
How many operators does momondo search for flights from United States to Illinois?
As of October 2026, there are 8 operators available to choose from for flights from United States to Illinois.
How old do you have to be to fly from United States to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from United States to Illinois?
Based on momondo bookings for flights between United States and Illinois, the leading plane model is Boeing 737-800, making up 21.45% of the total bookings. Other popular models include Airbus A321neo with 14.80%, Boeing 737-900 with 10.44%, and Boeing 737 MAX 9 with 6.87%.

Best airlines flying from United States to Illinois

Compare and see reviews for airlines that fly from United States to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $44	Free Cancellation	Rating 5.5 2,519 reviews	Search Frontier flights
JetBlue	PriceFrom $74	Free Cancellation	Rating 7.1 3,059 reviews	Search JetBlue flights
Delta	PriceFrom $74	Free Cancellation	Rating 7.8 8,664 reviews	Search Delta flights
Breeze Airways	PriceFrom $122	Free Cancellation	Rating 8.2 327 reviews	Search Breeze Airways flights
Allegiant Air	PriceFrom $130	Free Cancellation	Rating 7.3 677 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $135	Free Cancellation	Rating 7.3 10,406 reviews	Search United Airlines flights
Southwest	PriceFrom $147	Free Cancellation	Rating 7.9 4,210 reviews	Search Southwest flights
Contour	PriceFrom $147	Free Cancellation	Rating 7.5 43 reviews	Search Contour flights
American Airlines	PriceFrom $150	Free Cancellation	Rating 7.0 12,186 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $204	Free Cancellation	Rating 7.9 13,108 reviews	Search Alaska Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from United States.

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

Yes. momondo allows you to filter the results for United States to Illinois flights to just show those with flexible booking policies.

How can momondo help me find flights from United States to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from United States. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Illinois from United States 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 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

Find my bookings

Get notified when prices go down

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

1 adult

Sat 11/21

Sat 11/28

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Illinois

Popular cities

Other flights from the United States

Other flights to Illinois

Airlines

Complete your trip

Feeling lucky

Popular cities in Illinois

Flights to New Yorkfrom $64

Flights to Los Angelesfrom $38

Flights to Orlandofrom $69

Flights to Miamifrom $50

Flights to San Franciscofrom $47

Flights to Chicagofrom $50

Flights to Las Vegasfrom $43

Flights to Washington, D.C.from $48

Flights to Fort Lauderdalefrom $38

Flights to Bostonfrom $79

Flights to Atlantafrom $42

Flights to Dallasfrom $52

Cheap flights from the United States to Illinois from $77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Illinois departing on 12/25. 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 the United States to Illinois

Recent round-trip flight deals from the United States to Illinois

Recent one-way flight deals from the United States to Illinois

Recent last minute flight deals from the United States to Illinois

Recent direct flight deals from the United States to Illinois

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

Frontier flights from United States to Illinois

Our best Frontier deals on United States to Illinois flight tickets

JetBlue flights from United States to Illinois

Our best JetBlue deals on United States to Illinois flight tickets

momondo Fare Finder

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

See travel insights to Illinois from

How to get the cheapest flight ticket from United States 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 United States to Illinois flight route?

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

What cabin class options are available on United States to Illinois flights?

Can stopping save me money on United States to Illinois flights?

What is the cheapest airline that flies from United States to Illinois?

What airlines fly to Illinois?

How many flights depart from United States to Illinois on average per day?

How many flights depart from United States to Illinois on average per week?

How long is the flight from United States to Illinois?

Cheap United States to Illinois flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from the United States to Illinois

Best airlines flying from United States to Illinois

Compare and see reviews for airlines that fly from United States 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

United States 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