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 Los Angeles Los Angeles (a popular airport in United States) to Chicago O'Hare Intl (the most popular airport in Illinois), then the flight time is 4h on average. If you fly from San Francisco (another popular airport in United States) to Chicago O'Hare Intl, then the average flight time is 4h 13m.

$74 Cheap Flights to Illinois in 2026

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Recent flights found to popular cities in Illinois

Find flights to these popular cities in Illinois from your nearest airport.

Flights to Chicago

Search all flight deals to Chicago

Frontier

Sep 16

DFW

2h 34m

ORD

Sep 22

ORD

2h 46m

DFW

$152

Frontier

Aug 4

DFW

2h 21m

MDW

Aug 14

MDW

2h 37m

DFW

$152

Frontier

Aug 4

DFW

2h 43m

ORD

Aug 7

ORD

2h 52m

DFW

$153

Frontier

Aug 4

DFW

2h 21m

MDW

Aug 7

MDW

2h 37m

DFW

$153

Frontier

Aug 23

DFW

2h 51m

ORD

Sep 1

ORD

10h 21m

1 stop

DFW

$154

Frontier

Jul 18

DFW

2h 25m

MDW

Aug 5

MDW

2h 35m

DFW

$154

Frontier

Oct 16

DFW

2h 42m

ORD

Oct 21

ORD

2h 46m

DFW

$155

Frontier

Aug 5

DFW

11h 45m

1 stop

ORD

Aug 6

ORD

2h 52m

DFW

$156

Frontier

Aug 5

DFW

2h 20m

MDW

Aug 6

MDW

2h 32m

DFW

$156

Frontier

Aug 24

DFW

2h 51m

ORD

Sep 23

ORD

2h 39m

DFW

$157

Frontier

Aug 10

DFW

2h 21m

MDW

Aug 17

MDW

2h 37m

DFW

$157

Frontier

Aug 25

DFW

2h 46m

ORD

Aug 29

ORD

2h 41m

DFW

$158

Flights to Moline

Search all flight deals to Moline

Delta

Aug 19

JFK

7h 39m

1 stop

MLI

Aug 26

MLI

7h 05m

1 stop

JFK

$231

Delta

Jul 21

FLL

4h 39m

1 stop

MLI

Jul 28

MLI

6h 34m

1 stop

FLL

$261

Delta

Aug 22

JFK

5h 42m

1 stop

MLI

Aug 26

MLI

7h 05m

1 stop

JFK

$265

United Airlines

Jul 21

FLL

9h 16m

2 stops

MLI

Jul 28

MLI

8h 01m

1 stop

FLL

$266

United Airlines

Sep 25

DEN

2h 18m

MLI

Sep 29

MLI

2h 29m

DEN

$269

American Airlines

Jul 21

FLL

9h 29m

2 stops

MLI

Jul 28

MLI

9h 49m

2 stops

FLL

$271

Multiple Airlines

Aug 26

SEA

14h 03m

1 stop

MLI

Aug 30

MLI

23h 29m

1 stop

SEA

$274

United Airlines

Jul 10

DEN

2h 16m

MLI

Jul 14

MLI

6h 18m

1 stop

DEN

$279

American Airlines

Jul 4

JFK

5h 28m

1 stop

MLI

Jul 11

MLI

7h 22m

1 stop

JFK

$288

American Airlines

Jul 17

DEN

5h 44m

1 stop

MLI

Jul 20

MLI

6h 27m

1 stop

DEN

$289

Delta

Jul 18

FLL

5h 49m

1 stop

MLI

Jul 28

MLI

6h 34m

1 stop

FLL

$290

United Airlines

Aug 5

DEN

2h 16m

MLI

Aug 9

MLI

6h 18m

1 stop

DEN

$291

Flights to Peoria, Illinois

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Allegiant Air

Aug 13

DEN

2h 10m

PIA

Aug 16

PIA

2h 25m

DEN

$178

Allegiant Air

Sep 20

DEN

2h 03m

PIA

Sep 27

PIA

2h 20m

DEN

$184

Allegiant Air

Sep 24

DEN

2h 03m

PIA

Oct 1

PIA

2h 20m

DEN

$185

Allegiant Air

Sep 24

DEN

2h 03m

PIA

Sep 27

PIA

2h 20m

DEN

$191

Allegiant Air

Jul 23

DEN

2h 10m

PIA

Jul 30

PIA

2h 23m

DEN

$218

United Airlines

Jul 4

LGA

6h 16m

1 stop

PIA

Jul 4

PIA

5h 52m

1 stop

LGA

$227

Multiple Airlines

Aug 13

DEN

2h 10m

PIA

Aug 14

PIA

12h 20m

1 stop

DEN

$243

Allegiant Air

Jul 5

DEN

2h 10m

PIA

Jul 16

PIA

2h 23m

DEN

$259

United Airlines

Jun 30

LGA

5h 47m

1 stop

PIA

Jul 4

PIA

5h 14m

1 stop

LGA

$260

Allegiant Air

Jul 9

DEN

2h 10m

PIA

Jul 12

PIA

2h 23m

DEN

$260

Multiple Airlines

Aug 13

DEN

2h 10m

PIA

Aug 17

PIA

30h 05m

2 stops

DEN

$261

Allegiant Air

Jul 5

DEN

2h 10m

PIA

Jul 12

PIA

2h 23m

DEN

$262

Flights to Champaign

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American Airlines

Jul 15

ORD

1h 08m

CMI

Jul 19

CMI

1h 31m

ORD

$229

American Airlines

Jul 9

ORD

1h 08m

CMI

Jul 12

CMI

1h 31m

ORD

$230

American Airlines

Jun 29

ORD

1h 09m

CMI

Jul 6

CMI

1h 15m

ORD

$244

American Airlines

Jul 1

DEN

6h 53m

1 stop

CMI

Jul 4

CMI

6h 43m

1 stop

DEN

$270

American Airlines

Jul 1

DEN

6h 53m

1 stop

CMI

Jul 4

CMI

12h 15m

2 stops

DEN

$276

United Airlines

Oct 31

ORD

1h 05m

CMI

Nov 4

CMI

1h 16m

ORD

$299

American Airlines

Aug 8

DEN

6h 50m

1 stop

CMI

Aug 15

CMI

5h 45m

1 stop

DEN

$307

American Airlines

Jul 1

BWI

6h 00m

1 stop

CMI

Jul 4

CMI

6h 49m

1 stop

BWI

$323

American Airlines

Jul 15

SEA

9h 11m

1 stop

CMI

Jul 22

CMI

8h 16m

1 stop

SEA

$338

American Airlines

Jul 1

DEN

6h 53m

1 stop

CMI

Jul 4

CMI

6h 43m

1 stop

DEN

$342

American Airlines

Jul 12

ORD

1h 08m

CMI

Jul 18

CMI

1h 31m

ORD

$343

American Airlines

Aug 17

DEN

6h 50m

1 stop

CMI

Aug 22

CMI

6h 23m

1 stop

DEN

$345

Flights to Bloomington, Illinois

Search all flight deals to Bloomington, Illinois

American Airlines

Aug 19

EWR

7h 40m

1 stop

BMI

Aug 25

BMI

6h 28m

1 stop

EWR

$281

Delta

Aug 11

IAD

6h 27m

1 stop

BMI

Aug 22

BMI

6h 56m

1 stop

IAD

$309

American Airlines

Jul 17

DEN

5h 38m

1 stop

BMI

Jul 20

BMI

7h 32m

1 stop

DEN

$309

Delta

Sep 23

HOU

4h 58m

1 stop

BMI

Sep 27

BMI

6h 12m

1 stop

HOU

$309

Delta

Sep 4

IAH

6h 07m

1 stop

BMI

Sep 6

BMI

7h 27m

1 stop

IAH

$309

Delta

Jul 7

EWR

8h 27m

1 stop

BMI

Jul 14

BMI

7h 16m

1 stop

EWR

$309

Delta

Jul 16

EWR

8h 27m

1 stop

BMI

Jul 22

BMI

6h 52m

1 stop

EWR

$310

American Airlines

Aug 17

DEN

5h 15m

1 stop

BMI

Aug 22

BMI

10h 24m

2 stops

DEN

$314

American Airlines

Sep 4

IAH

7h 00m

1 stop

BMI

Sep 6

BMI

10h 31m

2 stops

IAH

$314

American Airlines

Aug 11

IAD

11h 36m

2 stops

BMI

Aug 22

BMI

6h 48m

2 stops

IAD

$319

American Airlines

Aug 19

DEN

10h 40m

2 stops

BMI

Aug 22

BMI

10h 24m

2 stops

DEN

$319

Delta

Jul 17

IAD

6h 02m

1 stop

BMI

Jul 19

BMI

7h 23m

1 stop

IAD

$324

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.

9:50 pm - 12:24 am

DFW

ORD

2h 34mnonstop

1:22 pm - 4:08 pm

ORD

DFW

2h 46mnonstop

$152Frontier

Wed, Sep 16 - Tue, Sep 22

2:30 pm - 4:51 pm

DFW

MDW

2h 21mnonstop

6:17 pm - 8:54 pm

MDW

DFW

2h 37mnonstop

$152Frontier

Tue, Aug 4 - Fri, Aug 14

9:10 am - 10:56 am

LGA

ORD

2h 46mnonstop

6:00 am - 9:11 am

ORD

LGA

2h 11mnonstop

$187United Airlines

Wed, Jul 15 - Wed, Jul 22

1:59 pm - 3:53 pm

JFK

ORD

2h 54mnonstop

4:48 pm - 8:24 pm

ORD

JFK

2h 36mnonstop

$188American Airlines

Tue, Jul 14 - Sat, Jul 18

6:34 am - 8:20 am

LGA

ORD

2h 46mnonstop

6:00 am - 9:17 am

ORD

LGA

2h 17mnonstop

$188American Airlines

Sat, Jul 11 - Tue, Jul 14

11:20 am - 1:04 pm

LGA

ORD

2h 44mnonstop

7:00 am - 10:17 am

ORD

LGA

2h 17mnonstop

$192United Airlines

Wed, Sep 23 - Sun, Sep 27

5:00 pm - 7:10 pm

LGA

ORD

3h 10mnonstop

7:00 am - 10:14 am

ORD

LGA

2h 14mnonstop

$197Delta

Tue, Jul 7 - Sat, Jul 11

6:15 am - 11:45 am

EWR

ORD

6h 30m

1 stop

3:55 pm - 11:56 pm

ORD

EWR

7h 01m

1 stop

$207Delta

Sat, Jul 11 - Sat, Jul 11

6:46 pm - 5:00 am

SFO

ORD

8h 14m

1 stop

5:59 pm - 11:08 pm

ORD

SFO

7h 09m

1 stop

$315Alaska Airlines

Mon, Jul 6 - Sat, Jul 18

5:48 pm - 11:59 pm

SEA

ORD

4h 11mnonstop

6:00 am - 8:38 am

ORD

SEA

4h 38mnonstop

$359Alaska Airlines

Mon, Jun 29 - Tue, Jun 30

Fly from

Route

Depart

Return

Price

Cheapest round-trip

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 9/16

9:50 pm-12:24 am

Nonstop2h 34m

Chicago O'Hare Intl

Tue 9/22

1:22 pm-4:08 pm

Nonstop2h 46m

$152

DallasChicago

DFW - MDW

DFWMDW

Dallas/Fort Worth

Tue 8/4

2:30 pm-4:51 pm

Nonstop2h 21m

Chicago Midway

Fri 8/14

6:17 pm-8:54 pm

Nonstop2h 37m

$152

Quickest round-trip

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Wed 7/15

9:10 am-10:56 am

Nonstop2h 46m

Chicago O'Hare Intl

Wed 7/22

6:00 am-9:11 am

Nonstop2h 11m

$187

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Tue 7/14

1:59 pm-3:53 pm

Nonstop2h 54m

Chicago O'Hare Intl

Sat 7/18

4:48 pm-8:24 pm

Nonstop2h 36m

$188

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 7/11

6:34 am-8:20 am

Nonstop2h 46m

Chicago O'Hare Intl

Tue 7/14

6:00 am-9:17 am

Nonstop2h 17m

$188

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Wed 9/23

11:20 am-1:04 pm

Nonstop2h 44m

Chicago O'Hare Intl

Sun 9/27

7:00 am-10:17 am

Nonstop2h 17m

$192

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 7/7

5:00 pm-7:10 pm

Nonstop3h 10m

Chicago O'Hare Intl

Sat 7/11

7:00 am-10:14 am

Nonstop2h 14m

$197

NewarkChicago

EWR - ORD

EWRORD

Newark

Sat 7/11

6:15 am-11:45 am

1 stop6h 30m

Chicago O'Hare Intl

Sat 7/11

3:55 pm-11:56 pm

1 stop7h 01m

$207

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 7/6

6:46 pm-5:00 am

1 stop8h 14m

Chicago O'Hare Intl

Sat 7/18

5:59 pm-11:08 pm

1 stop7h 09m

$315

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Mon 6/29

5:48 pm-11:59 pm

Nonstop4h 11m

Chicago O'Hare Intl

Tue 6/30

6:00 am-8:38 am

Nonstop4h 38m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Illinois flights insights and trends

Explore insights for your Illinois flight to craft the best travel plan

Prices

Airlines

Other information

What is the cheapest flight I can find to Illinois?

Flights to Illinois vary based on month, airline, when you book, where you are departing from and many more variables, but on average momondo users can expect to spend about $715/pp. The absolute cheapest flight to Illinois is $29/pp

See prices from:

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 $401. Flights from United States to Illinois on a Sunday will generally be more expensive and average around $486. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Cheapest flights to cities in Illinois

Click on the cities below to find out when it's cheapest to fly to Illinois from United States

Chicago

Find flights to Chicago

Cheap Illinois flight deals and tips

Summary info about Illinois flight prices, duration and airlines

Best One-Way Price	$74
Best Round-Trip Price	$152
Fastest flight time	2h 24m
Popular in	March

The best one-way flight price to Illinois from United States in the last 5 days is $74 (Dallas/Fort Worth to Chicago O'Hare Intl).

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The best round-trip flight price to Illinois from United States in the last 5 days is $152 (Dallas/Fort Worth to Chicago O'Hare Intl).

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The fastest flight to Illinois from United States takes 2h 24m (Dallas/Fort Worth to Chicago Midway).

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March has the highest demand for flights to Illinois, with a 27% price increase on average.

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Frequently asked questions about flying to Illinois

What is the best airport to fly into to visit Chicago?

Chicago is about 99% more popular to visit than any other city in Illinois, according to momondo users. When visiting Chicago, it is recommended to fly into Chicago O'Hare Intl Airport, where you can typically get the cheapest prices and the most convenient travel options into the city.

I plan on visiting Magnificent Mile. Which airport is the quickest drive?

The closest airport to Magnificent Mile is Chicago O'Hare Intl Airport, and would make for the quickest drive. For those interested in a secondary airport to fly into, consider looking at flights heading to Chicago Midway Airport.

What are the most popular landmarks in Illinois?

Many visitors who travel to Illinois find themselves making a stop at popular landmarks such as Magnificent Mile, Grant Park, and River North.

What is the weather like in Illinois?

Temperatures in Illinois can vary between 23 °F and 73.4 °F based on the time of year. Typically, the coldest month in Illinois will be January, and the warmest month will be July. It is also worth noting that those looking to avoid rain and/or snow should consider traveling to Illinois in January, February, and December, as that is when precipitation is least likely.

What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois 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.

How much are flights to Illinois?

The cheapest flight to Illinois recently found on momondo was $29. If you’re unable to find a flight deal this cheap, keep in mind that anything less than $553 is considered a good price for flights to Illinois. $709 is the average cost to fly to Illinois, while $5,391 is the most expensive.

What is the best day of the week to fly to Illinois?

Flying to Illinois on a Wednesday or Thursday is your best option since this is when flight prices tend to be at their lowest for the week. The most expensive day of the week to fly to Illinois is on a Sunday.

Where is it cheapest to fly into Illinois?

If you're headed to Illinois, consider flying into Chicago O'Hare Intl airport in Chicago for the best deals, with an average airfare of $29. Alternatively, Quincy Regional airport in Quincy is a close second for cheapest flights to Illinois with an average airfare of $47.

When did momondo last update prices for flights to Illinois?

Prices for flights to Illinois are updated daily.

How many operators does momondo search for flights to Illinois?

As of June 2026, there are 61 operators available to choose from for flights to Illinois.

How old do you have to be to fly to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Illinois.

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

The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight to Illinois. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights to Illinois?

Once all potential 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 to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois 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.