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

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

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

The number of flights available between Chicago and Buffalo is 212 per week as of August 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

What airlines fly to Buffalo?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Buffalo from Chicago according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Buffalo. Keep in mind that there are 4 different airlines that fly to Buffalo on a routine basis, so you have a few additional options to choose from.

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

As of August 2026, there are 30 flights per day flying from Chicago to Buffalo. The most common time of day flights depart is 9:00PM, with 45% of flights taking off in the evening.

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

Prices for flights from Chicago to Buffalo Airport are updated daily.

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

The number of operators available for flights from Chicago to Buffalo Airport is 4 as of August 2026.

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

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 Chicago to Buffalo Airport.

What documentation or ID do you need to fly to Buffalo Airport?

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

$118 Cheap Flights from Chicago to Buffalo in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago to Buffalo

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:20 am - 12:55 pmORD Chicago O'Hare Intl-BUF Buffalo

5h 35m1 stop Atlanta Hartsfield-Jackson

1:45 pm - 6:23 pmBUF Buffalo-ORD Chicago O'Hare Intl

5h 38m1 stop Atlanta Hartsfield-Jackson

$148Frontier

Wed, Sep 30 - Sat, Oct 3

3:50 pm - 5:45 pmORD Chicago O'Hare Intl-BUF Buffalo

24h 55m1 stop Orlando

1:45 pm - 6:23 pmBUF Buffalo-ORD Chicago O'Hare Intl

5h 38m1 stop Atlanta Hartsfield-Jackson

$148Frontier

Wed, Sep 9 - Sat, Sep 12

7:20 pm - 10:10 pmORD Chicago O'Hare Intl-BUF Buffalo

1h 50mnonstop

6:56 pm - 8:15 pmBUF Buffalo-ORD Chicago O'Hare Intl

2h 19mnonstop

$217American Airlines

Sat, Sep 19 - Sat, Sep 26

7:20 pm - 10:10 pmORD Chicago O'Hare Intl-BUF Buffalo

1h 50mnonstop

6:56 pm - 8:15 pmBUF Buffalo-ORD Chicago O'Hare Intl

2h 19mnonstop

$217American Airlines

Sat, Sep 19 - Sat, Sep 26

6:49 am - 9:28 amORD Chicago O'Hare Intl-BUF Buffalo

1h 39mnonstop

1:51 pm - 2:55 pmBUF Buffalo-ORD Chicago O'Hare Intl

2h 04mnonstop

$217United Airlines

Tue, Sep 8 - Thu, Sep 10

7:55 am - 10:25 amMDW Chicago Midway-BUF Buffalo

1h 30mnonstop

7:30 am - 8:10 amBUF Buffalo-MDW Chicago Midway

1h 40mnonstop

$217Southwest

Thu, Oct 8 - Mon, Oct 12

7:40 am - 10:10 amMDW Chicago Midway-BUF Buffalo

1h 30mnonstop

4:20 pm - 5:00 pmBUF Buffalo-MDW Chicago Midway

1h 40mnonstop

$217Southwest

Sat, Sep 19 - Sat, Sep 26

2:07 pm - 4:56 pmORD Chicago O'Hare Intl-BUF Buffalo

1h 49mnonstop

10:30 am - 11:30 amBUF Buffalo-ORD Chicago O'Hare Intl

2h 00mnonstop

$227United Airlines

Thu, Sep 10 - Tue, Sep 15

3:00 pm - 10:56 pmORD Chicago O'Hare Intl-BUF Buffalo

6h 56m1 stop Fort Lauderdale

7:00 am - 1:45 pmBUF Buffalo-ORD Chicago O'Hare Intl

7h 45m1 stop Fort Lauderdale

$261JetBlue

Fri, Sep 18 - Tue, Sep 29

3:00 pm - 10:56 pmORD Chicago O'Hare Intl-BUF Buffalo

6h 56m1 stop Fort Lauderdale

7:00 am - 1:45 pmBUF Buffalo-ORD Chicago O'Hare Intl

7h 45m1 stop Fort Lauderdale

$261JetBlue

Mon, Sep 14 - Tue, Sep 15

Cheap last minute flights

Enter your travel dates to find the best prices.

10:16 am - 7:06 pmORD Chicago O'Hare Intl-BUF Buffalo

7h 50m1 stop Orlando

12:49 pm - 10:59 pmBUF Buffalo-ORD Chicago O'Hare Intl

11h 10m1 stop Orlando

$300Frontier

Mon, Aug 17 - Sun, Sep 13

7:05 am - 1:53 pmORD Chicago O'Hare Intl-BUF Buffalo

5h 48m1 stop Atlanta Hartsfield-Jackson

6:54 pm - 11:08 pmBUF Buffalo-ORD Chicago O'Hare Intl

29h 14m1 stop Orlando

$321Frontier

Mon, Aug 17 - Wed, Aug 19

12:45 pm - 3:15 pmMDW Chicago Midway-BUF Buffalo

1h 30mnonstop

3:50 pm - 9:00 pmBUF Buffalo-MDW Chicago Midway

6h 10m1 stop Baltimore/Washington

$359Southwest

Wed, Aug 19 - Thu, Sep 10

12:45 pm - 3:15 pmMDW Chicago Midway-BUF Buffalo

1h 30mnonstop

3:50 pm - 10:25 pmBUF Buffalo-MDW Chicago Midway

7h 35m2 stops Baltimore/Washington Nashville Intl

$365Southwest

Wed, Aug 19 - Thu, Sep 10

6:50 am - 9:39 amORD Chicago O'Hare Intl-BUF Buffalo

1h 49mnonstop

7:59 am - 9:10 amBUF Buffalo-ORD Chicago O'Hare Intl

2h 11mnonstop

$414American Airlines

Mon, Aug 17 - Sun, Sep 13

5:00 am - 12:38 pmORD Chicago O'Hare Intl-BUF Buffalo

6h 38m1 stop Philadelphia

7:59 am - 9:10 amBUF Buffalo-ORD Chicago O'Hare Intl

2h 11mnonstop

$424American Airlines

Mon, Aug 17 - Sun, Sep 13

2:07 pm - 4:56 pmORD Chicago O'Hare Intl-BUF Buffalo

1h 49mnonstop

10:30 am - 11:29 amBUF Buffalo-ORD Chicago O'Hare Intl

1h 59mnonstop

$471United Airlines

Sat, Aug 15 - Sat, Aug 29

6:49 am - 9:28 amORD Chicago O'Hare Intl-BUF Buffalo

1h 39mnonstop

10:30 am - 11:29 amBUF Buffalo-ORD Chicago O'Hare Intl

1h 59mnonstop

$471United Airlines

Mon, Aug 17 - Thu, Aug 20

9:35 am - 7:10 pmORD Chicago O'Hare Intl-BUF Buffalo

8h 35m1 stop New York John F Kennedy Intl

6:00 am - 10:11 amBUF Buffalo-ORD Chicago O'Hare Intl

5h 11m1 stop Boston Logan Intl

$663JetBlue

Tue, Aug 18 - Wed, Aug 19

6:00 am - 2:56 pmORD Chicago O'Hare Intl-BUF Buffalo

7h 56m1 stop New York John F Kennedy Intl

6:55 am - 4:17 pmBUF Buffalo-ORD Chicago O'Hare Intl

10h 22m1 stop New York John F Kennedy Intl

$1,262JetBlue

Mon, Aug 17 - Sat, Aug 22

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Southwest flights from Chicago to Buffalo

Our best Southwest deals on Chicago to Buffalo flight tickets

Southwest

Sep 19

MDW7:40 amChicago Midway

1h 30m

BUF10:10 amBuffalo

Sep 26

BUF4:20 pmBuffalo

1h 40m

MDW5:00 pmChicago Midway

$217

Southwest

Sep 19

MDW7:40 amChicago Midway

1h 30m

BUF10:10 amBuffalo

Sep 26

BUF10:50 amBuffalo

6h 55m

1 stop

MDW4:45 pmChicago Midway

$227

Southwest

Sep 9

MDW8:40 amChicago Midway

1h 40m

BUF11:20 amBuffalo

Sep 15

BUF10:35 amBuffalo

1h 35m

MDW11:10 amChicago Midway

$228

American Airlines flights from Chicago to Buffalo

Our best American Airlines deals on Chicago to Buffalo flight tickets

American Airlines

Sep 19

ORD7:20 pmChicago O'Hare Intl

1h 50m

BUF10:10 pmBuffalo

Sep 26

BUF6:56 pmBuffalo

2h 19m

ORD8:15 pmChicago O'Hare Intl

$217

American Airlines

Sep 26

ORD7:20 pmChicago O'Hare Intl

1h 50m

BUF10:10 pmBuffalo

Oct 3

BUF12:09 pmBuffalo

2h 10m

ORD1:19 pmChicago O'Hare Intl

$226

American Airlines

Aug 19

ORD6:50 amChicago O'Hare Intl

1h 49m

BUF9:39 amBuffalo

Sep 1

BUF10:30 amBuffalo

2h 05m

ORD11:35 amChicago O'Hare Intl

$349

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Wed 9/30

6:20 am-12:55 pm

1 stop5h 35m

Buffalo

Sat 10/3

1:45 pm-6:23 pm

1 stop5h 38m

$148

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Wed 9/9

3:50 pm-5:45 pm

1 stop24h 55m

Buffalo

Sat 9/12

1:45 pm-6:23 pm

1 stop5h 38m

$148

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Sat 9/19

7:20 pm-10:10 pm

Nonstop1h 50m

Buffalo

Sat 9/26

6:56 pm-8:15 pm

Nonstop2h 19m

$217

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Sat 9/19

7:20 pm-10:10 pm

Nonstop1h 50m

Buffalo

Sat 9/26

6:56 pm-8:15 pm

Nonstop2h 19m

$217

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Tue 9/8

6:49 am-9:28 am

Nonstop1h 39m

Buffalo

Thu 9/10

1:51 pm-2:55 pm

Nonstop2h 04m

$217

Quickest round-trip

ChicagoBuffalo

MDW Chicago Midway - BUF Buffalo

MDWBUF

Chicago Midway

Thu 10/8

7:55 am-10:25 am

Nonstop1h 30m

Buffalo

Mon 10/12

7:30 am-8:10 am

Nonstop1h 40m

$217

ChicagoBuffalo

MDW Chicago Midway - BUF Buffalo

MDWBUF

Chicago Midway

Sat 9/19

7:40 am-10:10 am

Nonstop1h 30m

Buffalo

Sat 9/26

4:20 pm-5:00 pm

Nonstop1h 40m

$217

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Thu 9/10

2:07 pm-4:56 pm

Nonstop1h 49m

Buffalo

Tue 9/15

10:30 am-11:30 am

Nonstop2h 00m

$227

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Fri 9/18

3:00 pm-10:56 pm

1 stop6h 56m

Buffalo

Tue 9/29

7:00 am-1:45 pm

1 stop7h 45m

$261

ChicagoBuffalo

ORD Chicago O'Hare Intl - BUF Buffalo

ORDBUF

Chicago O'Hare Intl

Mon 9/14

3:00 pm-10:56 pm

1 stop6h 56m

Buffalo

Tue 9/15

7:00 am-1:45 pm

1 stop7h 45m

$261

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 Chicago to Buffalo

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 typical price of a round-trip flight between Chicago and Buffalo?

Prices are currently low for flights on this route.

Typical prices usually range from $387 to $531.
The lowest price recently found on this route was $148.

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of January, then book flights to Buffalo from Chicago during September instead. Flights to Buffalo in September, while not as cheap as those in January, still average around $323.

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

Our data shows that Saturday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $349. Flights from Chicago to Buffalo on a Monday will generally be more expensive and average around $484. 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 Buffalo?

In the evening is the cheapest time of day to fly from Chicago to Buffalo when you can find flight prices for as low as $369. Flying to Buffalo in the evening is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Buffalo, so prices are often more expensive at around $445 per ticket.

What is the cheapest Chicago to Buffalo flight route?

Fly from Chicago O'Hare Intl to Buffalo for the best Chicago - Buffalo flight prices

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

You are more likely to see cheaper flights to Buffalo from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Buffalo for around $373 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buffalo from Chicago for as low as $248 on momondo.

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

There are 4 cabin classes available to choose from on Chicago to Buffalo flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to Buffalo flight prices changed over time?

As of August 2026, prices for Chicago to Buffalo flights are approximately 93% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to Buffalo

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

Estimated round-trip price

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

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

Best Price Found	$173
Fastest flight time	1h 25m
Direct flights	Every day
Airports in Buffalo	1 airport

The best one-way flight to Buffalo from Chicago in the past 72 hours is $173. The best round-trip flight deal from Chicago to Buffalo found on momondo in the last 72 hours is $307.

The fastest flight from Chicago to Buffalo takes 1h 25m

Direct flights go from Chicago to Buffalo every day.

There is 1 airport in Buffalo. From Chicago there are direct flights to Buffalo (BUF).

Search flight deals

Frequently asked questions about flying from Chicago to Buffalo

How far is Chicago to Buffalo by plane?
A flight from Chicago to Buffalo will travel around 451.4 mi. In terms of flight time, this usually takes a little over 1h 25m.
When did momondo last update prices for flights from Chicago to Buffalo Airport?
Prices for flights from Chicago to Buffalo Airport are updated daily.
How many operators does momondo search for flights from Chicago to Buffalo Airport?
The number of operators available for flights from Chicago to Buffalo Airport is 4 as of August 2026.
How old do you have to be to fly from Chicago to Buffalo Airport?
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 Chicago to Buffalo Airport.
What documentation or ID do you need to fly to Buffalo Airport?
The travel and health documents you'll need for your trip to Buffalo Airport 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 Buffalo Airport. 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 Chicago to Buffalo?
momondo data reveals that the most frequently booked plane model on the route from Chicago to Buffalo is Airbus A319, representing 18.97% of all bookings. The subsequent popular models are Boeing 737-800 at 13.53%, Embraer 175 at 13.53%, and Canadair (Bombardier) Regional Jet CRJ-550 at 12.52%.
What is the most popular airline from Chicago to Buffalo?
momondo data reveals that the most frequently booked airline on the route from Chicago to Buffalo is American Airlines, representing 35% of all bookings. The subsequent popular airlines are United Airlines at 30%, Southwest at 24%, and Frontier at 7%.

Best airlines flying from Chicago to Buffalo

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

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $98	Free Cancellation	Rating 7.1 3,037 reviews	Search JetBlue flights
United Airlines	PriceFrom $217	Free Cancellation	Rating 7.4 10,109 reviews	Search United Airlines flights
American Airlines	PriceFrom $237	Free Cancellation	Rating 7.1 11,928 reviews	Search American Airlines flights
Southwest	PriceFrom $249	Free Cancellation	Rating 8.0 4,220 reviews	Search Southwest flights

Southwest Flights From Chicago to Buffalo
The lowest priced Southwest flight from Chicago to Buffalo from the last 72 hours was $249. Generally, Southwest has 15 flights on this route every week with an average price of $425. Southwest is rated 8.0/10 by our users.
United Airlines Flights From Chicago to Buffalo
United Airlines is also a popular choice for this route. United Airlines flight deals for Chicago to Buffalo start from as low as $217 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $396. United Airlines operates 24 flights to Buffalo from Chicago in an average week. Users have rated it 7.4/10 across 10,109 reviews.

Batavia

Cheektowaga

Amherst

Tonawanda

Williamsville

Orchard Park

Grand Island

Bowmansville

West Seneca

Lockport

East Aurora

Angola

Why use momondo?

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

Finding the right flight to Buffalo from Chicago is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buffalo quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to Buffalo from Chicago. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Buffalo from Chicago 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 Buffalo trip

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Cheap flights from Chicago to Buffalo from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Buffalo departing on 9/10. 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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Southwest flights from Chicago to Buffalo

Our best Southwest deals on Chicago to Buffalo flight tickets

American Airlines flights from Chicago to Buffalo

Our best American Airlines deals on Chicago to Buffalo flight tickets

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See travel insights to Buffalo from

How to get the cheapest flight ticket from Chicago to Buffalo

What is the typical price of a round-trip flight between Chicago and Buffalo?

What is the cheapest month to fly to Buffalo?

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

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

What is the cheapest Chicago to Buffalo flight route?

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

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

How have Chicago to Buffalo flight prices changed over time?

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

What airlines fly to Buffalo?

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

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

When to book flights from Chicago to Buffalo

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

Best Price Found

Fastest flight time

Direct flights

Airports in Buffalo

Frequently asked questions about flying from Chicago to Buffalo

Best airlines flying from Chicago to Buffalo

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

Traveling to a place near Buffalo?

Why use momondo?

An easier way to manage your Buffalo 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

Airports servicing New York

Fly your favorite airline to Buffalo

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

Cabin classes currently available on flights to Buffalo

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

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

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