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$96+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Find cheap flights from Buffalo to Chicago with Cheapflights

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Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in September or February, booked 35 days in advance, depart on a Thursday or Saturday and return on a Saturday

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 July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/22. 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 9/181:16 pm
BUF
-
ORD
1 stop23h 46m
Frontier
Mon 9/212:03 pm
ORD
-
BUF
1 stop21h 18m
Frontier
Deal found 7/22$254
This Frontier deal was found by Cheapflights users on 7/21. 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 8/142:48 pm
BUF
-
MDW
1 stop8h 15m
Frontier
Mon 8/176:05 am
MDW
-
BUF
1 stop6h 48m
Frontier
Deal found 7/21$255
This Expedia deal was found by Cheapflights users on 7/22. 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.
Thu 9/172:30 pm
BUF
-
ORD
1 stop5h 52m
Multiple Airlines
Sun 9/209:26 am
ORD
-
BUF
1 stop7h 08m
Multiple Airlines
Deal found 7/22$255
This Frontier deal was found by Cheapflights users on 7/19. 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.
Sat 9/511:36 am
BUF
-
ORD
1 stop9h 32m
Frontier
Sun 9/67:44 pm
ORD
-
BUF
1 stop21h 25m
Frontier
Deal found 7/19$256
This Southwest deal was found by Cheapflights users on 7/22. 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.
Thu 9/39:40 am
BUF
-
MDW
2 stops6h 15m
Southwest
Sun 9/66:30 pm
MDW
-
BUF
Nonstop1h 30m
Southwest
Deal found 7/22$257
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Thu 8/206:00 am
BUF
-
ORD
1 stop5h 30m
American Airlines
Mon 8/245:55 pm
ORD
-
BUF
1 stop4h 41m
American Airlines
Deal found 7/22$257
This Southwest deal was found by Cheapflights users on 7/21. 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 10/276:15 am
BUF
-
MDW
2 stops9h 10m
Southwest
Thu 10/297:25 am
MDW
-
BUF
1 stop3h 35m
Southwest
Deal found 7/21$258
This JetBlue deal was found by Cheapflights users on 7/21. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:00 am
BUF
-
ORD
1 stop7h 20m
JetBlue
Fri 10/302:15 pm
ORD
-
BUF
1 stop5h 09m
JetBlue
Deal found 7/21$258
This Priceline deal was found by Cheapflights users on 7/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:32 pm
BUF
-
ORD
1 stop7h 26m
Multiple Airlines
Mon 9/79:10 pm
ORD
-
BUF
1 stop11h 13m
Multiple Airlines
Deal found 7/18$259
This Frontier deal was found by Cheapflights users on 7/19. 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 9/181:16 pm
BUF
-
ORD
1 stop7h 28m
Frontier
Sun 9/209:26 am
ORD
-
BUF
1 stop7h 08m
Frontier
Deal found 7/19$260
This Southwest deal was found by Cheapflights users on 7/22. 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.
Thu 8/136:30 am
BUF
-
MDW
2 stops9h 00m
Southwest
Mon 8/1710:30 am
MDW
-
BUF
1 stop6h 55m
Southwest
Deal found 7/22$262
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 9/36:09 pm
BUF
-
ORD
Nonstop2h 18m
American Airlines
Sun 9/66:00 am
ORD
-
BUF
1 stop4h 29m
American Airlines
Deal found 7/20$263

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$254
(Kiwi.com)

One-way from

$96
(lol.travel)

Popular in

March

Cheapest in

September

Average price

$389

Good round-trip deal

$369 or less

Good one-way deal

$208 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. 5% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 23, 2026.
Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 9/17

11:25 am-4:15 pm

1 stop5h 50m

Chicago Midway

Sat 9/19

7:40 am-10:10 am

Nonstop1h 30m

$279

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 9/3

4:35 pm-10:40 pm

1 stop7h 05m

Chicago Midway

Mon 9/7

8:05 am-10:45 am

Nonstop1h 40m

$279

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Sat 8/15

5:45 am-1:05 pm

2 stops8h 20m

Chicago Midway

Wed 8/19

7:40 am-5:45 pm

2 stops9h 05m

$283

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Fri 9/11

3:55 pm-10:20 pm

2 stops7h 25m

Chicago Midway

Sat 9/12

9:55 am-9:05 pm

2 stops10h 10m

$283

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 9/23

12:00 pm-3:50 pm

1 stop4h 50m

Chicago Midway

Sat 9/26

9:05 am-5:35 pm

2 stops7h 30m

$294

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 8/21

5:58 pm-7:00 pm

Nonstop2h 02m

Chicago O'Hare Intl

Mon 8/24

6:15 pm-9:07 pm

Nonstop1h 52m

$298

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 9/5

6:55 am-7:55 am

Nonstop2h 00m

Chicago O'Hare Intl

Sun 9/6

2:07 pm-4:56 pm

Nonstop1h 49m

$308

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Mon 9/21

7:10 pm-7:45 pm

Nonstop1h 35m

Chicago Midway

Fri 9/25

3:15 pm-10:15 pm

1 stop6h 00m

$308
Quickest round-trip

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Thu 9/17

7:10 pm-7:45 pm

Nonstop1h 35m

Chicago Midway

Sun 9/20

8:10 am-10:50 am

Nonstop1h 40m

$318

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 8/30

6:00 am-10:58 am

1 stop5h 58m

Chicago O'Hare Intl

Wed 9/2

6:15 pm-9:07 pm

Nonstop1h 52m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 40 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*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

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

Currently, January is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $278). Flying from Buffalo to Chicago in March is currently the most expensive (average of $436). 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 July 23, 2026.

It’s optimal to fly from Buffalo to Chicago in the afternoon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight at noon.

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 July 23, 2026.

The most flights from BUF to CHI are scheduled on a Tuesday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

How much does it cost to fly round-trip from Buffalo to Chicago?

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

The best time to book flights from Buffalo to Chicago is 34 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 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 July 18, 2026.

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

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 July 23, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican 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
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
United Airlines
7.4
Good
10,024 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
American Airlines
7.1
Good
11,830 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
JetBlue
7.1
Good
3,019 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers
Frontier
5.6
Fair
2,770 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Reza,Jun 2026

TPA - MDW

The seats were super cramped and couldn’t move without hitting other passengers

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 36 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 02m. Fly via Southwest or United Airlines to get the fastest option. Airlines will cover a distance of 472 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 American Airlines and United Airlines, with the lowest prices starting at $145 and $232, respectively. Frontier is priced at 72% 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 $98 and $118 on JetBlue 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: Japan Airlines (93%), Copa Airlines (90%), SkyWest Airlines (88%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $1,782 for a flight from Buffalo to Chicago. The cheapest flight overall is $119 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $208.

  • 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, January is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $278). Flying from Buffalo to Chicago in March is currently the most expensive (average of $436). 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
Benton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter

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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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$92Average$202FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$145Average$344FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$232Average$351FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$237Average$369FlexibilityNo cancel feeOn-time63%

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