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

Spirit Airlines, Frontier, and American Airlines are the most popular carriers operating from United States to Chicago

What airlines fly to Chicago?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Chicago from United States according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 12 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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

As of October 2025, 2,322 flights take off from United States and land in Chicago each week. The most common flight departure day for this route is Thu, with 26% of weekly flights taking off on this day.

How long does it take to fly to Chicago?

Average flight duration from United States to Chicago depends on which airport you fly into and out of. Flying from New York to Chicago O'Hare Intl Airport is 2h 45m on average, while flying from Boston to Chicago O'Hare Intl Airport is 2h 49m on average. Chicago O'Hare Intl Airport is the most popular airport in Chicago.

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

As of October 2025, 331 flights take off from United States and land in Chicago each day. The most common flight departure time for this route is 2:00PM, with 44% of daily flights taking off at noon.

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

Prices for flights from United States to Chicago are updated daily.

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

The number of operators available for flights from United States to Chicago is 11 as of October 2025.

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

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 from United States to Chicago.

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

The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$48 Cheap Flights from the United States to Chicago in 2025/26

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Round-trip

One-way

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Direct

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

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9:29 pm - 11:56 pmDFW-ORD

2h 27mnonstop

6:25 pm - 9:22 pmORD-DFW

2h 57mnonstop

$100Frontier

Find Deal

Thu, Nov 20 - Mon, Nov 24

9:54 pm - 12:13 amDFW-MDW

2h 19mnonstop

5:30 am - 8:15 amMDW-DFW

2h 45mnonstop

$100Frontier

Find Deal

Thu, Nov 20 - Sun, Nov 23

5:25 am - 7:43 amDFW-ORD

2h 18mnonstop

9:22 pm - 11:59 pmORD-DFW

2h 37mnonstop

$104Spirit Airlines

Find Deal

Sat, Nov 22 - Sun, Nov 23

7:30 am - 9:56 amDFW-ORD

2h 26mnonstop

4:57 pm - 11:59 pmORD-DFW

7h 02m1 stop

$108Spirit Airlines

Find Deal

Sun, Nov 16 - Wed, Nov 19

7:20 am - 9:02 amLGA-ORD

2h 42mnonstop

6:00 am - 9:07 amORD-LGA

2h 07mnonstop

$121United Airlines

Find Deal

Sat, Dec 13 - Sun, Dec 14

7:00 am - 8:47 amLGA-ORD

2h 47mnonstop

2:47 pm - 6:04 pmORD-LGA

2h 17mnonstop

$123American Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 8

4:15 pm - 5:57 pmLGA-ORD

2h 42mnonstop

7:00 am - 10:07 amORD-LGA

2h 07mnonstop

$125United Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

7:00 am - 8:47 amLGA-ORD

2h 47mnonstop

2:47 pm - 6:04 pmORD-LGA

2h 17mnonstop

$126American Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

6:00 am - 10:00 amEWR-ORD

5h 00m1 stop

5:07 pm - 11:21 pmORD-EWR

5h 14m1 stop

$177Delta

Find Deal

Fri, Dec 5 - Mon, Dec 8

7:35 pm - 12:01 amIAD-ORD

5h 26m1 stop

5:59 pm - 12:12 amORD-IAD

5h 13m1 stop

$177Delta

Find Deal

Fri, Dec 5 - Mon, Dec 8

American Airlines flights from United States to Chicago

Our best American Airlines deals on United States to Chicago flight tickets

American Airlines

Dec 6

LGA7:00 amNew York LaGuardia

2h 47m

ORD8:47 amChicago O'Hare Intl

Dec 8

ORD2:47 pmChicago O'Hare Intl

2h 17m

LGA6:04 pmNew York LaGuardia

$123

Find similar

American Airlines

Dec 5

LGA7:00 amNew York LaGuardia

2h 47m

ORD8:47 amChicago O'Hare Intl

Dec 8

ORD2:47 pmChicago O'Hare Intl

2h 17m

LGA6:04 pmNew York LaGuardia

$126

Find similar

American Airlines

Nov 13

LGA6:00 amNew York LaGuardia

2h 45m

ORD7:45 amChicago O'Hare Intl

Nov 17

ORD2:50 pmChicago O'Hare Intl

2h 07m

LGA5:57 pmNew York LaGuardia

$137

Find similar

United Airlines flights from United States to Chicago

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

United Airlines

Nov 5

LGA5:15 pmNew York LaGuardia

2h 40m

ORD6:55 pmChicago O'Hare Intl

Nov 12

ORD4:00 pmChicago O'Hare Intl

2h 07m

LGA7:07 pmNew York LaGuardia

$117

Find similar

United Airlines

Dec 13

LGA7:20 amNew York LaGuardia

2h 42m

ORD9:02 amChicago O'Hare Intl

Dec 14

ORD6:00 amChicago O'Hare Intl

2h 07m

LGA9:07 amNew York LaGuardia

$121

Find similar

United Airlines

Dec 5

LGA4:15 pmNew York LaGuardia

2h 42m

ORD5:57 pmChicago O'Hare Intl

Dec 8

ORD7:00 amChicago O'Hare Intl

2h 07m

LGA10:07 amNew York LaGuardia

$125

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Thu 11/20

9:29 pm-11:56 pm

Nonstop2h 27m

Chicago O'Hare Intl

Mon 11/24

6:25 pm-9:22 pm

Nonstop2h 57m

$100

DallasChicago

DFW - MDW

DFWMDW

Dallas/Fort Worth

Thu 11/20

9:54 pm-12:13 am

Nonstop2h 19m

Chicago Midway

Sun 11/23

5:30 am-8:15 am

Nonstop2h 45m

$100

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Sat 11/22

5:25 am-7:43 am

Nonstop2h 18m

Chicago O'Hare Intl

Sun 11/23

9:22 pm-11:59 pm

Nonstop2h 37m

$104

DallasChicago

DFW - ORD

DFWORD

Dallas/Fort Worth

Sun 11/16

7:30 am-9:56 am

Nonstop2h 26m

Chicago O'Hare Intl

Wed 11/19

4:57 pm-11:59 pm

1 stop7h 02m

$108

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 12/13

7:20 am-9:02 am

Nonstop2h 42m

Chicago O'Hare Intl

Sun 12/14

6:00 am-9:07 am

Nonstop2h 07m

$121

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Sat 12/6

7:00 am-8:47 am

Nonstop2h 47m

Chicago O'Hare Intl

Mon 12/8

2:47 pm-6:04 pm

Nonstop2h 17m

$123

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Fri 12/5

4:15 pm-5:57 pm

Nonstop2h 42m

Chicago O'Hare Intl

Mon 12/8

7:00 am-10:07 am

Nonstop2h 07m

$125

New YorkChicago

LGA - ORD

LGAORD

New York LaGuardia

Fri 12/5

7:00 am-8:47 am

Nonstop2h 47m

Chicago O'Hare Intl

Mon 12/8

2:47 pm-6:04 pm

Nonstop2h 17m

$126

NewarkChicago

EWR - ORD

EWRORD

Newark

Fri 12/5

6:00 am-10:00 am

1 stop5h 00m

Chicago O'Hare Intl

Mon 12/8

5:07 pm-11:21 pm

1 stop5h 14m

$177

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 12/5

7:35 pm-12:01 am

1 stop5h 26m

Chicago O'Hare Intl

Mon 12/8

5:59 pm-12:12 am

1 stop5h 13m

$177

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

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 Chicago?

The month of January is, on average, the cheapest month to fly to Chicago from United States, with most prices found around $186. If you’re not able to fly to Chicago in January, then February is your next best option. Flight prices from United States to Chicago during February average around $189.

What is the cheapest day to depart on your flight to Chicago?

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as $293. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from United States to Chicago for around $385.

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

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from United States to Chicago during this time can be as low as $270. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $366.

What is the cheapest United States to Chicago flight route?

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

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $252 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from United States for as low as $186 on momondo.

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

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

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

Cheap United States to Chicago flight deals and tips

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

Best Price Found	$45
Fastest flight time	2h 03m
Direct flights	Every day
Airports in Chicago	1 airport

The best one-way flight to Chicago from United States in the past 72 hours is $45. The best round-trip flight deal from United States to Chicago found on momondo in the last 72 hours is $53.

The fastest flight from United States to Chicago takes 2h 03m

Direct flights go from United States to Chicago every day.

There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)

Search flight deals

When did momondo last update prices for flights from United States to Chicago?
Prices for flights from United States to Chicago are updated daily.
How many operators does momondo search for flights from United States to Chicago?
The number of operators available for flights from United States to Chicago is 11 as of October 2025.
How old do you have to be to fly from United States to Chicago?
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 from United States to Chicago.
What documentation or ID do you need to fly to Chicago?
The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to Chicago?
Based on momondo bookings for flights between United States and Chicago, the leading plane model is Boeing 737-800, making up 22.80% of the total bookings. Other popular models include Boeing 737-900 with 10.90%, Airbus A321neo with 10.16%, and Boeing 737 MAX 8 with 7.92%.

Best airlines flying from United States to Chicago

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $59	Free Cancellation	Rating 6.3 8,097 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $59	Free Cancellation	Rating 5.8 3,128 reviews	Search Frontier flights
JetBlue	PriceFrom $78	Free Cancellation	Rating 7.2 2,908 reviews	Search JetBlue flights
Allegiant Air	PriceFrom $91	Free Cancellation	Rating 7.2 694 reviews	Search Allegiant Air flights
Delta	PriceFrom $101	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,788 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $117	Free Cancellation	Rating 8.0 4,237 reviews	Search Southwest flights
Sun Country Air	PriceFrom $130	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
United Airlines	PriceFrom $130	Free Cancellation	Rating 7.4 8,991 reviews	Search United Airlines flights
American Airlines	PriceFrom $137	Free Cancellation	Rating 7.2 11,028 reviews	Search American Airlines flights

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Hammond

Benton Harbor

Saint Joseph

Lansing

Portage

Schererville

Valparaiso

Crown Point

Munster

Chesterton

Monticello

Porter

Griffith

Saint John

Why use momondo?

Why should I use momondo to find a flight deal from United States to Chicago?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to Chicago for you.

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

Yes. momondo enables you to select and highlight flights to Chicago from United States with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from United States.

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

Yes momondo offers price alerts on flights to Chicago from United States. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Chicago 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.

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Find better results for your trip to the United States

Cheap flights from the United States to Chicago from $48

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 Chicago departing on 11/11. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from the United States to Chicago

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

Recent one-way flight deals from the United States to Chicago

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American Airlines flights from United States to Chicago

Our best American Airlines deals on United States to Chicago flight tickets

United Airlines flights from United States to Chicago

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

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

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

What is the cheapest month to fly to Chicago?

What is the cheapest day to depart on your flight to Chicago?

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

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from United States to Chicago during this time can be as low as $270. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $366.

What is the cheapest United States to Chicago flight route?

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

How far in advance should I book a flight to Chicago?

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

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

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

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

Spirit Airlines, Frontier, and American Airlines are the most popular carriers operating from United States to Chicago

What airlines fly to Chicago?

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

As of October 2025, 331 flights take off from United States and land in Chicago each day. The most common flight departure time for this route is 2:00PM, with 44% of daily flights taking off at noon.

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

As of October 2025, 2,322 flights take off from United States and land in Chicago each week. The most common flight departure day for this route is Thu, with 26% of weekly flights taking off on this day.

How long does it take to fly to Chicago?

Cheap United States to Chicago flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Chicago

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

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

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

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

What is the most popular plane model from United States to Chicago?

Best airlines flying from United States to Chicago

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

Traveling to a place near Chicago?

Why use momondo?

Why should I use momondo to find a flight deal from United States to Chicago?

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

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

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

An easier way to manage your Chicago 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

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago