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$89+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in August or September, booked 80 days in advance, depart on a Friday or Thursday and return on a Tuesday

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 July 30, 2025.

Round-trip from

$177
(Southwest)

One-way from

$89
(Southwest)

Popular in

February

Cheapest in

August

Average price

$349

Good round-trip deal

$235 or less

Good one-way deal

$163 or less
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 ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Buffalo to Chicago (CHI).
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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 July 30, 2025.

This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 8/306:35 amBUF - MDW
Nonstop1h 35mSouthwest
Tue 9/28:30 pmMDW - BUF
Nonstop1h 30mSouthwest
Deal found 7/30$177
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/207:05 amBUF - ORD
Nonstop1h 58mUnited Airlines
Tue 9/237:10 amORD - BUF
Nonstop1h 43mUnited Airlines
Deal found 7/30$177
This Frontier deal was found by Cheapflights users on 7/29. 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 8/231:56 pmBUF - ORD
1 stop10h 37mFrontier
Sat 8/307:46 pmORD - BUF
1 stop13h 31mFrontier
Deal found 7/29$178
This American Airlines deal was found by Cheapflights users on 7/29. 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 8/286:30 amBUF - ORD
Nonstop1h 55mAmerican Airlines
Sat 8/307:10 pmORD - BUF
Nonstop1h 42mAmerican Airlines
Deal found 7/29$188
This Delta deal was found by Cheapflights users on 7/27. 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 8/276:20 amBUF - MDW
1 stop3h 15mDelta
Sat 8/306:17 pmMDW - BUF
1 stop3h 42mDelta
Deal found 7/27$197
This Delta deal was found by Cheapflights users on 7/30. 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 8/272:19 pmBUF - ORD
1 stop5h 55mDelta
Tue 9/211:05 amORD - BUF
1 stop6h 02mDelta
Deal found 7/30$197
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/97:50 pmBUF - MDW
1 stop27h 34mFrontier
Sat 8/2310:51 amMDW - BUF
1 stop22h 26mFrontier
Deal found 7/28$205
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:00 amBUF - ORD
1 stop7h 21mJetBlue
Tue 9/166:45 amORD - BUF
1 stop7h 12mJetBlue
Deal found 7/30$211
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:05 amBUF - ORD
Nonstop1h 58mMultiple Airlines
Mon 8/259:32 amORD - BUF
1 stop9h 38mMultiple Airlines
Deal found 7/28$222
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 9/67:10 amBUF - ORD
1 stop6h 55mSouthwest
Mon 9/82:55 pmORD - BUF
2 stops7h 10mSouthwest
Deal found 7/30$243

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 30, 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 - MDW

BUFMDW

Buffalo

Sat 8/30

6:35 am-7:10 am

Nonstop1h 35m

Chicago Midway

Tue 9/2

8:30 pm-11:00 pm

Nonstop1h 30m

$177

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 9/20

7:05 am-8:03 am

Nonstop1h 58m

Chicago O'Hare Intl

Tue 9/23

7:10 am-9:53 am

Nonstop1h 43m

$177

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 8/23

1:56 pm-11:33 pm

1 stop10h 37m

Chicago O'Hare Intl

Sat 8/30

7:46 pm-10:17 am

1 stop13h 31m

$178

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Wed 8/27

6:20 am-8:35 am

1 stop3h 15m

Chicago Midway

Sat 8/30

6:17 pm-10:59 pm

1 stop3h 42m

$197

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 8/27

6:04 am-10:05 am

1 stop5h 01m

Chicago O'Hare Intl

Wed 9/3

5:00 pm-10:59 pm

1 stop4h 59m

$197

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 8/21

6:30 am-7:25 am

Nonstop1h 55m

Chicago O'Hare Intl

Mon 8/25

7:10 pm-9:52 pm

Nonstop1h 42m

$199

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

9:15 am-1:23 pm

1 stop5h 08m

Chicago O'Hare Intl

Tue 2/10

2:20 pm-9:31 pm

1 stop6h 11m

$202

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Sat 8/9

7:50 pm-10:24 pm

1 stop27h 34m

Chicago Midway

Sat 8/23

10:51 am-10:17 am

1 stop22h 26m

$205

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 8/23

7:05 am-8:03 am

Nonstop1h 58m

Chicago O'Hare Intl

Mon 8/25

9:32 am-8:10 pm

1 stop9h 38m

$222

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 9/6

7:10 am-1:05 pm

1 stop6h 55m

Chicago O'Hare Intl

Mon 9/8

2:55 pm-11:05 pm

2 stops7h 10m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 19 results
1
2

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 July 25, 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 $321). 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 30, 2025.

It’s optimal to fly from Buffalo to Chicago in the evening. By choosing this option you can save up to 32% 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 July 27, 2025.

Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Friday afternoons 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 July 30, 2025.

The most flights from BUF to CHI are scheduled on a Wednesday (34 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 July 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
JetBlue
7.3
Good
2,913 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Crew

8.6

Entertainment

7.5

Boarding

8.1

Food

7.0

Comfort

8.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 23 daily outbound flights to Chicago from 4 different airlines.

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

    Flying on Southwest is currently your cheapest option to Chicago, with prices starting at $177. Additional round-trip tickets that might be worth considering are offered by United Airlines and Frontier, with the lowest prices starting at $177 and $178, respectively. Southwest is priced at 45% 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 Southwest. According to our data, you can fly for as low as $89. Users have also found prices from $89 and $90 on American Airlines and Frontier, 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: Copa Airlines (97%), Avianca (90%), United Airlines (89%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $1,624 for a flight from Buffalo to Chicago. The cheapest flight overall is $118 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $177.

  • 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 $321). 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
Merrillville
Lansing
Hammond
Benton Harbor
Porter
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.
Newark to O'Hare Intl flights
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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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$208FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$127Average$371FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$161Average$322FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$259Average$339FlexibilityNo cancel feeOn-time63%

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