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Cheap flights from Buffalo to Chicago from C$ 120

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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
14 Oct — 21 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in August or September, booked 84 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 14 September 2025.

Round-trip from

C$ 245

One-way from

C$ 120

Popular in

February

Cheapest in

August

Average price

C$ 393

Good round-trip deal

C$ 381 or less

Good one-way deal

C$ 332 or less
Delta
  • Delta
  • 30/9-4/10
  • 2 total stops
  • 11h 54m total
  • Buffalo to Chicago
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United Airlines
  • United Airlines
  • 20/1
  • Nonstop
  • 2h 15m total
  • Buffalo to Chicago
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Highest demand for flights based on searches. 5% potential increase in price (C$ 36 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
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Average for round-trip flights in September 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 14 September 2025.

Tue 30/96:03 a.m.BUF - ORD
1 stop5h 02mDelta
Sat 4/103:45 p.m.ORD - BUF
1 stop6h 52mDelta
Deal found 11/9C$ 245
Sun 21/97:41 p.m.BUF - ORD
1 stop25h 03mFrontier
Thu 25/911:36 a.m.ORD - BUF
1 stop6h 10mFrontier
Deal found 11/9C$ 270
Sat 11/109:45 p.m.BUF - ORD
1 stop10h 29mFrontier
Mon 13/105:05 a.m.ORD - BUF
1 stop5h 14mFrontier
Deal found 12/9C$ 273
Thu 9/1010:50 a.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Sun 12/107:10 a.m.ORD - BUF
Nonstop1h 43mUnited Airlines
Deal found 12/9C$ 291
Fri 10/105:24 p.m.BUF - ORD
1 stop8h 35mMultiple Airlines
Fri 17/107:51 p.m.ORD - BUF
2 stops23h 58mMultiple Airlines
Deal found 11/9C$ 317
Mon 8/122:00 p.m.BUF - ORD
1 stop6h 05mJetBlue
Wed 10/1211:30 a.m.ORD - BUF
1 stop6h 09mJetBlue
Deal found 13/9C$ 320
Tue 14/106:00 a.m.BUF - ORD
1 stop7h 22mJetBlue
Sat 18/1010:08 a.m.ORD - BUF
1 stop6h 07mJetBlue
Deal found 13/9C$ 324
Wed 1/106:00 a.m.BUF - ORD
1 stop7h 10mJetBlue
Wed 8/101:20 p.m.ORD - BUF
1 stop4h 44mJetBlue
Deal found 13/9C$ 336
Thu 16/103:55 p.m.BUF - ORD
1 stop5h 56mJetBlue
Sat 18/1010:08 a.m.ORD - BUF
1 stop5h 55mJetBlue
Deal found 12/9C$ 340
Tue 7/107:10 a.m.BUF - ORD
1 stop5h 40mSouthwest
Thu 9/101:50 p.m.ORD - BUF
1 stop9h 00mSouthwest
Deal found 12/9C$ 342
Tue 30/95:55 p.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Sat 4/1012:00 p.m.ORD - BUF
1 stop5h 13mUnited Airlines
Deal found 11/9C$ 343

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 629,999 searches. Data last updated 14 September 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

Thu 11/12

6:24 p.m.-12:01 a.m.

1 stop6h 37m

Chicago O'Hare Intl

Sat 13/12

6:45 a.m.-12:34 p.m.

1 stop4h 49m

C$ 245

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 20/1

5:40 p.m.-9:46 p.m.

1 stop5h 06m

Chicago O'Hare Intl

Tue 10/2

9:30 a.m.-5:35 p.m.

1 stop7h 05m

C$ 245

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 1/3

8:09 a.m.-9:10 a.m.

Nonstop2h 01m

Chicago O'Hare Intl

Tue 3/3

1:10 p.m.-3:43 p.m.

Nonstop1h 33m

C$ 267

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 21/10

10:00 a.m.-6:18 p.m.

1 stop9h 18m

Chicago O'Hare Intl

Sat 25/10

10:08 a.m.-5:03 p.m.

1 stop5h 55m

C$ 270

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 8/12

2:00 p.m.-7:05 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Wed 10/12

11:30 a.m.-6:39 p.m.

1 stop6h 09m

C$ 320

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 1/3

7:15 p.m.-5:37 p.m.

1 stop23h 22m

Chicago O'Hare Intl

Tue 3/3

5:45 p.m.-11:07 p.m.

1 stop4h 22m

C$ 331

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/10

5:24 p.m.-12:59 a.m.

1 stop8h 35m

Chicago O'Hare Intl

Fri 17/10

6:00 a.m.-8:18 p.m.

1 stop13h 18m

C$ 335

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 16/10

3:55 p.m.-8:51 p.m.

1 stop5h 56m

Chicago O'Hare Intl

Sat 18/10

10:08 a.m.-5:03 p.m.

1 stop5h 55m

C$ 340

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 20/1

4:40 p.m.-8:41 p.m.

1 stop5h 01m

Chicago O'Hare Intl

Tue 10/2

8:00 a.m.-10:46 a.m.

Nonstop1h 46m

C$ 360

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 9/10

6:30 a.m.-10:38 a.m.

1 stop5h 08m

Chicago O'Hare Intl

Sun 12/10

7:10 a.m.-9:53 a.m.

Nonstop1h 43m

C$ 365

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 21 results
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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 12 September 2025.

The best time to book flights from Buffalo to Chicago is 84 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, January is the cheapest month in which you can book a flight from Buffalo to Chicago (average of C$ 261). Flying from Buffalo to Chicago in March is currently the most expensive (average of C$ 349). 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 14 September 2025.

When flying from Buffalo to Chicago, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus 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 7 September 2025.

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

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 14 September 2025.

The most flights from BUF to CHI are scheduled on a Friday (32 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (21 on average).

What’s the top layover airport for flights from Buffalo to Chicago?

Share of one-stop round-trip flights from Buffalo to Chicago chosen by Cheapflights users in the past 12 months, using the same layover each way.

Baltimore (BWI) – chosen by Cheapflights users on 33% of one-stop itineraries from Buffalo to Chicago on Cheapflights.

What’s the cheapest layover airport for flights from Buffalo to Chicago?

Average round-trip fare for 1-stop flights from Buffalo to Chicago, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Orlando (MCO) is the most affordable 1-stop option, with an average round-trip price of C$ 194.

What’s the fastest layover option from Buffalo to Chicago?

Shortest average travel time for 1-stop one-way flights from Buffalo to Chicago, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Baltimore (BWI) have the shortest average one-way travel time for 1-stop routes: 6h 20m.

Which airport typically offers the quickest layover for flights from Buffalo to Chicago?

Average layover duration for 1-stop one-way flights from Buffalo to Chicago, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Tampa (TPA) offer the fastest connection on this route, with an average layover time of 1h 48m.

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 14 September 2025.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Buffalo to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,245 reviews
Check prices

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews
Check prices

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews
Check prices

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews
Check prices

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,245 reviews
Check prices

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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?

    If you book a flight to Chicago from Buffalo, you will be flying from Buffalo, which is the city’s only airport. Buffalo (BUF) is located 13.4 km from the centre of Buffalo. There are 25 flights from Buffalo to Chicago per day from 3 different airlines.

  • How long is the flight from Buffalo to Chicago?

    Departing from Buffalo to Chicago will take you 2h 01m. Airlines will cover a distance of 760 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 C$ 149. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at C$ 309 and C$ 388, respectively. You may be able to fly from Buffalo to Chicago for 65% less than the average price by searching for these airlines.

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

    The top 3 most reliable airlines when flying from Buffalo to Chicago are Avianca (90%), Copa Airlines (89%) and ANA (83%).

  • What are the cheapest flights from Buffalo to Chicago?

    While on average a flight from Buffalo to Chicago is generally C$ 791, our data shows the cheapest flight currently is C$ 255. When looking at the most popular route, (Buffalo - Chicago O'Hare Intl), you can expect to pay C$ 245 for that flight.

  • 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 C$ 261). Flying from Buffalo to Chicago in March is currently the most expensive (average of C$ 349). 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

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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.
Buffalo to O'Hare Intl flights
Buffalo to St. Louis flights

Top 3 airlines flying from Buffalo to Chicago

Discover the top 3 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 629,999 searches. Data last updated 14 September 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 149AverageC$ 381FlexibilityNo cancel feeOn-time63%
Search Southwest flights
American AirlinesCheapestC$ 309AverageC$ 469FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 388AverageC$ 566FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Buffalo to Chicago?

When you search for this flight from Buffalo to Chicago, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Chicago?

Cheapflights helps you find that perfect flight to Chicago from Buffalo by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Buffalo to Chicago with no change fees?

Certainly. Search results for flights to Chicago from Buffalo shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Buffalo to Chicago become cheaper?

Yes, Cheapflights offers price alerts on Buffalo to Chicago flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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