HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buffalo

$59+ Cheap flights from Chicago (CHI) to Buffalo (BUF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Buffalo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Chicago to Buffalo are usually found in September or June, booked 72 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Chicago to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Buffalo (BUF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$170
(Kiwi.com)

One-way from

$59
(Southwest)

Popular in

January

Cheapest in

September

Average price

$291

Good round-trip deal

$217 or less

Good one-way deal

$181 or less
From Chicago (CHI) to Buffalo
Search Deals
One-way flight from Chicago (CHI) to Buffalo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Buffalo.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Buffalo.
Search Deals

Find flight deals from Chicago to Buffalo

Cheapest flights from Chicago to Buffalo
Explore the most affordable flight options available from Chicago to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:45 amMDW - BUF
2 stops7h 25mSouthwest
Thu 10/304:15 pmBUF - MDW
1 stop5h 20mSouthwest
Deal found 9/11$174
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:50 pmORD - BUF
1 stop7h 25mSouthwest
Wed 10/225:30 amBUF - ORD
1 stop7h 20mSouthwest
Deal found 9/10$175
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:23 pmMDW - BUF
1 stop6h 16mDelta
Sun 10/126:20 amBUF - MDW
1 stop3h 20mDelta
Deal found 9/11$177
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/114:56 pmORD - BUF
1 stop4h 56mDelta
Sun 10/1212:49 pmBUF - ORD
1 stop6h 25mDelta
Deal found 9/11$177
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:50 amORD - BUF
1 stop8h 39mFrontier
Mon 10/205:24 pmBUF - ORD
1 stop8h 35mFrontier
Deal found 9/9$178
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:49 pmORD - BUF
1 stop20h 25mFrontier
Mon 9/224:58 pmBUF - ORD
1 stop8h 01mFrontier
Deal found 9/10$182
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:00 amORD - BUF
1 stop9h 14mFrontier
Fri 10/34:57 pmBUF - ORD
1 stop8h 02mFrontier
Deal found 9/11$184
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/218:01 amORD - BUF
Nonstop1h 41mAmerican Airlines
Wed 10/226:07 amBUF - ORD
1 stop8h 45mAmerican Airlines
Deal found 9/11$185
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:10 amMDW - BUF
Nonstop1h 30mSouthwest
Fri 10/316:30 amBUF - MDW
Nonstop1h 40mSouthwest
Deal found 9/11$186
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1811:36 amORD - BUF
1 stop6h 10mFrontier
Mon 9/224:58 pmBUF - ORD
1 stop8h 01mFrontier
Deal found 9/10$186
This Booking.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/292:06 pmMDW - BUF
1 stop22h 31mFrontier
Fri 10/312:42 pmBUF - MDW
1 stop8h 03mFrontier
Deal found 9/11$187
This Frontier deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:20 amMDW - BUF
1 stop6h 27mFrontier
Sun 11/22:42 pmBUF - MDW
1 stop8h 21mFrontier
Deal found 9/8$189

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Chicago to Buffalo that are best for you.

Fly from

Chicago

Fly to

Buffalo

Route

Depart

Return

Price

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Wed 10/29

1:15 pm-10:15 pm

2 stops8h 00m

Buffalo

Thu 10/30

4:15 pm-8:35 pm

1 stop5h 20m

$174

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 10/21

1:50 pm-10:15 pm

1 stop7h 25m

Buffalo

Wed 10/22

5:30 am-11:50 am

1 stop7h 20m

$175

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Sat 10/11

4:23 pm-11:39 pm

1 stop6h 16m

Buffalo

Sun 10/12

6:20 am-8:40 am

1 stop3h 20m

$177

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 10/21

7:10 am-9:53 am

Nonstop1h 43m

Buffalo

Wed 10/22

7:07 am-8:05 am

Nonstop1h 58m

$177

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Wed 10/8

6:23 pm-10:52 pm

1 stop3h 29m

Buffalo

Wed 10/15

6:20 am-8:40 am

1 stop3h 20m

$177

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 10/8

7:10 am-9:53 am

Nonstop1h 43m

Buffalo

Sat 10/11

1:57 pm-2:55 pm

Nonstop1h 58m

$177

ChicagoBuffalo

MDW - BUF

MDWBUF

Chicago Midway

Fri 10/24

9:35 am-3:16 pm

1 stop4h 41m

Buffalo

Sun 10/26

6:20 am-8:40 am

1 stop3h 20m

$177

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Tue 10/21

8:55 am-3:16 pm

1 stop5h 21m

Buffalo

Wed 10/22

12:49 pm-4:11 pm

1 stop4h 22m

$177

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 10/29

6:00 am-1:47 pm

1 stop6h 47m

Buffalo

Fri 10/31

7:30 pm-11:59 pm

1 stop5h 29m

$177

ChicagoBuffalo

ORD - BUF

ORDBUF

Chicago O'Hare Intl

Wed 10/8

10:35 am-5:02 pm

1 stop5h 27m

Buffalo

Wed 10/15

3:56 pm-8:23 pm

1 stop5h 27m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 42 results
1
2
3
...
5

Best time to book a flight from Chicago to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Buffalo

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Buffalo. Price data was last updated on August 29, 2025.

The best time to book flights from Chicago to Buffalo is 72 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Chicago to Buffalo?

Currently, January is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $256). Flying from Chicago to Buffalo in December is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to BUF?

Find hourly flight availability from Chicago to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 7% on flights from Chicago to Buffalo by exploring options for tickets in the evening.

What is the cheapest day to fly from Chicago to Buffalo?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Buffalo. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Chicago to Buffalo flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to Buffalo

Explore weekly flight availability from Chicago to Buffalo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from CHI to BUF are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buffalo. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Chicago to Buffalo, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Chicago to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Buffalo from Chicago?

    Located just 8.3 mi from the city center, Buffalo is the airport most travelers will use when flying to Buffalo from Chicago. Booking flights from Chicago to Buffalo (BUF) should be relatively easy as there are 27 daily inbound flights from Chicago from 4 different airlines.

  • How long is the flight from Chicago to Buffalo?

    Southwest, Delta, and United Airlines can get you from Chicago to Buffalo in just under 1h 43m. Your travel time can differ by up to 6h 17m. There are 472 mi between Chicago and Buffalo. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Chicago to Buffalo round-trip?

    Flying on Frontier is currently your cheapest option to Buffalo, with prices starting at $128. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $177 and $198, respectively. Frontier is currently priced 62% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Chicago to Buffalo one-way?

    $59 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Southwest, with prices starting from $59 and $70, respectively.

  • What are the most reliable airlines from Chicago to Buffalo?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Buffalo on time: Republic Airways (96%), GoJet (85%), United Airlines (83%).

  • What are the cheapest flights from Chicago to Buffalo?

    On average you can expect to pay $289 for a flight from Chicago to Buffalo. The cheapest flight overall is $107 while the most popular route, (Chicago O'Hare Intl - Buffalo) is currently priced at $117.

  • Can I find deals for flights from Chicago to Buffalo that include hotel bookings?

    Yes. In addition to deals on Chicago to Buffalo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Buffalo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Buffalo.

  • Can I find deals for business class flights from Chicago to Buffalo?

    Yes. Cheapflights offers flight deals from Chicago to Buffalo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from Chicago to Buffalo (average of $256). Flying from Chicago to Buffalo in December is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Lockport
Orchard Park
Batavia
Williamsville
Eden
Amherst
West Seneca

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Buffalo

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to John F Kennedy Intl flights
O'Hare Intl to LaGuardia flights
O'Hare Intl to Newark flights
Midway to LaGuardia flights
Midway to John F Kennedy Intl flights
St. Louis to John F Kennedy Intl flights
St. Louis to LaGuardia flights
Midway to Newark flights
St. Louis to Newark flights
O'Hare Intl to Buffalo flights
O'Hare Intl to Syracuse flights
O'Hare Intl to Albany flights
O'Hare Intl to Rochester flights
O'Hare Intl to White Plains flights
Midway to Buffalo flights
Midway to White Plains flights
Midway to Rochester flights
Midway to Syracuse flights
O'Hare Intl to Islip flights
O'Hare Intl to Ithaca flights
Peoria to Newark flights
Midway to Albany flights
Moline to Newark flights
Moline to John F Kennedy Intl flights
Moline to LaGuardia flights
St. Louis to Syracuse flights
St. Louis to Buffalo flights
Peoria to LaGuardia flights
St. Louis to Albany flights
Peoria to Buffalo flights
O'Hare Intl to Elmira flights
O'Hare Intl to Stewart flights
St. Louis to Rochester flights
St. Louis to White Plains flights
Champaign to LaGuardia flights
Peoria to John F Kennedy Intl flights
Bloomington to Newark flights
Bloomington to John F Kennedy Intl flights
Evansville to John F Kennedy Intl flights
Champaign to John F Kennedy Intl flights
Champaign to Newark flights
Evansville to LaGuardia flights
Peoria to Albany flights
Moline to Rochester flights
Evansville to Newark flights
St. Louis to Stewart flights
St. Louis to Ithaca flights
Bloomington to LaGuardia flights
Midway to Ithaca flights

Top 4 airlines flying from Chicago to Buffalo

Discover the top 4 airlines that operate flights from Chicago to Buffalo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$200FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$314FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$198Average$376FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$278Average$405FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.