What airlines fly to United States?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to United States from Illinois 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 United States. Keep in mind that there are 12 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

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

As of April 2026, there are 3,745 flights per week flying from Illinois to United States. The most common day of the week flights depart is Sun, with 18% of flights taking off on this day.

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

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

How long is the flight from Illinois to United States?

Flight times vary depending on what airport in Illinois you fly out of and what airport in United States you fly into. For example, flying from Chicago to Los Angeles takes 4h 15m on average. On the other hand, flying from Peoria to Los Angeles takes 6h 11m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

535 flights are operational daily from Illinois to United States as of April 2026. The most popular departure time for this route is 4:00PM, with 39% of flights per day taking off at noon.

When did momondo last update prices for flights from Illinois to United States?

Prices for flights from Illinois to United States refresh daily.

How many operators does momondo search for flights from Illinois to United States?

There are 10 operators available for flights from Illinois to United States as of April 2026.

How old do you have to be to fly from Illinois to United States?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to United States.

What documentation or ID do you need to fly to United States?

The travel and health documents required for your trip to United States 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 United States. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$45 Cheap Flights from Illinois to the United States in 2026

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Find the cheapest flights from Illinois to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:57 pm - 8:57 pm

ORD

DFW

3h 00mnonstop

6:00 am - 10:39 pm

DFW

ORD

16h 39m

1 stop

$104Frontier

Wed, Apr 29 - Sun, May 3

1:49 pm - 5:00 pm

ORD

LGA

2h 11mnonstop

6:29 pm - 8:11 pm

LGA

ORD

2h 42mnonstop

$105Spirit Airlines

Tue, Jun 9 - Wed, Jun 10

5:57 pm - 8:57 pm

ORD

DFW

3h 00mnonstop

7:30 am - 2:39 pm

DFW

ORD

7h 09m

1 stop

$105Frontier

Tue, Apr 28 - Sun, May 17

5:57 pm - 8:57 pm

ORD

DFW

3h 00mnonstop

9:38 am - 12:04 pm

DFW

ORD

2h 26mnonstop

$106Multiple Airlines

Wed, Apr 29 - Thu, May 7

9:20 am - 12:21 pm

ORD

DFW

3h 01mnonstop

9:00 am - 11:33 am

DFW

ORD

2h 33mnonstop

$107Frontier

Sat, Jun 6 - Tue, Jun 9

1:49 pm - 5:00 pm

ORD

LGA

2h 11mnonstop

6:29 pm - 8:11 pm

LGA

ORD

2h 42mnonstop

$108Spirit Airlines

Fri, May 8 - Mon, May 11

4:03 pm - 6:38 pm

ORD

DFW

2h 35mnonstop

7:35 pm - 12:25 pm

DFW

ORD

16h 50m

1 stop

$112Multiple Airlines

Wed, Apr 29 - Tue, Jun 9

11:10 am - 2:37 pm

ORD

JFK

2h 27mnonstop

12:45 pm - 2:30 pm

JFK

ORD

2h 45mnonstop

$168JetBlue

Wed, May 27 - Wed, Jun 3

9:35 am - 12:59 pm

ORD

JFK

2h 24mnonstop

3:30 pm - 5:22 pm

JFK

ORD

2h 52mnonstop

$170JetBlue

Tue, Jun 23 - Tue, Jun 23

6:04 am - 9:29 am

ORD

JFK

2h 25mnonstop

7:35 pm - 9:36 pm

JFK

ORD

3h 01mnonstop

$171Delta

Tue, May 5 - Tue, May 12

United Airlines flights from Illinois to United States

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

United Airlines

May 5

ORD10:30 amChicago O'Hare Intl

4h 42m

SFO1:12 pmSan Francisco

May 7

SFO11:56 pmSan Francisco

4h 24m

ORD6:20 amChicago O'Hare Intl

$251

United Airlines

Apr 25

ORD4:06 pmChicago O'Hare Intl

4h 40m

SEA6:46 pmSeattle/Tacoma Intl

May 2

SEA11:53 pmSeattle/Tacoma Intl

4h 01m

ORD5:54 amChicago O'Hare Intl

$305

Delta flights from Illinois to United States

Our best Delta deals on Illinois to United States flight tickets

Delta

May 5

ORD6:04 amChicago O'Hare Intl

2h 25m

JFK9:29 amNew York John F Kennedy Intl

May 12

JFK7:35 pmNew York John F Kennedy Intl

3h 01m

ORD9:36 pmChicago O'Hare Intl

$171

Delta

Aug 26

ORD6:00 amChicago O'Hare Intl

2h 23m

JFK9:23 amNew York John F Kennedy Intl

Aug 28

JFK7:35 pmNew York John F Kennedy Intl

3h 01m

ORD9:36 pmChicago O'Hare Intl

$177

Delta

Apr 29

ORD1:06 pmChicago O'Hare Intl

2h 23m

JFK4:29 pmNew York John F Kennedy Intl

May 5

JFK11:45 amNew York John F Kennedy Intl

5h 57m

1 stop

ORD4:42 pmChicago O'Hare Intl

$181

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Wed 4/29

5:57 pm-8:57 pm

Nonstop3h 00m

Dallas/Fort Worth

Sun 5/3

6:00 am-10:39 pm

1 stop16h 39m

$104

Quickest round-trip

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Tue 6/9

1:49 pm-5:00 pm

Nonstop2h 11m

New York LaGuardia

Wed 6/10

6:29 pm-8:11 pm

Nonstop2h 42m

$105

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Tue 4/28

5:57 pm-8:57 pm

Nonstop3h 00m

Dallas/Fort Worth

Sun 5/17

7:30 am-2:39 pm

1 stop7h 09m

$105

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Wed 4/29

5:57 pm-8:57 pm

Nonstop3h 00m

Dallas/Fort Worth

Thu 5/7

9:38 am-12:04 pm

Nonstop2h 26m

$106

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Sat 6/6

9:20 am-12:21 pm

Nonstop3h 01m

Dallas/Fort Worth

Tue 6/9

9:00 am-11:33 am

Nonstop2h 33m

$107

ChicagoNew York

ORD - LGA

ORDLGA

Chicago O'Hare Intl

Fri 5/8

1:49 pm-5:00 pm

Nonstop2h 11m

New York LaGuardia

Mon 5/11

6:29 pm-8:11 pm

Nonstop2h 42m

$108

ChicagoDallas

ORD - DFW

ORDDFW

Chicago O'Hare Intl

Wed 4/29

4:03 pm-6:38 pm

Nonstop2h 35m

Dallas/Fort Worth

Tue 6/9

7:35 pm-12:25 pm

1 stop16h 50m

$112

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Wed 5/27

11:10 am-2:37 pm

Nonstop2h 27m

New York John F Kennedy Intl

Wed 6/3

12:45 pm-2:30 pm

Nonstop2h 45m

$168

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Tue 6/23

9:35 am-12:59 pm

Nonstop2h 24m

New York John F Kennedy Intl

Tue 6/23

3:30 pm-5:22 pm

Nonstop2h 52m

$170

ChicagoNew York

ORD - JFK

ORDJFK

Chicago O'Hare Intl

Tue 5/5

6:04 am-9:29 am

Nonstop2h 25m

New York John F Kennedy Intl

Tue 5/12

7:35 pm-9:36 pm

Nonstop3h 01m

$171

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 Illinois to United States

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 United States?

In general, January is the cheapest month to fly from Illinois to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $160. If you aren’t able to travel during the month of January, then book flights to United States from Illinois during September instead. Flights to United States in September, while not as cheap as those in January, still average around $198.

What is the cheapest day to depart on your flight to United States?

According to our data, Friday is the cheapest day to fly to United States from Illinois. The lowest ticket price found for a Friday departure recently was $257. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $383. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the evening when flights can be purchased for as low as $228. Try not to purchase tickets at noon because they tend to be around $359. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to United States flight route?

Fly from Chicago Midway to Newark for the best Illinois - United States flight prices

How far in advance should I book a flight to United States?

You are more likely to see cheaper flights to United States from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $208 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Illinois for as low as $140 on momondo.

What cabin class options are available on Illinois to United States flights?

There are 4 cabin classes available to choose from on Illinois to United States 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 Illinois to United States flights?

No. A direct flight is the cheapest option for a flight between Illinois to United States.

Cheap Illinois to United States flight deals and tips

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

Best Price Found	$40
Fastest flight time	0h 45m
Direct flights	Every day
Airports in United States	4,297 airports

The best one-way flight to United States from Illinois in the past 72 hours is $40. The best round-trip flight deal from Illinois to United States found on momondo in the last 72 hours is $61.

The fastest flight from Illinois to United States takes 0h 45m

Direct flights go from Illinois to United States every day.

There are 4,297 airports in United States. From Illinois there are direct flights to New York LaGuardia (LGA).

Search flight deals

Frequently asked questions about flying from Illinois to the United States

When did momondo last update prices for flights from Illinois to United States?
Prices for flights from Illinois to United States refresh daily.
How many operators does momondo search for flights from Illinois to United States?
There are 10 operators available for flights from Illinois to United States as of April 2026.
How old do you have to be to fly from Illinois to United States?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to United States.
What documentation or ID do you need to fly to United States?
The travel and health documents required for your trip to United States 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 United States. 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 Illinois to United States?
momondo data reveals that the most frequently booked plane model on the route from Illinois to United States is Boeing 737-800, representing 18.17% of all bookings. The subsequent popular models are Airbus A321neo at 17.32%, Boeing 737-900 at 9.14%, and Boeing 737 MAX 8 at 6.92%.

Best airlines flying from Illinois to United States

Compare and see reviews for airlines that fly from Illinois to United States with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $39	Free Cancellation	Rating 5.7 2,993 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $59	Free Cancellation	Rating 6.3 8,616 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $65	Free Cancellation	Rating 7.2 2,932 reviews	Search JetBlue flights
Delta	PriceFrom $82	Free Cancellation	Rating 7.9 8,408 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $84	Free Cancellation	Rating 7.8 2,838 reviews	Search Hawaiian Airlines flights
Allegiant Air	PriceFrom $110	Free Cancellation	Rating 7.3 707 reviews	Search Allegiant Air flights
Breeze Airways	PriceFrom $112	Free Cancellation	Rating 8.1 279 reviews	Search Breeze Airways flights
United Airlines	PriceFrom $117	Free Cancellation	Rating 7.4 9,582 reviews	Search United Airlines flights
American Airlines	PriceFrom $118	Free Cancellation	Rating 7.1 11,571 reviews	Search American Airlines flights
Southwest	PriceFrom $126	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 Illinois to United States?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to United States. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to United States from Illinois which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Illinois to United States?

momondo helps you find the best flight between Illinois and United States by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to United States right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to United States flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Popular cities in the United States

Flights to New Yorkfrom $55

Flights to Los Angelesfrom $48

Flights to Orlandofrom $49

Flights to Miamifrom $56

Flights to Chicagofrom $60

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $48

Flights to Washington, D.C.from $56

Flights to Bostonfrom $66

Flights to Atlantafrom $51

Flights to Dallasfrom $59

Flights to Fort Lauderdalefrom $53

Cheap flights from Illinois to the United States from $45

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to the United States departing on 5/5. 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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Our best United Airlines deals on Illinois to United States flight tickets

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Our best Delta deals on Illinois to United States flight tickets

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How to get the cheapest flight ticket from Illinois to United States

What is the cheapest month to fly to United States?

What is the cheapest day to depart on your flight to United States?

What is the cheapest time of day to depart on your flight to United States?

What is the cheapest Illinois to United States flight route?

How far in advance should I book a flight to United States?

What cabin class options are available on Illinois to United States flights?

Can stopping save me money on Illinois to United States flights?

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

What airlines fly to United States?

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

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

How long is the flight from Illinois to United States?

Cheap Illinois to United States flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in United States

Frequently asked questions about flying from Illinois to the United States

Best airlines flying from Illinois to United States

Compare and see reviews for airlines that fly from Illinois to United States with momondo

Why use momondo?

An easier way to manage your United States 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 the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Illinois flight routes

According to popular flight searches on momondo this year

United States flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to the United States

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to the United States

List of cabin classes available on flights landing in the United States. Availability may vary depending on flight origin and airline.

Complete your trip to the United States

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