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Cheap flights from Buffalo to Chicago from C$ 140

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
1 Sep — 8 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in September or February, booked 35 days in advance, depart on a Friday or Thursday and return on a Monday

Cheap flight deals from Buffalo to Chicago

Enter your travel dates to find the best prices.

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 2 August 2026.

Thu 27/87:20 p.m.
BUF
-
ORD
1 stop13h 33m
Frontier
Thu 3/91:59 p.m.
ORD
-
BUF
1 stop19h 30m
Frontier
Deal found 30/7C$ 339
Sat 5/95:02 a.m.
BUF
-
ORD
Nonstop1h 54m
American Airlines
Sat 5/911:48 a.m.
ORD
-
BUF
1 stop7h 58m
American Airlines
Deal found 30/7C$ 346
Sat 29/811:36 a.m.
BUF
-
ORD
1 stop9h 32m
Frontier
Sun 30/87:44 p.m.
ORD
-
BUF
1 stop21h 25m
Frontier
Deal found 30/7C$ 352
Fri 28/811:36 a.m.
BUF
-
ORD
1 stop9h 23m
Frontier
Sun 30/87:05 a.m.
ORD
-
BUF
1 stop26h 24m
Frontier
Deal found 30/7C$ 357
Thu 17/94:31 p.m.
BUF
-
ORD
1 stop6h 27m
JetBlue
Thu 24/93:00 p.m.
ORD
-
BUF
1 stop6h 56m
JetBlue
Deal found 1/8C$ 359
Sat 5/93:54 p.m.
BUF
-
ORD
1 stop5h 36m
Delta
Sun 6/96:59 a.m.
ORD
-
BUF
1 stop3h 23m
Delta
Deal found 1/8C$ 360
Sat 5/96:55 a.m.
BUF
-
ORD
Nonstop2h 00m
United Airlines
Tue 8/96:15 p.m.
ORD
-
BUF
Nonstop1h 52m
United Airlines
Deal found 31/7C$ 361
Sun 13/96:00 a.m.
BUF
-
ORD
1 stop4h 58m
JetBlue
Sun 20/97:00 a.m.
ORD
-
BUF
1 stop7h 37m
JetBlue
Deal found 30/7C$ 363
Mon 31/811:36 a.m.
BUF
-
ORD
1 stop21h 17m
Frontier
Sat 5/97:44 p.m.
ORD
-
BUF
2 stops37h 45m
Frontier
Deal found 30/7C$ 368
Thu 10/912:49 p.m.
BUF
-
ORD
2 stops23h 51m
Frontier
Sun 13/97:28 p.m.
ORD
-
BUF
1 stop16h 27m
Frontier
Deal found 1/8C$ 374
Fri 11/91:40 p.m.
BUF
-
ORD
1 stop23h 11m
Frontier
Mon 14/97:28 p.m.
ORD
-
BUF
2 stops21h 21m
Frontier
Deal found 30/7C$ 382

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 2 August 2026.

Round-trip from

C$ 339

One-way from

C$ 140

Popular in

March

Cheapest in

September

Average price

C$ 472

Good round-trip deal

C$ 536 or less

Good one-way deal

C$ 323 or less
Frontier
  • Frontier
  • 27/8-3/9
  • 2 total stops
  • 33h 03m total
  • Buffalo to Chicago
Search Deals
Frontier
  • Frontier
  • 9/9
  • 1 total stop
  • 5h 43m total
  • Buffalo to Chicago
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 629,999 searches. Data last updated 2 August 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 - ORD

BUFORD

Buffalo

Wed 30/9

12:02 p.m.-4:13 p.m.

1 stop5h 11m

Chicago O'Hare Intl

Thu 1/10

1:55 p.m.-7:04 p.m.

1 stop4h 09m

C$ 360

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 12/9

10:27 a.m.-11:26 a.m.

Nonstop1h 59m

Chicago O'Hare Intl

Wed 16/9

6:15 p.m.-9:07 p.m.

Nonstop1h 52m

C$ 391

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 21/9

10:30 a.m.-11:29 a.m.

Nonstop1h 59m

Chicago O'Hare Intl

Fri 25/9

6:56 p.m.-9:43 p.m.

Nonstop1h 47m

C$ 404

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 9/9

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sat 12/9

6:15 p.m.-9:07 p.m.

Nonstop1h 52m

C$ 432

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 12/8

6:00 a.m.-10:11 a.m.

1 stop5h 11m

Chicago O'Hare Intl

Sun 16/8

9:42 a.m.-6:56 p.m.

1 stop8h 14m

C$ 486
Quickest round-trip

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 9/10

7:00 a.m.-8:00 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 13/10

6:50 a.m.-9:29 a.m.

Nonstop1h 39m

C$ 531

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 5/9

7:00 a.m.-12:17 p.m.

1 stop6h 17m

Chicago O'Hare Intl

Sat 5/9

5:18 p.m.-11:09 p.m.

1 stop4h 51m

C$ 544

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 13/11

5:58 p.m.-7:02 p.m.

Nonstop2h 04m

Chicago O'Hare Intl

Sun 15/11

8:50 a.m.-2:20 p.m.

1 stop4h 30m

C$ 545
Cheapest one-way

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 11/9

3:33 p.m.-9:58 p.m.

1 stop7h 25m

C$ 163

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 31/8

9:17 a.m.-4:17 p.m.

1 stop8h 00m

C$ 164

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 C$ 389). Flying from Buffalo to Chicago in March is currently the most expensive (average of C$ 611). 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 2 August 2026.

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 morning, which can drop the price by up to 38% versus 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 2 August 2026.

The most flights from BUF to CHI are scheduled on a Saturday (40 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (15 on average).

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

Airfare is typical for this route at the moment.
Buffalo to Chicago flights typically cost between C$ 317 and C$ 517 in August.
The cheapest round-trip price found within the last 5 days was C$ 339 on Frontier (27 Aug-3 Sep).

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 25 July 2026.

Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday 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 2 August 2026.
Get a feel of what it's like to fly with Southwest 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
4,229 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

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
4,229 reviews
Southwest
8.0
Very good
4,229 reviews
Check prices

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

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?

    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 31 flights from Buffalo to Chicago per day from 2 different airlines.

  • How long is the flight from Buffalo to Chicago?

    Departing from Buffalo to Chicago will take you 1h 59m. 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$ 351. Another option worth looking into is American Airlines, starting at C$ 379 round trip. You may be able to fly from Buffalo to Chicago for 26% 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 Republic Airways (95%), Copa Airlines (90%) and Japan Airlines (90%).

  • What are the cheapest flights from Buffalo to Chicago?

    While on average a flight from Buffalo to Chicago is generally C$ 1,034, our data shows the cheapest flight currently is C$ 188. When looking at the most popular route, (Buffalo - Chicago O'Hare Intl), you can expect to pay C$ 363 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$ 389). Flying from Buffalo to Chicago in March is currently the most expensive (average of C$ 611). 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

Browse thousands of different options on Cheapflights for your next trip

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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 2 airlines flying from Buffalo to Chicago

Discover the top 2 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 2 August 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 351AverageC$ 557FlexibilityNo cancel feeOn-time63%
Search Southwest flights
American AirlinesCheapestC$ 379AverageC$ 488FlexibilityNo cancel feeOn-time71%
Search American 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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