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 21m.

$76 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

Aug 4

DFW

2h 43m

ORD

Aug 7

ORD

2h 52m

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

Sep 25

DFW

2h 34m

ORD

Sep 29

ORD

11h 26m

1 stop

DFW

$154

Frontier

Sep 25

DFW

2h 34m

ORD

Sep 28

ORD

2h 46m

DFW

$155

Frontier

Oct 29

DFW

2h 42m

ORD

Nov 4

ORD

19h 46m

1 stop

DFW

$156

Frontier

Aug 4

DFW

2h 21m

MDW

Aug 8

MDW

2h 40m

DFW

$156

Frontier

Aug 20

DFW

2h 51m

ORD

Aug 24

ORD

2h 41m

DFW

$157

Frontier

Aug 22

DFW

2h 23m

MDW

Aug 24

MDW

2h 37m

DFW

$157

American Airlines

Aug 4

DFW

2h 54m

ORD

Aug 11

ORD

2h 34m

DFW

$159

Frontier

Aug 2

DFW

2h 24m

MDW

Aug 5

MDW

2h 35m

DFW

$159

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

American Airlines

Jul 4

IAH

4h 45m

1 stop

MLI

Jul 10

MLI

5h 01m

1 stop

IAH

$246

American Airlines

Jul 17

DEN

5h 44m

1 stop

MLI

Jul 20

MLI

6h 27m

1 stop

DEN

$259

Delta

Aug 22

JFK

5h 42m

1 stop

MLI

Aug 26

MLI

7h 05m

1 stop

JFK

$265

Multiple Airlines

Aug 26

SEA

14h 03m

1 stop

MLI

Aug 30

MLI

23h 29m

1 stop

SEA

$274

American Airlines

Aug 25

IAH

5h 36m

1 stop

MLI

Aug 31

MLI

5h 13m

1 stop

IAH

$276

Delta

Aug 25

HOU

4h 59m

1 stop

MLI

Aug 31

MLI

4h 56m

1 stop

HOU

$276

United Airlines

Jul 10

DEN

2h 16m

MLI

Jul 14

MLI

6h 18m

1 stop

DEN

$279

Delta

Aug 25

IAH

11h 40m

2 stops

MLI

Aug 31

MLI

5h 15m

1 stop

IAH

$281

Delta

Jul 14

EWR

5h 12m

1 stop

MLI

Jul 21

MLI

6h 05m

1 stop

EWR

$281

American Airlines

Jul 8

JFK

5h 19m

1 stop

MLI

Jul 15

MLI

7h 11m

1 stop

JFK

$286

American Airlines

Jul 4

JFK

5h 28m

1 stop

MLI

Jul 11

MLI

7h 22m

1 stop

JFK

$288

Flights to Peoria, Illinois

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Allegiant Air

Oct 29

DEN

1h 59m

PIA

Nov 1

PIA

2h 20m

DEN

$104

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 9

DEN

2h 10m

PIA

Jul 19

PIA

2h 23m

DEN

$208

Allegiant Air

Jul 9

DEN

2h 10m

PIA

Jul 19

PIA

2h 23m

DEN

$237

American Airlines

Aug 28

DEN

5h 15m

1 stop

PIA

Aug 31

PIA

6h 11m

1 stop

DEN

$239

Allegiant Air

Jul 30

DEN

2h 10m

PIA

Aug 2

PIA

2h 23m

DEN

$241

Multiple Airlines

Aug 13

DEN

2h 10m

PIA

Aug 14

PIA

12h 20m

1 stop

DEN

$243

American Airlines

Jul 2

DEN

6h 17m

1 stop

PIA

Jul 9

PIA

6h 19m

1 stop

DEN

$259

Allegiant Air

Jul 9

DEN

2h 10m

PIA

Jul 12

PIA

2h 23m

DEN

$260

Flights to Champaign

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American Airlines

Jul 8

IAH

4h 54m

1 stop

CMI

Jul 18

CMI

5h 17m

1 stop

IAH

$306

American Airlines

Jul 4

TPA

5h 32m

1 stop

CMI

Jul 8

CMI

7h 34m

2 stops

TPA

$312

American Airlines

Jul 4

TPA

11h 45m

2 stops

CMI

Jul 8

CMI

10h 37m

2 stops

TPA

$317

American Airlines

Jul 4

TPA

5h 32m

1 stop

CMI

Jul 8

CMI

8h 13m

1 stop

TPA

$323

American Airlines

Jul 8

IAH

9h 12m

2 stops

CMI

Jul 18

CMI

5h 17m

1 stop

IAH

$329

American Airlines

Jul 3

TPA

10h 07m

2 stops

CMI

Jul 7

CMI

4h 48m

1 stop

TPA

$329

American Airlines

Jul 15

SEA

9h 11m

1 stop

CMI

Jul 25

CMI

8h 18m

1 stop

SEA

$338

American Airlines

Jul 8

IAH

10h 44m

2 stops

CMI

Jul 18

CMI

5h 17m

1 stop

IAH

$348

United Airlines

Dec 5

EWR

7h 03m

1 stop

CMI

Dec 9

CMI

5h 34m

1 stop

EWR

$350

United Airlines

Oct 27

DCA

5h 28m

1 stop

CMI

Oct 31

CMI

5h 38m

1 stop

DCA

$350

American Airlines

Jul 4

TPA

5h 32m

1 stop

CMI

Jul 7

CMI

11h 42m

2 stops

TPA

$358

American Airlines

Jul 4

TPA

10h 22m

2 stops

CMI

Jul 7

CMI

11h 42m

2 stops

TPA

$363

Flights to Bloomington, Illinois

Search all flight deals to Bloomington, Illinois

Delta

Aug 29

TYS

5h 47m

1 stop

BMI

Aug 31

BMI

6h 34m

1 stop

TYS

$289

American Airlines

Aug 29

TYS

8h 37m

2 stops

BMI

Aug 31

BMI

3h 36m

1 stop

TYS

$294

Delta

Aug 19

DEN

7h 22m

1 stop

BMI

Aug 26

BMI

7h 38m

1 stop

DEN

$309

Delta

Jul 4

HOU

5h 59m

1 stop

BMI

Jul 11

BMI

5h 33m

1 stop

HOU

$309

Delta

Sep 4

IAH

6h 07m

1 stop

BMI

Sep 6

BMI

7h 27m

1 stop

IAH

$309

American Airlines

Jul 11

OKC

5h 19m

1 stop

BMI

Jul 18

BMI

5h 34m

1 stop

OKC

$309

Delta

Jul 11

AUS

4h 58m

1 stop

BMI

Jul 15

BMI

5h 03m

1 stop

AUS

$309

American Airlines

Jul 14

DEN

10h 56m

2 stops

BMI

Jul 21

BMI

6h 02m

1 stop

DEN

$314

American Airlines

Sep 4

IAH

7h 00m

1 stop

BMI

Sep 6

BMI

10h 31m

2 stops

IAH

$314

American Airlines

Jul 11

AUS

9h 51m

2 stops

BMI

Jul 15

BMI

6h 13m

1 stop

AUS

$314

American Airlines

Aug 19

DEN

10h 40m

2 stops

BMI

Aug 22

BMI

10h 24m

2 stops

DEN

$319

Delta

Jul 4

TPA

6h 05m

1 stop

BMI

Jul 8

BMI

7h 11m

1 stop

TPA

$319

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.

1:25 pm - 4:08 pm

DFW

ORD

2h 43mnonstop

9:20 am - 12:12 pm

ORD

DFW

2h 52mnonstop

$152Frontier

Tue, Aug 4 - Fri, Aug 7

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

4:50 pm - 7:44 pm

DFW

ORD

2h 54mnonstop

1:50 pm - 4:24 pm

ORD

DFW

2h 34mnonstop

$159American Airlines

Tue, Aug 4 - Tue, Aug 11

9:27 pm - 10:59 pm

LGA

ORD

2h 32mnonstop

7:45 pm - 11:10 pm

ORD

LGA

2h 25mnonstop

$185United Airlines

Sat, Aug 15 - Mon, Aug 17

9:23 pm - 11:29 pm

LGA

ORD

3h 06mnonstop

6:00 am - 9:13 am

ORD

LGA

2h 13mnonstop

$186American Airlines

Sat, Aug 1 - Thu, Aug 6

7:30 am - 9:06 am

LGA

ORD

2h 36mnonstop

6:00 am - 9:09 am

ORD

LGA

2h 09mnonstop

$187Delta

Wed, Jul 15 - Wed, Jul 22

6:00 am - 7:29 am

LGA

ORD

2h 29mnonstop

7:05 am - 10:19 am

ORD

LGA

2h 14mnonstop

$188Delta

Mon, Aug 10 - Tue, Aug 11

7:28 pm - 11:31 pm

LGA

ORD

5h 03m

1 stop

4:00 pm - 7:22 pm

ORD

LGA

2h 22mnonstop

$197United Airlines

Tue, Jul 7 - Sat, Jul 11

4:31 pm - 1:21 pm

SFO

ORD

18h 50m

1 stop

7:59 pm - 11:49 am

ORD

SFO

17h 50m

1 stop

$315Alaska Airlines

Mon, Jul 6 - Tue, Jul 14

6:00 am - 12:03 pm

SEA

ORD

4h 03mnonstop

6:42 pm - 9:34 pm

ORD

SEA

4h 52mnonstop

$355Alaska Airlines

Wed, Jul 1 - Fri, Jul 10

Fly from

Route

Depart

Return

Price

Cheapest round-trip

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 8/4

1:25 pm-4:08 pm

Nonstop2h 43m

Chicago O'Hare Intl

Fri 8/7

9:20 am-12:12 pm

Nonstop2h 52m

$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

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 8/4

4:50 pm-7:44 pm

Nonstop2h 54m

Chicago O'Hare Intl

Tue 8/11

1:50 pm-4:24 pm

Nonstop2h 34m

$159

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 8/15

9:27 pm-10:59 pm

Nonstop2h 32m

Chicago O'Hare Intl

Mon 8/17

7:45 pm-11:10 pm

Nonstop2h 25m

$185

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 8/1

9:23 pm-11:29 pm

Nonstop3h 06m

Chicago O'Hare Intl

Thu 8/6

6:00 am-9:13 am

Nonstop2h 13m

$186

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Wed 7/15

7:30 am-9:06 am

Nonstop2h 36m

Chicago O'Hare Intl

Wed 7/22

6:00 am-9:09 am

Nonstop2h 09m

$187

Quickest round-trip

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Mon 8/10

6:00 am-7:29 am

Nonstop2h 29m

Chicago O'Hare Intl

Tue 8/11

7:05 am-10:19 am

Nonstop2h 14m

$188

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 7/7

7:28 pm-11:31 pm

1 stop5h 03m

Chicago O'Hare Intl

Sat 7/11

4:00 pm-7:22 pm

Nonstop2h 22m

$197

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 7/6

4:31 pm-1:21 pm

1 stop18h 50m

Chicago O'Hare Intl

Tue 7/14

7:59 pm-11:49 am

1 stop17h 50m

$315

SeattleChicago

SEA - ORD

SEAORD

Seattle/Tacoma Intl

Wed 7/1

6:00 am-12:03 pm

Nonstop4h 03m

Chicago O'Hare Intl

Fri 7/10

6:42 pm-9:34 pm

Nonstop4h 52m

$355

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 Thursday 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 $482. 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	$76
Best Round-Trip Price	$152
Fastest flight time	2h 24m
Popular in	February

The best one-way flight price to Illinois from United States in the last 5 days is $76 (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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February has the highest demand for flights to Illinois, with a 18% 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 Thursday or Wednesday 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.