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

The number of flights available between United States and Illinois is 3,718 per week as of April 2026. The most frequent departure day is Wed, with 16% of weekly flights leaving on this day.

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

As of April 2026, 531 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 Delta are the most popular carriers operating from United States to Illinois

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 41m 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 50m.

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.

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 April 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.

$52 Cheap Flights from the United States to Illinois in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

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

9:17 am - 11:57 am

ORD

DFW

2h 40mnonstop

$111Multiple Airlines

Wed, May 6 - Sat, May 9

12:38 pm - 3:03 pm

DFW

ORD

2h 25mnonstop

11:57 am - 2:51 pm

ORD

DFW

2h 54mnonstop

$112Multiple Airlines

Wed, May 27 - Sat, May 30

8:55 am - 11:40 am

DFW

ORD

2h 45mnonstop

12:05 pm - 3:04 pm

ORD

DFW

2h 59mnonstop

$113Frontier

Wed, May 6 - Sat, May 9

8:00 am - 10:45 am

DFW

ORD

2h 45mnonstop

9:17 am - 11:57 am

ORD

DFW

2h 40mnonstop

$114Multiple Airlines

Sat, May 30 - Sat, Jun 13

8:55 am - 11:40 am

DFW

ORD

2h 45mnonstop

9:30 am - 12:31 pm

ORD

DFW

3h 01mnonstop

$115Frontier

Tue, May 12 - Fri, May 15

10:00 am - 11:49 am

JFK

ORD

2h 49mnonstop

4:29 pm - 8:04 pm

ORD

JFK

2h 35mnonstop

$142American Airlines

Wed, May 27 - Thu, May 28

9:59 am - 11:51 am

JFK

ORD

2h 52mnonstop

4:33 pm - 8:04 pm

ORD

JFK

2h 31mnonstop

$153American Airlines

Tue, Jun 9 - Wed, Jun 10

6:40 am - 12:50 pm

BWI

ORD

7h 10m

1 stop

7:35 pm - 9:40 am

ORD

BWI

13h 05m

1 stop

$211Southwest

Tue, May 26 - Tue, May 26

5:05 pm - 6:27 pm

DCA

ORD

2h 22mnonstop

6:00 am - 8:54 am

ORD

DCA

1h 54mnonstop

$223United Airlines

Sat, May 23 - Mon, May 25

10:10 pm - 11:21 pm

IAD

ORD

2h 11mnonstop

6:18 pm - 9:22 pm

ORD

IAD

2h 04mnonstop

$223United Airlines

Thu, Sep 3 - Sat, Sep 5

JetBlue flights from United States to Illinois

Our best JetBlue deals on United States to Illinois flight tickets

JetBlue

Jun 1

JFK8:00 amNew York John F Kennedy Intl

2h 54m

ORD9:54 amChicago O'Hare Intl

Jun 2

ORD3:27 pmChicago O'Hare Intl

2h 32m

JFK6:59 pmNew York John F Kennedy Intl

$148

JetBlue

Jul 7

JFK3:30 pmNew York John F Kennedy Intl

2h 50m

ORD5:20 pmChicago O'Hare Intl

Jul 12

ORD6:00 amChicago O'Hare Intl

2h 17m

JFK9:17 amNew York John F Kennedy Intl

$172

JetBlue

May 29

JFK8:59 pmNew York John F Kennedy Intl

2h 59m

ORD10:58 pmChicago O'Hare Intl

Jun 2

ORD6:15 amChicago O'Hare Intl

2h 18m

JFK9:33 amNew York John F Kennedy Intl

$173

United Airlines flights from United States to Illinois

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

United Airlines

May 26

EWR9:40 pmNewark

2h 50m

ORD11:30 pmChicago O'Hare Intl

May 28

ORD5:00 amChicago O'Hare Intl

2h 13m

EWR8:13 amNewark

$151

United Airlines

May 12

LGA9:10 amNew York LaGuardia

2h 45m

ORD10:55 amChicago O'Hare Intl

May 12

ORD4:25 pmChicago O'Hare Intl

6h 05m

1 stop

LGA11:30 pmNew York LaGuardia

$152

United Airlines

Jun 10

LGA6:10 amNew York LaGuardia

2h 39m

ORD7:49 amChicago O'Hare Intl

Jun 13

ORD6:30 pmChicago O'Hare Intl

2h 29m

LGA9:59 pmNew York LaGuardia

$153

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 5/6

8:55 am-11:40 am

Nonstop2h 45m

Chicago O'Hare Intl

Sat 5/9

9:17 am-11:57 am

Nonstop2h 40m

$111

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 5/27

12:38 pm-3:03 pm

Nonstop2h 25m

Chicago O'Hare Intl

Sat 5/30

11:57 am-2:51 pm

Nonstop2h 54m

$112

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Wed 5/6

8:55 am-11:40 am

Nonstop2h 45m

Chicago O'Hare Intl

Sat 5/9

12:05 pm-3:04 pm

Nonstop2h 59m

$113

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Sat 5/30

8:00 am-10:45 am

Nonstop2h 45m

Chicago O'Hare Intl

Sat 6/13

9:17 am-11:57 am

Nonstop2h 40m

$114

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Tue 5/12

8:55 am-11:40 am

Nonstop2h 45m

Chicago O'Hare Intl

Fri 5/15

9:30 am-12:31 pm

Nonstop3h 01m

$115

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Wed 5/27

10:00 am-11:49 am

Nonstop2h 49m

Chicago O'Hare Intl

Thu 5/28

4:29 pm-8:04 pm

Nonstop2h 35m

$142

New YorkChicago

JFK - ORD

JFKORD

New York John F Kennedy Intl

Tue 6/9

9:59 am-11:51 am

Nonstop2h 52m

Chicago O'Hare Intl

Wed 6/10

4:33 pm-8:04 pm

Nonstop2h 31m

$153

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 5/26

6:40 am-12:50 pm

1 stop7h 10m

Chicago O'Hare Intl

Tue 5/26

7:35 pm-9:40 am

1 stop13h 05m

$211

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 5/23

5:05 pm-6:27 pm

Nonstop2h 22m

Chicago O'Hare Intl

Mon 5/25

6:00 am-8:54 am

Nonstop1h 54m

$223

Quickest round-trip

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Thu 9/3

10:10 pm-11:21 pm

Nonstop2h 11m

Chicago O'Hare Intl

Sat 9/5

6:18 pm-9:22 pm

Nonstop2h 04m

$223

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 $177, 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 $182.

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 $366. Flights from United States to Illinois on a Sunday will generally be more expensive and average around $439. 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 $292. Flights at noon are often more expensive with an average ticket price of $475.

What is the cheapest United States to Illinois flight route?

Fly from Newark 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 $238 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.

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	$45
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 $45. The best round-trip flight deal from United States to Illinois found on momondo in the last 72 hours is $72.

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 April 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 21.32% of the total bookings. Other popular models include Airbus A321neo with 14.72%, Boeing 737-900 with 9.90%, and Boeing 737 MAX 8 with 7.30%.

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
Spirit Airlines	PriceFrom $32	Free Cancellation	Rating 6.3 8,633 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $43	Free Cancellation	Rating 5.6 2,981 reviews	Search Frontier flights
JetBlue	PriceFrom $67	Free Cancellation	Rating 7.2 2,952 reviews	Search JetBlue flights
Delta	PriceFrom $74	Free Cancellation	Rating 7.9 8,438 reviews	Search Delta flights
Allegiant Air	PriceFrom $91	Free Cancellation	Rating 7.3 707 reviews	Search Allegiant Air flights
Hawaiian Airlines	PriceFrom $101	Free Cancellation	Rating 7.8 2,836 reviews	Search Hawaiian Airlines flights
Contour	PriceFrom $105	Free Cancellation	Rating 7.6 42 reviews	Search Contour flights
United Airlines	PriceFrom $118	Free Cancellation	Rating 7.4 9,636 reviews	Search United Airlines flights
Breeze Airways	PriceFrom $121	Free Cancellation	Rating 8.1 281 reviews	Search Breeze Airways flights
Southwest	PriceFrom $125	Free Cancellation	Rating 8.0 4,328 reviews	Search Southwest 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 5/23

Sat 5/30

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 $56

Flights to Los Angelesfrom $31

Flights to Orlandofrom $53

Flights to Miamifrom $48

Flights to Chicagofrom $69

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $37

Flights to Washington, D.C.from $56

Flights to Bostonfrom $75

Flights to Atlantafrom $56

Flights to Dallasfrom $60

Flights to Fort Lauderdalefrom $56

Cheap flights from the United States to Illinois from $52

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 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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

JetBlue flights from United States to Illinois

Our best JetBlue deals on United States to Illinois flight tickets

United Airlines flights from United States to Illinois

Our best United Airlines 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

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

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