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$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
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 December 18, 2025.

This Booking.com deal was found by Cheapflights users on 12/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:44 pmBUF - MDW
1 stop5h 28mFrontier
Mon 1/58:15 amMDW - BUF
1 stop7h 45mFrontier
Deal found 12/18$253
This Booking.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:44 pmBUF - ORD
1 stop5h 40mFrontier
Sun 1/48:09 pmORD - BUF
1 stop23h 59mFrontier
Deal found 12/17$341
This Expedia deal was found by Cheapflights users on 12/17. 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.
Mon 12/225:40 pmBUF - ORD
1 stop5h 44mFrontier
Mon 12/296:00 amORD - BUF
1 stop9h 45mFrontier
Deal found 12/17$343
This Booking.com deal was found by Cheapflights users on 12/16. 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.
Sat 12/205:49 pmBUF - ORD
1 stop18h 49mFrontier
Mon 12/226:00 amORD - BUF
1 stop9h 45mFrontier
Deal found 12/16$358
This Booking.com deal was found by Cheapflights users on 12/16. 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 12/265:40 pmBUF - MDW
1 stop5h 32mFrontier
Thu 1/13:10 pmMDW - BUF
1 stop28h 30mFrontier
Deal found 12/16$364
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/315:35 pmBUF - ORD
Nonstop2h 15mUnited Airlines
Sun 1/410:35 amORD - BUF
Nonstop1h 49mUnited Airlines
Deal found 12/17$367
This Priceline deal was found by Cheapflights users on 12/15. 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 12/1811:04 amBUF - ORD
1 stop8h 42mMultiple Airlines
Fri 12/196:00 amORD - BUF
1 stop9h 45mMultiple Airlines
Deal found 12/15$372
This Frontier deal was found by Cheapflights users on 12/16. 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 12/209:28 amBUF - MDW
1 stop12h 36mFrontier
Mon 12/228:15 amMDW - BUF
1 stop7h 30mFrontier
Deal found 12/16$393
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/206:53 pmBUF - ORD
2 stops20h 30mUnited Airlines
Sun 12/216:02 pmORD - BUF
Nonstop1h 52mUnited Airlines
Deal found 12/16$406
This JetBlue deal was found by Cheapflights users on 12/17. 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.
Sat 12/205:37 pmBUF - ORD
1 stop5h 27mJetBlue
Sun 1/117:45 amORD - BUF
1 stop5h 45mJetBlue
Deal found 12/17$413
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:00 amBUF - ORD
Nonstop1h 59mAmerican Airlines
Sun 1/46:09 amORD - BUF
1 stop5h 08mAmerican Airlines
Deal found 12/17$414
This Southwest deal was found by Cheapflights users on 12/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:25 pmBUF - MDW
Nonstop1h 45mSouthwest
Sun 1/49:30 amMDW - BUF
Nonstop1h 30mSouthwest
Deal found 12/18$415

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$162
(Frontier)

One-way from

$70
(Expedia)

Popular in

February

Cheapest in

August

Average price

$371

Good round-trip deal

$322 or less

Good one-way deal

$194 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. 9% potential increase in price ($34 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 December 2025
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 December 18, 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

Mon 2/2

1:39 pm-10:19 pm

1 stop9h 40m

Chicago Midway

Thu 2/5

6:20 am-12:44 pm

1 stop5h 24m

$162

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 1/12

1:15 pm-12:08 pm

1 stop23h 53m

Chicago O'Hare Intl

Sat 1/17

3:49 pm-8:03 pm

1 stop27h 14m

$174

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 1/12

1:15 pm-10:39 pm

1 stop10h 24m

Chicago O'Hare Intl

Wed 1/14

7:45 am-2:30 pm

1 stop5h 45m

$177

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 2/6

10:00 am-5:44 pm

1 stop8h 44m

Chicago O'Hare Intl

Sun 2/8

7:45 am-2:30 pm

1 stop5h 45m

$184

BuffaloChicago

BUF - MDW

BUFMDW

Buffalo

Sun 2/22

2:19 pm-10:25 pm

1 stop9h 06m

Chicago Midway

Sat 2/28

8:00 am-9:52 am

1 stop24h 52m

$200

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 2/1

10:00 am-5:25 pm

1 stop8h 25m

Chicago O'Hare Intl

Wed 2/4

7:45 am-2:30 pm

1 stop5h 45m

$223

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

10:25 am-5:43 pm

1 stop8h 18m

Chicago O'Hare Intl

Tue 2/10

7:45 am-2:30 pm

1 stop5h 45m

$223

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/20

11:21 am-12:36 pm

Nonstop2h 15m

Chicago O'Hare Intl

Tue 2/10

8:09 am-10:51 am

Nonstop1h 42m

$233

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 1/7

5:23 pm-6:30 pm

Nonstop2h 07m

Chicago O'Hare Intl

Sat 1/10

10:35 am-1:24 pm

Nonstop1h 49m

$241

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 1/14

10:45 am-11:52 am

Nonstop2h 07m

Chicago O'Hare Intl

Wed 1/21

10:35 am-1:24 pm

Nonstop1h 49m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 42 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Chicago flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 12, 2025.

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 November is currently the most expensive (average of $258). 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 December 18, 2025.

It’s optimal to fly from Buffalo to Chicago in the evening. By choosing this option you can save up to 33% 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 December 13, 2025.

Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Thursday at noon 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 December 18, 2025.

The most flights from BUF to CHI are scheduled on a Thursday (28 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

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

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 December 18, 2025.
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
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
9,093 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
11,055 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Crew

8.6

Food

7.0

Overall

7.9

Comfort

8.0

Boarding

8.1

Entertainment

7.5

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 12 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 3h 49m. Fly via Frontier, JetBlue, or Delta 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 $129. Additional round-trip tickets that might be worth considering are offered by United Airlines and American Airlines, with the lowest prices starting at $157 and $161, respectively. Frontier is priced at 59% 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: Copa Airlines (81%), Royal Jordanian (77%), American Airlines (75%).

  • What are the cheapest flights from Buffalo to Chicago?

    On average you can expect to pay $940 for a flight from Buffalo to Chicago. The cheapest flight overall is $120 while the most popular route, (Buffalo - Chicago O'Hare Intl) is currently priced at $171.

  • 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 November is currently the most expensive (average of $258). 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

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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.
John F Kennedy Intl 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$200FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$157Average$362FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$160Average$328FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$237Average$349FlexibilityNo cancel feeOn-time63%

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