HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$70+ Cheap flights from Buffalo (BUF) to Chicago (CHI)

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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Buffalo to Chicago 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 Buffalo to Chicago are usually found in August or September, booked 35 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap flight deals from Buffalo to Chicago

Cheapest flights from Buffalo to Chicago
Explore the most affordable flight options available from Buffalo to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.

This Frontier deal was found by Cheapflights users on 2/2. 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.
Mon 2/231:48 pm
BUF
-
ORD
1 stop9h 51m
Frontier
Thu 2/265:05 am
ORD
-
BUF
1 stop6h 49m
Frontier
Deal found 2/2$147
This Frontier deal was found by Cheapflights users on 2/2. 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.
Mon 2/231:48 pm
BUF
-
MDW
1 stop9h 41m
Frontier
Thu 2/266:25 am
MDW
-
BUF
1 stop5h 29m
Frontier
Deal found 2/2$148
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Mon 2/231:48 pm
BUF
-
MDW
1 stop9h 41m
Frontier
Wed 2/257:00 am
MDW
-
BUF
1 stop28h 54m
Frontier
Deal found 2/3$154
This lastminute.com deal was found by Cheapflights users on 2/3. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:00 am
BUF
-
ORD
1 stop6h 49m
JetBlue
Mon 3/912:41 pm
ORD
-
BUF
1 stop4h 54m
JetBlue
Deal found 2/3$160
This Expedia deal was found by Cheapflights users on 2/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2812:00 pm
BUF
-
ORD
1 stop11h 39m
Multiple Airlines
Tue 3/312:41 pm
ORD
-
BUF
1 stop4h 54m
Multiple Airlines
Deal found 2/5$165
This Mytrip deal was found by Cheapflights users on 2/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/231:48 pm
BUF
-
ORD
1 stop9h 51m
Frontier
Wed 2/258:30 am
ORD
-
BUF
1 stop26h 04m
Frontier
Deal found 2/3$166
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/96:00 am
BUF
-
ORD
1 stop6h 48m
JetBlue
Tue 3/1012:39 pm
ORD
-
BUF
1 stop4h 56m
JetBlue
Deal found 2/3$169
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:00 am
BUF
-
ORD
1 stop6h 49m
JetBlue
Wed 3/412:59 pm
ORD
-
BUF
1 stop4h 47m
JetBlue
Deal found 2/2$170
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Thu 3/51:39 pm
BUF
-
MDW
1 stop9h 50m
Frontier
Thu 3/122:41 pm
MDW
-
BUF
1 stop20h 24m
Frontier
Deal found 2/4$174
This Flysmarter deal was found by Cheapflights users on 2/4. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:00 am
BUF
-
ORD
1 stop6h 48m
JetBlue
Mon 3/912:41 pm
ORD
-
BUF
1 stop4h 54m
JetBlue
Deal found 2/4$174
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Thu 3/51:39 pm
BUF
-
ORD
1 stop10h 00m
Frontier
Sat 3/74:44 pm
ORD
-
BUF
1 stop17h 21m
Frontier
Deal found 2/3$180
This Cheapflightsfares deal was found by Cheapflights users on 2/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:54 am
BUF
-
ORD
1 stop8h 30m
JetBlue
Wed 3/1812:20 pm
ORD
-
BUF
1 stop7h 33m
JetBlue
Deal found 2/4$183

Find flight deals from Buffalo to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Chicago (CHI). 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 February 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$147
(Frontier)

One-way from

$70
(Frontier)

Popular in

February

Cheapest in

August

Average price

$411

Good round-trip deal

$320 or less

Good one-way deal

$183 or less
Provider with most accurate pricing for Buffalo-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Chicago (CHI) flights.
Search Deals
From Buffalo to Chicago (CHI)
Search Deals
One-way flight from Buffalo to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Buffalo to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Buffalo to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Chicago 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 February 6, 2026.
Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.

Fly from

Buffalo

Fly to

Chicago

Route

Depart

Return

Price

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 2/23

1:48 pm-10:39 pm

1 stop9h 51m

Chicago O'Hare Intl

Thu 2/26

5:05 am-12:54 pm

1 stop6h 49m

$147

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 3/6

6:00 am-11:48 am

1 stop6h 48m

Chicago O'Hare Intl

Mon 3/9

12:41 pm-6:35 pm

1 stop4h 54m

$200

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 2/21

3:00 pm-11:26 pm

1 stop9h 26m

Chicago O'Hare Intl

Mon 2/23

6:04 am-2:01 pm

1 stop6h 57m

$235

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 2/18

3:00 pm-11:26 pm

1 stop9h 26m

Chicago O'Hare Intl

Mon 2/23

6:04 am-2:01 pm

1 stop6h 57m

$255

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 2/18

3:00 pm-11:26 pm

1 stop9h 26m

Chicago O'Hare Intl

Thu 2/19

6:04 am-2:17 pm

1 stop7h 13m

$255

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 2/17

3:00 pm-11:26 pm

1 stop9h 26m

Chicago O'Hare Intl

Sat 2/21

6:04 am-2:02 pm

1 stop6h 58m

$255

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 2/17

3:00 pm-11:26 pm

1 stop9h 26m

Chicago O'Hare Intl

Thu 2/19

6:04 am-2:17 pm

1 stop7h 13m

$255

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 3/12

12:50 pm-10:39 pm

1 stop10h 49m

Chicago O'Hare Intl

Sun 3/15

5:01 am-11:04 am

1 stop29h 03m

$261

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Tue 3/3

6:20 am-7:20 am

Nonstop2h 00m

Chicago Midway

Tue 3/3

1:50 pm-4:15 pm

Nonstop1h 25m

$267

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 3/3

7:00 am-8:00 am

Nonstop2h 00m

Chicago O'Hare Intl

Wed 3/4

6:10 pm-8:51 pm

Nonstop1h 41m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 40 results
1
2
3
4

Compare providers for flights from Buffalo to Chicago

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Chicago in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Buffalo to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Buffalo 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 Buffalo to Chicago

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

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to Chicago. Price data was last updated on January 30, 2026.

The best time to book flights from Buffalo to Chicago is 35 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 Buffalo to Chicago?

Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $77). Flying from Buffalo to Chicago in December is currently the most expensive (average of $259). 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 BUF to CHI?

Find hourly flight availability from Buffalo to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 6, 2026.

It’s optimal to fly from Buffalo to Chicago in the evening. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Buffalo to Chicago. Price data was last updated on January 31, 2026.

Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Monday 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 Buffalo to Chicago

Explore weekly flight availability from Buffalo to Chicago. 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 February 6, 2026.

The most flights from BUF to CHI are scheduled on a Friday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated February 6, 2026.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Buffalo to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,275 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,275 reviews
Southwest
8.0
Very good
4,275 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,240 reviews
Southwest
8.0
Very good
4,275 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,237 reviews
Southwest
8.0
Very good
4,275 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,053 reviews
Southwest
8.0
Very good
4,275 reviews

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Chicago. 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 from for flights from Buffalo to Chicago?

    Located just 8.3 mi from the city center, Buffalo is the airport most travelers will use when flying to Chicago from Buffalo. Booking flights from Buffalo (BUF) to Chicago should be relatively easy as there are 19 daily outbound flights to Chicago from 4 different airlines.

  • How long is the flight from Buffalo to Chicago?

    There are many flights that can get you from Buffalo to Chicago in 2h. Fly via Frontier, JetBlue, or Southwest to get the fastest option. Airlines will cover a distance of 466 mi. This flight may include one or multiple stops.

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

    Flying on Frontier is currently your cheapest option to Chicago, with prices starting at $92. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $145 and $157, respectively. Frontier is priced at 71% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $77. Users have also found prices from $86 and $112 on Frontier and United Airlines, respectively.

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

    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 Buffalo to Chicago on time: Republic Airways (81%), American Airlines (78%), Gulf Air (77%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $733 for a flight from Buffalo to Chicago. The cheapest flight overall is $117 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $170.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Buffalo to Chicago 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 Buffalo to Chicago?

    Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $77). Flying from Buffalo to Chicago in December is currently the most expensive (average of $259). 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 Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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 Buffalo to Chicago

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

Top 4 airlines flying from Buffalo to Chicago

Discover the top 4 airlines that operate flights from Buffalo to Chicago. 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 February 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$92Average$200FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$145Average$328FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$157Average$323FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$237Average$333FlexibilityNo 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.
Site
©2026 Cheapflights