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 (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.

$68 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 9

DFW

2h 42m

ORD

Sep 10

ORD

2h 46m

DFW

$149

Frontier

Aug 25

DFW

2h 46m

ORD

Aug 29

ORD

2h 41m

DFW

$151

Frontier

Aug 15

DFW

2h 43m

ORD

Aug 18

ORD

2h 45m

DFW

$152

Frontier

Sep 9

DFW

2h 42m

ORD

Sep 12

ORD

2h 46m

DFW

$160

Frontier

Oct 21

DFW

2h 34m

ORD

Oct 26

ORD

2h 39m

DFW

$163

Frontier

Jun 20

DFW

2h 51m

ORD

Jun 23

ORD

2h 44m

DFW

$166

Frontier

Jun 30

DFW

2h 33m

ORD

Jul 15

ORD

2h 52m

DFW

$168

Frontier

Jun 24

DFW

2h 51m

ORD

Jul 1

ORD

2h 47m

DFW

$169

Frontier

Jun 20

DFW

2h 51m

ORD

Jun 25

ORD

2h 47m

DFW

$170

Frontier

Aug 13

DFW

2h 43m

ORD

Aug 15

ORD

2h 52m

DFW

$171

Frontier

Sep 14

DFW

2h 42m

ORD

Sep 17

ORD

2h 39m

DFW

$174

Frontier

Jun 23

DFW

2h 33m

ORD

Jul 9

ORD

2h 43m

DFW

$175

Flights to Peoria, Illinois

Search all flight deals to Peoria, Illinois

Allegiant Air

Sep 10

DEN

2h 03m

PIA

Sep 13

PIA

2h 20m

DEN

$128

Allegiant Air

Sep 10

DEN

2h 03m

PIA

Sep 13

PIA

2h 20m

DEN

$133

Allegiant Air

Oct 1

DEN

1h 59m

PIA

Oct 4

PIA

2h 20m

DEN

$157

Allegiant Air

Sep 10

DEN

2h 03m

PIA

Sep 17

PIA

2h 20m

DEN

$171

Allegiant Air

Jul 9

DEN

2h 10m

PIA

Jul 12

PIA

2h 23m

DEN

$184

Allegiant Air

Jun 18

DEN

2h 06m

PIA

Jul 2

PIA

2h 23m

DEN

$265

Allegiant Air

Jul 19

DEN

2h 10m

PIA

Jul 30

PIA

2h 23m

DEN

$267

American Airlines

Sep 16

SEA

7h 04m

1 stop

PIA

Sep 23

PIA

9h 32m

1 stop

SEA

$271

American Airlines

Jul 3

AUS

5h 56m

1 stop

PIA

Jul 4

PIA

5h 13m

1 stop

AUS

$277

United Airlines

Jun 20

DEN

2h 28m

PIA

Jun 27

PIA

5h 21m

1 stop

DEN

$279

Allegiant Air

Jul 5

DEN

2h 10m

PIA

Jul 9

PIA

2h 23m

DEN

$280

American Airlines

Jul 3

AUS

6h 17m

1 stop

PIA

Jul 4

PIA

10h 27m

2 stops

AUS

$282

Flights to Moline

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Delta

Jul 8

IAH

7h 53m

1 stop

MLI

Jul 14

MLI

6h 57m

1 stop

IAH

$243

Delta

Jul 8

HOU

4h 56m

1 stop

MLI

Jul 14

MLI

4h 51m

1 stop

HOU

$243

American Airlines

Jul 4

IAH

9h 24m

2 stops

MLI

Jul 7

MLI

4h 56m

1 stop

IAH

$248

Delta

Jul 15

DCA

7h 09m

1 stop

MLI

Jul 18

MLI

7h 40m

1 stop

DCA

$261

Delta

Jul 15

IAD

7h 04m

1 stop

MLI

Jul 18

MLI

6h 34m

1 stop

IAD

$261

Delta

Jul 7

IAH

7h 53m

1 stop

MLI

Jul 11

MLI

6h 57m

1 stop

IAH

$271

Delta

Jul 8

HOU

4h 56m

1 stop

MLI

Jul 15

MLI

4h 51m

1 stop

HOU

$271

Delta

Jul 8

IAH

5h 11m

1 stop

MLI

Jul 17

MLI

6h 57m

1 stop

IAH

$276

Delta

Jul 8

HOU

4h 56m

1 stop

MLI

Jul 17

MLI

4h 51m

1 stop

HOU

$276

Delta

Oct 2

DCA

5h 23m

1 stop

MLI

Oct 3

MLI

5h 33m

1 stop

DCA

$285

Delta

Jun 12

DEN

8h 36m

1 stop

MLI

Jun 19

MLI

8h 05m

1 stop

DEN

$289

Delta

Jul 11

MIA

5h 12m

1 stop

MLI

Jul 14

MLI

6h 12m

1 stop

MIA

$293

Flights to Champaign

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United Airlines

Oct 27

BOS

5h 35m

1 stop

CMI

Oct 31

CMI

5h 06m

1 stop

BOS

$270

American Airlines

Jul 8

AUS

5h 06m

1 stop

CMI

Jul 11

CMI

5h 25m

1 stop

AUS

$270

American Airlines

Jul 4

DCA

4h 32m

1 stop

CMI

Jul 11

CMI

4h 25m

1 stop

DCA

$271

United Airlines

Oct 27

BOS

7h 50m

2 stops

CMI

Oct 31

CMI

7h 01m

1 stop

BOS

$276

United Airlines

Nov 21

ATL

5h 50m

1 stop

CMI

Nov 28

CMI

6h 49m

1 stop

ATL

$278

United Airlines

Nov 11

BOS

7h 50m

2 stops

CMI

Nov 14

CMI

6h 36m

2 stops

BOS

$281

United Airlines

Oct 27

BOS

7h 50m

2 stops

CMI

Oct 31

CMI

6h 36m

2 stops

BOS

$297

American Airlines

Jul 1

EWR

6h 52m

1 stop

CMI

Jul 4

CMI

6h 26m

1 stop

EWR

$306

American Airlines

Nov 11

BOS

7h 03m

1 stop

CMI

Nov 14

CMI

6h 09m

1 stop

BOS

$306

American Airlines

Jun 17

AUS

6h 16m

1 stop

CMI

Jun 24

CMI

7h 21m

1 stop

AUS

$306

American Airlines

Jun 17

AUS

9h 54m

2 stops

CMI

Jun 24

CMI

4h 52m

1 stop

AUS

$312

American Airlines

Jul 3

DCA

5h 08m

1 stop

CMI

Jul 7

CMI

3h 55m

1 stop

DCA

$314

Flights to Bloomington, Illinois

Search all flight deals to Bloomington, Illinois

Delta

Sep 4

HOU

4h 47m

1 stop

BMI

Sep 6

BMI

6h 03m

1 stop

HOU

$309

Delta

Jun 20

IAH

7h 31m

1 stop

BMI

Jul 6

BMI

7h 38m

1 stop

IAH

$309

American Airlines

Jun 20

IAH

10h 04m

2 stops

BMI

Jul 6

BMI

6h 06m

1 stop

IAH

$314

Delta

Jun 23

TPA

5h 52m

1 stop

BMI

Jun 27

BMI

5h 11m

1 stop

TPA

$319

Delta

Jun 16

BOS

5h 36m

1 stop

BMI

Jun 27

BMI

5h 55m

1 stop

BOS

$319

American Airlines

Jun 16

TPA

10h 10m

2 stops

BMI

Jun 23

BMI

6h 35m

1 stop

TPA

$324

American Airlines

Jun 16

TPA

8h 50m

2 stops

BMI

Jun 23

BMI

8h 34m

2 stops

TPA

$329

American Airlines

Aug 27

PHX

6h 02m

1 stop

BMI

Oct 6

BMI

5h 57m

1 stop

PHX

$329

American Airlines

Sep 4

PHX

6h 02m

1 stop

BMI

Sep 6

BMI

8h 28m

2 stops

PHX

$334

Delta

Jul 2

TPA

6h 06m

1 stop

BMI

Jul 5

BMI

5h 11m

1 stop

TPA

$344

Delta

Jun 16

BOS

7h 31m

1 stop

BMI

Jun 29

BMI

5h 55m

1 stop

BOS

$344

American Airlines

Aug 13

SEA

9h 13m

1 stop

BMI

Aug 15

BMI

7h 00m

1 stop

SEA

$346

Find the cheapest flights from the United States to Illinois

Round-trip

One-way

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Direct

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

Enter your travel dates to find the best prices.

5:13 pm - 7:55 pm

DFW

ORD

2h 42mnonstop

1:22 pm - 4:08 pm

ORD

DFW

2h 46mnonstop

$149Frontier

Wed, Sep 9 - Thu, Sep 10

5:43 pm - 8:29 pm

DFW

ORD

2h 46mnonstop

9:33 am - 12:14 pm

ORD

DFW

2h 41mnonstop

$151Frontier

Tue, Aug 25 - Sat, Aug 29

3:40 pm - 5:34 pm

JFK

ORD

2h 54mnonstop

6:00 am - 9:17 am

ORD

JFK

2h 17mnonstop

$176JetBlue

Tue, Jul 7 - Fri, Jul 10

10:30 am - 12:17 pm

JFK

ORD

2h 47mnonstop

6:00 am - 9:24 am

ORD

JFK

2h 24mnonstop

$177Delta

Tue, Jul 7 - Mon, Jul 13

6:50 pm - 8:56 pm

LGA

ORD

3h 06mnonstop

6:00 am - 9:09 am

ORD

LGA

2h 09mnonstop

$177Delta

Tue, Jul 7 - Wed, Jul 15

7:59 am - 10:02 am

JFK

ORD

3h 03mnonstop

4:30 pm - 8:04 pm

ORD

JFK

2h 34mnonstop

$180American Airlines

Wed, Jul 8 - Tue, Jul 14

2:29 pm - 4:16 pm

JFK

ORD

2h 47mnonstop

9:40 am - 12:59 pm

ORD

JFK

2h 19mnonstop

$182JetBlue

Fri, Jul 3 - Wed, Jul 8

1:25 pm - 3:02 pm

LGA

ORD

2h 37mnonstop

7:50 pm - 11:20 pm

ORD

LGA

2h 30mnonstop

$192United Airlines

Tue, Jun 9 - Tue, Jun 16

5:11 am - 6:59 am

EWR

ORD

2h 48mnonstop

8:09 pm - 11:30 pm

ORD

EWR

2h 21mnonstop

$192American Airlines

Sat, Jun 6 - Tue, Jul 14

6:00 am - 7:39 am

LGA

ORD

2h 39mnonstop

6:25 pm - 9:54 pm

ORD

LGA

2h 29mnonstop

$193United Airlines

Sat, Jun 20 - Tue, Jun 23

Fly from

Route

Depart

Return

Price

Cheapest round-trip

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 9/9

5:13 pm-7:55 pm

Nonstop2h 42m

Chicago O'Hare Intl

Thu 9/10

1:22 pm-4:08 pm

Nonstop2h 46m

$149

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 8/25

5:43 pm-8:29 pm

Nonstop2h 46m

Chicago O'Hare Intl

Sat 8/29

9:33 am-12:14 pm

Nonstop2h 41m

$151

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Tue 7/7

3:40 pm-5:34 pm

Nonstop2h 54m

Chicago O'Hare Intl

Fri 7/10

6:00 am-9:17 am

Nonstop2h 17m

$176

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Tue 7/7

10:30 am-12:17 pm

Nonstop2h 47m

Chicago O'Hare Intl

Mon 7/13

6:00 am-9:24 am

Nonstop2h 24m

$177

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 7/7

6:50 pm-8:56 pm

Nonstop3h 06m

Chicago O'Hare Intl

Wed 7/15

6:00 am-9:09 am

Nonstop2h 09m

$177

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Wed 7/8

7:59 am-10:02 am

Nonstop3h 03m

Chicago O'Hare Intl

Tue 7/14

4:30 pm-8:04 pm

Nonstop2h 34m

$180

Quickest round-trip

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Fri 7/3

2:29 pm-4:16 pm

Nonstop2h 47m

Chicago O'Hare Intl

Wed 7/8

9:40 am-12:59 pm

Nonstop2h 19m

$182

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Tue 6/9

1:25 pm-3:02 pm

Nonstop2h 37m

Chicago O'Hare Intl

Tue 6/16

7:50 pm-11:20 pm

Nonstop2h 30m

$192

NewarkChicago

EWR - ORD

EWRORD

Newark

Sat 6/6

5:11 am-6:59 am

Nonstop2h 48m

Chicago O'Hare Intl

Tue 7/14

8:09 pm-11:30 pm

Nonstop2h 21m

$192

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 6/20

6:00 am-7:39 am

Nonstop2h 39m

Chicago O'Hare Intl

Tue 6/23

6:25 pm-9:54 pm

Nonstop2h 29m

$193

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 $704/pp. The absolute cheapest flight to Illinois is $34/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 $381. Flights from United States to Illinois on a Sunday will generally be more expensive and average around $449. 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	$68
Best Round-Trip Price	$149
Fastest flight time	2h 22m
Popular in	February

The best one-way flight price to Illinois from United States in the last 5 days is $68 (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 $149 (Dallas/Fort Worth to Chicago O'Hare Intl).

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The fastest flight to Illinois from United States takes 2h 22m (Washington, D.C. Reagan-National to Chicago O'Hare Intl).

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February has the highest demand for flights to Illinois, with a 22% 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 98% 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?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois according to our data. American 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 $34. If you’re unable to find a flight deal this cheap, keep in mind that anything less than $541 is considered a good price for flights to Illinois. $692 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 Friday 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 $34. Alternatively, Belleville airport in Belleville is a close second for cheapest flights to Illinois with an average airfare of $45.

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 May 2026, there are 62 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.