What is the cheapest airline that flies from Buffalo to Chicago?

Southwest, Frontier, and Delta are the most popular carriers operating from Buffalo to Chicago

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

As of September 2025, 203 flights take off from Buffalo and land in Chicago each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.

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

The number of flights available between Buffalo and Chicago is 29 per day as of September 2025. The most frequent departure time is 7:00AM, with 56% of daily flights leaving at noon.

What airlines fly to Chicago?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Chicago from Buffalo according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 4 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Buffalo Airport to Chicago?

Prices for flights from Buffalo Airport to Chicago were last updated today.

How many operators does momondo search for flights from Buffalo Airport to Chicago?

As of September 2025, there are 4 operators available to choose from for flights from Buffalo Airport to Chicago.

How old do you have to be to fly from Buffalo Airport to Chicago?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buffalo Airport to Chicago.

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

The travel and health documents you'll need for your trip to Chicago 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 Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$87 Cheap Flights from Buffalo to Chicago in 2025

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Find the cheapest flights from Buffalo to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:16 am - 10:22 amBUF-ORD

5h 06m1 stop

5:45 pm - 11:07 pmORD-BUF

4h 22m1 stop

$176Delta

Find Deal

mar., ene. 20 - mar., feb. 10

6:59 pm - 9:51 amBUF-MDW

15h 52m1 stop

10:13 am - 5:22 pmMDW-BUF

6h 09m1 stop

$177Frontier

Find Deal

vie., sep. 26 - dom., sep. 28

5:30 am - 12:05 pmBUF-MDW

7h 35m2 stops

7:35 am - 4:25 pmMDW-BUF

7h 50m2 stops

$180Southwest

Find Deal

mié., oct. 15 - mar., oct. 21

6:14 am - 7:13 amBUF-ORD

1h 59mnonstop

7:00 am - 5:47 pmORD-BUF

9h 47m1 stop

$188American Airlines

Find Deal

mié., oct. 22 - mié., oct. 29

4:57 pm - 6:00 pmBUF-ORD

2h 03mnonstop

6:30 pm - 9:17 pmORD-BUF

1h 47mnonstop

$193American Airlines

Find Deal

dom., mar. 1 - mar., mar. 3

3:50 pm - 8:55 pmBUF-MDW

6h 05m1 stop

9:45 am - 12:10 pmMDW-BUF

1h 25mnonstop

$209Southwest

Find Deal

sáb., oct. 4 - lun., oct. 6

6:05 am - 10:28 amBUF-ORD

5h 23m1 stop

11:30 am - 10:03 pmORD-BUF

9h 33m1 stop

$221JetBlue

Find Deal

mar., dic. 9 - vie., dic. 12

10:00 am - 6:18 pmBUF-ORD

9h 18m1 stop

1:35 pm - 10:00 pmORD-BUF

7h 25m1 stop

$223JetBlue

Find Deal

mié., oct. 15 - vie., oct. 17

12:15 pm - 9:33 pmBUF-ORD

10h 18m2 stops

1:55 pm - 8:53 pmORD-BUF

5h 58m1 stop

$237

Find Deal

vie., oct. 24 - vie., oct. 31

12:15 pm - 9:33 pmBUF-ORD

10h 18m2 stops

6:50 am - 4:29 pmORD-BUF

8h 39m1 stop

$239

Find Deal

vie., oct. 24 - lun., oct. 27

Delta flights from Buffalo to Chicago

Our best Delta deals on Buffalo to Chicago flight tickets

Delta

Jan 20

BUF6:16 amBuffalo

5h 06m

1 stop

ORD10:22 amChicago O'Hare Intl

Feb 10

ORD5:45 pmChicago O'Hare Intl

4h 22m

1 stop

BUF11:07 pmBuffalo

$176

Find similar

Delta

Oct 4

BUF6:30 pmBuffalo

4h 04m

1 stop

ORD9:34 pmChicago O'Hare Intl

Oct 6

ORD5:51 pmChicago O'Hare Intl

4h 48m

1 stop

BUF11:39 pmBuffalo

$177

Find similar

Delta

Oct 15

BUF3:56 pmBuffalo

5h 27m

1 stop

ORD8:23 pmChicago O'Hare Intl

Oct 21

ORD6:45 amChicago O'Hare Intl

7h 43m

1 stop

BUF3:28 pmBuffalo

$199

Find similar

American Airlines flights from Buffalo to Chicago

Our best American Airlines deals on Buffalo to Chicago flight tickets

American Airlines

Oct 22

BUF6:14 amBuffalo

1h 59m

ORD7:13 amChicago O'Hare Intl

Oct 29

ORD7:00 amChicago O'Hare Intl

9h 47m

1 stop

BUF5:47 pmBuffalo

$188

Find similar

American Airlines

Mar 1

BUF4:57 pmBuffalo

2h 03m

ORD6:00 pmChicago O'Hare Intl

Mar 3

ORD6:30 pmChicago O'Hare Intl

1h 47m

BUF9:17 pmBuffalo

$193

Find similar

American Airlines

Nov 13

BUF7:40 amBuffalo

2h 00m

ORD8:40 amChicago O'Hare Intl

Nov 15

ORD8:36 pmChicago O'Hare Intl

13h 56m

1 stop

BUF11:32 amBuffalo

$201

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mar. 1/20

6:16 am-10:22 am

1 stop5h 06m

Chicago O'Hare Intl

mar. 2/10

5:45 pm-11:07 pm

1 stop4h 22m

$176

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

vie. 9/26

6:59 pm-9:51 am

1 stop15h 52m

Chicago Midway

dom. 9/28

10:13 am-5:22 pm

1 stop6h 09m

$177

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

mié. 10/15

5:30 am-12:05 pm

2 stops7h 35m

Chicago Midway

mar. 10/21

7:35 am-4:25 pm

2 stops7h 50m

$180

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mié. 10/22

6:14 am-7:13 am

Nonstop1h 59m

Chicago O'Hare Intl

mié. 10/29

7:00 am-5:47 pm

1 stop9h 47m

$188

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

dom. 3/1

4:57 pm-6:00 pm

Nonstop2h 03m

Chicago O'Hare Intl

mar. 3/3

6:30 pm-9:17 pm

Nonstop1h 47m

$193

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

sáb. 10/4

3:50 pm-8:55 pm

1 stop6h 05m

Chicago Midway

lun. 10/6

9:45 am-12:10 pm

Nonstop1h 25m

$209

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mar. 12/9

6:05 am-10:28 am

1 stop5h 23m

Chicago O'Hare Intl

vie. 12/12

11:30 am-10:03 pm

1 stop9h 33m

$221

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

mié. 10/15

10:00 am-6:18 pm

1 stop9h 18m

Chicago O'Hare Intl

vie. 10/17

1:35 pm-10:00 pm

1 stop7h 25m

$223

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

vie. 10/24

12:15 pm-9:33 pm

2 stops10h 18m

Chicago O'Hare Intl

vie. 10/31

1:55 pm-8:53 pm

1 stop5h 58m

$237

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

vie. 10/24

12:15 pm-9:33 pm

2 stops10h 18m

Chicago O'Hare Intl

lun. 10/27

6:50 am-4:29 pm

1 stop8h 39m

$239

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 Buffalo 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 August is, on average, the cheapest month to fly to Chicago from Buffalo, with most prices found around $258. If you’re not able to fly to Chicago in August, then September is your next best option. Flight prices from Buffalo to Chicago during September average around $284.

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 Friday when prices can be found for as low as $431. 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 Buffalo to Chicago for around $519.

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 Buffalo to Chicago during this time can be as low as $426. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $651.

What is the cheapest Buffalo to Chicago flight route?

Fly from Buffalo to Chicago Midway for the best Buffalo - 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 Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $340 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Buffalo for as low as $223 on momondo.

What cabin class options are available on Buffalo to Chicago flights?

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

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

How have Buffalo to Chicago flight prices changed over time?

As of September 2025, prices for Buffalo to Chicago flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Buffalo to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Buffalo to Chicago (BUF to CHI) flight deals and tips

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

Best Price Found	$167
Fastest flight time	1h 35m
Direct flights	Every day
Airports in Chicago	2 airports

The best one-way flight to Chicago from Buffalo in the past 72 hours is $167. The best round-trip flight deal from Buffalo to Chicago found on momondo in the last 72 hours is $269.

The fastest flight from Buffalo to Chicago takes 1h 35m

Direct flights go from Buffalo to Chicago every day.

There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

How far is Buffalo to Chicago by plane?
A flight from Buffalo to Chicago will travel around 451.4 mi. Flights usually cover this in 1h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Buffalo Airport to Chicago?
Prices for flights from Buffalo Airport to Chicago were last updated today.
How many operators does momondo search for flights from Buffalo Airport to Chicago?
As of September 2025, there are 4 operators available to choose from for flights from Buffalo Airport to Chicago.
How old do you have to be to fly from Buffalo Airport to Chicago?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buffalo Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents you'll need for your trip to Chicago 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 Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Buffalo to Chicago?
momondo data reveals that the most frequently booked plane model on the route from Buffalo to Chicago is Boeing 737-800, representing 17.38% of all bookings. The subsequent popular models are Airbus A319 at 10.16%, Boeing 737-900 at 9.75%, and Canadair (Bombardier) Regional Jet CRJ-550 at 9.62%.
What is the most popular airline from Buffalo to Chicago?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Buffalo to Chicago is American Airlines (37% of total bookings). The next most popular airlines are United Airlines (30%), Southwest (26%), and Frontier (6%).

Best airlines flying from Buffalo to Chicago

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $58	Free Cancellation	Rating 5.8 3,177 reviews	Search Frontier flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights
American Airlines	PriceFrom $161	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $259	Free Cancellation	Rating 8.0 4,248 reviews	Search Southwest flights

Southwest Flights From Buffalo to Chicago
Southwest is one of the most popular airlines flying from Buffalo to Chicago, operating 15 flights/week on average for this route. A good Southwest flight deal for Buffalo to Chicago starts from $259 round-trip, up to an average price of $343. Our users have rated Southwest at 8.0/10.
United Airlines Flights From Buffalo to Chicago
United Airlines (7.4/10 from 8,937 reviews) operates around 28 flights from Buffalo to Chicago in any given week. The average United Airlines airfare for this route is around $371, with deals from around $157 rare but found on momondo. Referenced prices are for round-trip Buffalo to Chicago flight searches in the last 72 hours.

Merrillville

New Buffalo

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 Buffalo to Chicago?

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

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

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

How can momondo help me find flights from Buffalo to Chicago?

Once all potential Buffalo to Chicago 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 from Buffalo to Chicago right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Buffalo and alert you when they 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

Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

Chicago Greater Rockford Airport

Popular cities in the United States

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Flights to Denverfrom $51

Cheap flights from Buffalo to Chicago from $87

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Chicago departing on 2/21. 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 Buffalo to Chicago

Cheap round-trip flights

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Cheap last minute flights

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Delta flights from Buffalo to Chicago

Our best Delta deals on Buffalo to Chicago flight tickets

American Airlines flights from Buffalo to Chicago

Our best American Airlines deals on Buffalo to Chicago flight tickets

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Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Buffalo 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?

The month of August is, on average, the cheapest month to fly to Chicago from Buffalo, with most prices found around $258. If you’re not able to fly to Chicago in August, then September is your next best option. Flight prices from Buffalo to Chicago during September average around $284.

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 Buffalo to Chicago during this time can be as low as $426. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $651.

What is the cheapest Buffalo to Chicago flight route?

Fly from Buffalo to Chicago Midway for the best Buffalo - Chicago flight prices

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

What cabin class options are available on Buffalo to Chicago flights?

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

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

How have Buffalo to Chicago flight prices changed over time?

As of September 2025, prices for Buffalo to Chicago flights are approximately 2% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Buffalo to Chicago?

Southwest, Frontier, and Delta are the most popular carriers operating from Buffalo to Chicago

What airlines fly to Chicago?

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

The number of flights available between Buffalo and Chicago is 29 per day as of September 2025. The most frequent departure time is 7:00AM, with 56% of daily flights leaving at noon.

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

As of September 2025, 203 flights take off from Buffalo and land in Chicago each week. The most common flight departure day for this route is Wed, with 16% of weekly flights taking off on this day.

When to book flights from Buffalo to Chicago

Cheap Buffalo to Chicago (BUF to CHI) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Chicago

How far is Buffalo to Chicago by plane?

When did momondo last update prices for flights from Buffalo Airport to Chicago?

How many operators does momondo search for flights from Buffalo Airport to Chicago?

How old do you have to be to fly from Buffalo Airport to Chicago?

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

What is the most popular plane model from Buffalo to Chicago?

What is the most popular airline from Buffalo to Chicago?

Best airlines flying from Buffalo to Chicago

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

Southwest Flights From Buffalo to Chicago

United Airlines Flights From Buffalo to Chicago

Traveling to a place near Chicago?

Why use momondo?

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

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

How can momondo help me find flights from Buffalo to Chicago?

I’m not ready to book a flight from Buffalo 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