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$79+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
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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”
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Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in September or August, booked 80 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap 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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$261
(American Airlines)

One-way from

$79
(Frontier)

Popular in

March

Cheapest in

September

Average price

$359

Good round-trip deal

$339 or less

Good one-way deal

$171 or less
Provider with most accurate pricing for Buffalo-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Buffalo-Chicago (CHI) flights.
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From Buffalo to Chicago (CHI)
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One-way flight from Buffalo to Chicago (CHI)
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Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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).
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Find 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 March 31, 2025.

This American Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 5/245:10 amBUF - ORD
Nonstop1h 55mAmerican Airlines
Sun 5/257:50 amORD - BUF
1 stop4h 22mAmerican Airlines
Deal found 3/30$261
This Mytrip deal was found by Cheapflights users on 3/30. 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.
Fri 4/112:48 pmBUF - ORD
1 stop10h 48mFrontier
Mon 4/145:19 pmORD - BUF
1 stop20h 36mFrontier
Deal found 3/30$267
This Booking.com deal was found by Cheapflights users on 3/30. 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.
Fri 4/115:09 pmBUF - MDW
1 stop27h 38mFrontier
Mon 4/141:23 pmMDW - BUF
1 stop20h 01mFrontier
Deal found 3/30$268
This JetBlue deal was found by Cheapflights users on 3/30. 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.
Mon 5/53:05 pmBUF - ORD
1 stop8h 17mJetBlue
Wed 5/76:15 amORD - BUF
1 stop6h 38mJetBlue
Deal found 3/30$269
This Priceline deal was found by Cheapflights users on 3/30. 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.
Thu 6/1211:46 amBUF - ORD
1 stop8h 25mMultiple Airlines
Sun 6/155:10 amORD - BUF
1 stop8h 39mMultiple Airlines
Deal found 3/30$275
This Southwest deal was found by Cheapflights users on 3/30. 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.
Mon 5/56:25 amBUF - MDW
Nonstop1h 40mSouthwest
Wed 5/71:00 pmMDW - BUF
Nonstop1h 25mSouthwest
Deal found 3/30$285
This Delta deal was found by Cheapflights users on 3/30. 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.
Wed 4/3012:05 pmBUF - MDW
1 stop5h 07mDelta
Mon 5/55:59 pmMDW - BUF
1 stop4h 01mDelta
Deal found 3/30$305
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/57:45 pmBUF - ORD
2 stops13h 20mUnited Airlines
Sun 4/610:35 amORD - BUF
Nonstop1h 45mUnited Airlines
Deal found 3/30$309
This Delta deal was found by Cheapflights users on 3/30. 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.
Tue 7/17:00 amBUF - ORD
1 stop6h 51mDelta
Mon 7/75:45 pmORD - BUF
1 stop4h 17mDelta
Deal found 3/30$319
This Southwest deal was found by Cheapflights users on 3/30. 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 4/245:45 amBUF - ORD
2 stops8h 00mSouthwest
Tue 4/291:50 pmORD - BUF
1 stop4h 05mSouthwest
Deal found 3/30$322

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 March 31, 2025.
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

Sat 5/24

5:10 am-6:05 am

Nonstop1h 55m

Chicago O'Hare Intl

Sun 5/25

7:50 am-1:12 pm

1 stop4h 22m

$261

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 4/11

2:48 pm-12:36 am

1 stop10h 48m

Chicago O'Hare Intl

Mon 4/14

5:19 pm-2:55 pm

1 stop20h 36m

$267

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Fri 4/11

5:09 pm-7:47 pm

1 stop27h 38m

Chicago Midway

Mon 4/14

1:23 pm-10:24 am

1 stop20h 01m

$268

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 5/5

3:05 pm-10:22 pm

1 stop8h 17m

Chicago O'Hare Intl

Wed 5/7

6:15 am-1:53 pm

1 stop6h 38m

$269

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 6/12

11:46 am-7:11 pm

1 stop8h 25m

Chicago O'Hare Intl

Sun 6/15

5:10 am-2:49 pm

1 stop8h 39m

$275

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Mon 5/5

6:25 am-7:05 am

Nonstop1h 40m

Chicago Midway

Wed 5/7

1:00 pm-3:25 pm

Nonstop1h 25m

$285

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 4/30

12:05 pm-4:12 pm

1 stop5h 07m

Chicago Midway

Mon 5/5

5:59 pm-11:00 pm

1 stop4h 01m

$305

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 7/1

7:00 am-12:51 pm

1 stop6h 51m

Chicago O'Hare Intl

Mon 7/7

5:45 pm-11:02 pm

1 stop4h 17m

$319

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 4/24

5:45 am-12:45 pm

2 stops8h 00m

Chicago O'Hare Intl

Tue 4/29

1:50 pm-6:55 pm

1 stop4h 05m

$322

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 5/23

7:00 am-7:56 am

Nonstop1h 56m

Chicago O'Hare Intl

Mon 5/26

6:20 pm-9:01 pm

Nonstop1h 41m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 22 results
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
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.

The best insider tips for Buffalo to Chicago flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Buffalo to Chicago trip
Airlines
Qatar Airways

Qatar Airways' carry-on policy allows only one item in economy, so pack wisely to avoid fees.


Qatar Airways offers extra legroom seats for a fee, ideal for added comfort on short flights.

Read more about Qatar Airwaysby Brandon Schultz
United Airlines

United's Basic Economy restricts carry-ons; only personal items are allowed without extra fees.


United Economy Plus offers extra legroom seats, enhancing comfort for short domestic flights.

Read more about United Airlinesby Harriet Baskas
Southwest

Enjoy free snacks and non-alcoholic beverages on board, enhancing your short-haul flight experience.


Southwest offers two free checked bags, including oversized items like skis or golf clubs.

Read more about Southwestby Marisa Garcia
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on Qatar Airways

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Southwest

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more

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 March 28, 2025.

The best time to book flights from Buffalo to Chicago is 80 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, August is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $245). Flying from Buffalo to Chicago in March is currently the most expensive (average of $323). 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 March 31, 2025.

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 March 30, 2025.

Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday 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 March 31, 2025.

The most flights from BUF to CHI are scheduled on a Monday (25 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Chicago by month

Plan your trip to Chicago by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

Plan your trip to Chicago by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 March 31, 2025.
Read reviews from past customers who have flown Southwest, Delta and United Airlines from Buffalo to Chicago. 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

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,275 reviews
Southwest
8.0
Very good
4,275 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,899 reviews
Southwest
8.0
Very good
4,275 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,614 reviews
Southwest
8.0
Very good
4,275 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,924 reviews
Southwest
8.0
Very good
4,275 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,275 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 17 daily outbound flights to Chicago from 5 different airlines.

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

    Flying on American Airlines is currently your cheapest option to Chicago, with prices starting at $261. Additional round-trip tickets that might be worth considering are offered by Frontier and JetBlue, with the lowest prices starting at $267 and $269, respectively. American Airlines is priced at 19% 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 Frontier. According to our data, you can fly for as low as $79. Users have also found prices from $104 and $123 on JetBlue and Sun Country Air, 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: Qatar Airways (95%), Avianca (91%), Copa Airlines (88%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $1,102 for a flight from Buffalo to Chicago. The cheapest flight overall is $132 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $187.

  • 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, August is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $245). Flying from Buffalo to Chicago in March is currently the most expensive (average of $323). 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
Merrillville
New Buffalo
Hammond
Benton Harbor
Porter
Lansing
Valparaiso
Chesterton

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Alternative routes for Buffalo to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to O'Hare Intl flights
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Newark to Midway flights
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Stewart to Rockford flights

Top 5 airlines flying from Buffalo to Chicago

Discover the top 5 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$95Average$193FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$152Average$370FlexibilityNo cancel feeOn-time69%
DeltaCheapest$156Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$173Average$331FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$266Average$327FlexibilityNo cancel feeOn-time63%
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