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 43m 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 51m.

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

As of May 2026, 505 flights take off from United States and land in Illinois each day. The most common flight departure time for this route is 8:00AM, with 41% of daily flights taking off at noon.

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

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

What airlines fly to Illinois?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from United States 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 13 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 United States to Illinois on average per week?

The number of flights available between United States and Illinois is 3,540 per week as of May 2026. The most frequent departure day is Sun, with 17% 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 May 2026, there are 10 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.

$54 Cheap Flights from the United States to Illinois in 2026

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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.

8:55 am - 11:40 am

DFW

ORD

2h 45mnonstop

12:40 pm - 3:39 pm

ORD

DFW

2h 59mnonstop

$118Frontier

Wed, May 13 - Tue, May 19

11:55 am - 2:12 pm

DFW

MDW

2h 17mnonstop

3:07 pm - 5:50 pm

MDW

DFW

2h 43mnonstop

$118Frontier

Wed, May 13 - Wed, May 20

9:39 am - 12:09 pm

DFW

ORD

2h 30mnonstop

8:34 pm - 11:07 pm

ORD

DFW

2h 33mnonstop

$121Spirit Airlines

Sat, Aug 22 - Tue, Sep 1

8:47 pm - 10:25 pm

LGA

ORD

2h 38mnonstop

6:10 am - 7:52 pm

ORD

LGA

12h 42m

1 stop

$151Spirit Airlines

Mon, Jun 1 - Thu, Jun 11

3:00 pm - 5:11 pm

JFK

ORD

3h 11mnonstop

6:05 am - 9:26 am

ORD

JFK

2h 21mnonstop

$177Delta

Wed, Jun 24 - Sun, Jul 5

8:10 am - 10:12 am

JFK

ORD

3h 02mnonstop

5:30 pm - 9:00 pm

ORD

JFK

2h 30mnonstop

$179American Airlines

Tue, Aug 25 - Tue, Aug 25

7:11 pm - 8:35 pm

BWI

ORD

2h 24mnonstop

9:25 pm - 12:33 am

ORD

BWI

2h 08mnonstop

$212United Airlines

Sat, May 23 - Tue, May 26

4:24 pm - 9:46 pm

IAD

ORD

6h 22m

1 stop

6:07 am - 12:18 pm

ORD

IAD

5h 11m

1 stop

$228Delta

Sat, May 23 - Tue, May 26

10:15 pm - 11:26 pm

IAD

ORD

2h 11mnonstop

9:40 pm - 12:45 am

ORD

IAD

2h 05mnonstop

$233United Airlines

Wed, Jun 17 - Mon, Jun 22

6:00 am - 12:35 pm

SFO

ORD

4h 35mnonstop

6:45 am - 9:25 am

ORD

SFO

4h 40mnonstop

$282American Airlines

Tue, May 26 - Tue, Jun 2

Spirit Airlines flights from United States to Illinois

Our best Spirit Airlines deals on United States to Illinois flight tickets

Spirit Airlines

Aug 22

DFW9:39 amDallas/Fort Worth

2h 30m

ORD12:09 pmChicago O'Hare Intl

Sep 1

ORD8:34 pmChicago O'Hare Intl

2h 33m

DFW11:07 pmDallas/Fort Worth

$121

Spirit Airlines

May 19

DFW12:38 pmDallas/Fort Worth

2h 25m

ORD3:03 pmChicago O'Hare Intl

May 20

ORD8:00 amChicago O'Hare Intl

2h 32m

DFW10:32 amDallas/Fort Worth

$127

Spirit Airlines

May 13

DFW12:38 pmDallas/Fort Worth

2h 25m

ORD3:03 pmChicago O'Hare Intl

May 14

ORD6:15 amChicago O'Hare Intl

2h 28m

DFW8:43 amDallas/Fort Worth

$128

American Airlines flights from United States to Illinois

Our best American Airlines deals on United States to Illinois flight tickets

American Airlines

Jul 1

EWR5:11 amNewark

2h 48m

ORD6:59 amChicago O'Hare Intl

Jul 7

ORD1:10 pmChicago O'Hare Intl

2h 20m

EWR4:30 pmNewark

$177

American Airlines

Jun 16

EWR5:11 amNewark

2h 48m

ORD6:59 amChicago O'Hare Intl

Jun 23

ORD8:20 pmChicago O'Hare Intl

2h 18m

EWR11:38 pmNewark

$179

American Airlines

Jul 8

EWR5:21 pmNewark

3h 02m

ORD7:23 pmChicago O'Hare Intl

Jul 14

ORD6:42 amChicago O'Hare Intl

2h 18m

EWR10:00 amNewark

$181

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 5/13

8:55 am-11:40 am

Nonstop2h 45m

Chicago O'Hare Intl

Tue 5/19

12:40 pm-3:39 pm

Nonstop2h 59m

$118

DallasChicago

DFW - MDW

DFWMDW

Dallas/Fort Worth

Wed 5/13

11:55 am-2:12 pm

Nonstop2h 17m

Chicago Midway

Wed 5/20

3:07 pm-5:50 pm

Nonstop2h 43m

$118

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Sat 8/22

9:39 am-12:09 pm

Nonstop2h 30m

Chicago O'Hare Intl

Tue 9/1

8:34 pm-11:07 pm

Nonstop2h 33m

$121

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Mon 6/1

8:47 pm-10:25 pm

Nonstop2h 38m

Chicago O'Hare Intl

Thu 6/11

6:10 am-7:52 pm

1 stop12h 42m

$151

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Wed 6/24

3:00 pm-5:11 pm

Nonstop3h 11m

Chicago O'Hare Intl

Sun 7/5

6:05 am-9:26 am

Nonstop2h 21m

$177

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Tue 8/25

8:10 am-10:12 am

Nonstop3h 02m

Chicago O'Hare Intl

Tue 8/25

5:30 pm-9:00 pm

Nonstop2h 30m

$179

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 5/23

7:11 pm-8:35 pm

Nonstop2h 24m

Chicago O'Hare Intl

Tue 5/26

9:25 pm-12:33 am

Nonstop2h 08m

$212

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Sat 5/23

4:24 pm-9:46 pm

1 stop6h 22m

Chicago O'Hare Intl

Tue 5/26

6:07 am-12:18 pm

1 stop5h 11m

$228

Quickest round-trip

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Wed 6/17

10:15 pm-11:26 pm

Nonstop2h 11m

Chicago O'Hare Intl

Mon 6/22

9:40 pm-12:45 am

Nonstop2h 05m

$233

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 5/26

6:00 am-12:35 pm

Nonstop4h 35m

Chicago O'Hare Intl

Tue 6/2

6:45 am-9:25 am

Nonstop4h 40m

$282

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 September. Flight prices, which tend to average around $253, 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 September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $258.

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 Thursday when prices can be found for as low as $368. Flights from United States to Illinois on a Sunday will generally be more expensive and average around $440. 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 $295. Flights at noon are often more expensive with an average ticket price of $476.

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 $239 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 $162 on momondo.

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	$42
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 $42. The best round-trip flight deal from United States to Illinois found on momondo in the last 72 hours is $81.

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 May 2026, there are 10 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 21.99% of the total bookings. Other popular models include Airbus A321neo with 14.26%, Boeing 737-900 with 9.71%, and Boeing 737 MAX 8 with 8.53%.

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 $43	Free Cancellation	Rating 5.6 2,970 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $58	Free Cancellation	Rating 6.3 8,636 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $68	Free Cancellation	Rating 7.1 2,967 reviews	Search JetBlue flights
Delta	PriceFrom $74	Free Cancellation	Rating 7.9 8,460 reviews	Search Delta flights
Allegiant Air	PriceFrom $100	Free Cancellation	Rating 7.3 708 reviews	Search Allegiant Air flights
Hawaiian Airlines	PriceFrom $101	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Contour	PriceFrom $105	Free Cancellation	Rating 7.7 41 reviews	Search Contour flights
United Airlines	PriceFrom $118	Free Cancellation	Rating 7.4 9,683 reviews	Search United Airlines flights
Southwest	PriceFrom $125	Free Cancellation	Rating 8.0 4,312 reviews	Search Southwest flights
American Airlines	PriceFrom $132	Free Cancellation	Rating 7.1 11,674 reviews	Search American 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

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Popular cities in Illinois

Flights to New Yorkfrom $71

Flights to Los Angelesfrom $51

Flights to Orlandofrom $52

Flights to Miamifrom $50

Flights to Chicagofrom $69

Flights to San Franciscofrom $76

Flights to Las Vegasfrom $56

Flights to Washington, D.C.from $55

Flights to Bostonfrom $85

Flights to Atlantafrom $50

Flights to Dallasfrom $76

Flights to Fort Lauderdalefrom $52

Cheap flights from the United States to Illinois from $54

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 6/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Spirit Airlines flights from United States to Illinois

Our best Spirit Airlines deals on United States to Illinois flight tickets

American Airlines flights from United States to Illinois

Our best American Airlines deals on United States to Illinois flight tickets

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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?

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

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

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

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According to popular flight searches on momondo this year

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