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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 117

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 13/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
1 Apr — 8 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from Buffalo to O'Hare Intl
Explore the most affordable flight options available from Buffalo to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 March 2026.

Sun 12/411:57 a.m.
BUF
-
ORD
1 stop21h 20m
Frontier
Sun 19/41:12 p.m.
ORD
-
BUF
1 stop20h 22m
Frontier
Deal found 28/2C$ 220
Thu 23/412:35 p.m.
BUF
-
ORD
1 stop11h 04m
Frontier
Sun 26/45:50 a.m.
ORD
-
BUF
2 stops27h 44m
Frontier
Deal found 27/2C$ 282
Wed 15/410:55 a.m.
BUF
-
ORD
Nonstop2h 05m
United Airlines
Sat 18/410:30 a.m.
ORD
-
BUF
Nonstop1h 43m
United Airlines
Deal found 28/2C$ 334
Tue 19/52:28 p.m.
BUF
-
ORD
1 stop8h 08m
JetBlue
Tue 2/68:50 a.m.
ORD
-
BUF
1 stop7h 02m
JetBlue
Deal found 26/2C$ 336
Fri 20/39:54 a.m.
BUF
-
ORD
1 stop7h 10m
JetBlue
Tue 24/311:00 a.m.
ORD
-
BUF
1 stop7h 03m
JetBlue
Deal found 28/2C$ 337
Thu 23/45:57 p.m.
BUF
-
ORD
Nonstop2h 03m
United Airlines
Sat 25/47:23 a.m.
ORD
-
BUF
Nonstop1h 48m
United Airlines
Deal found 26/2C$ 348
Sat 18/47:00 a.m.
BUF
-
ORD
Nonstop1h 57m
United Airlines
Mon 20/42:33 p.m.
ORD
-
BUF
Nonstop1h 43m
United Airlines
Deal found 1/3C$ 355
Tue 17/36:00 a.m.
BUF
-
ORD
1 stop6h 25m
JetBlue
Wed 18/311:00 a.m.
ORD
-
BUF
1 stop7h 03m
JetBlue
Deal found 2/3C$ 361
Wed 15/410:55 a.m.
BUF
-
ORD
Nonstop2h 05m
United Airlines
Wed 22/42:33 p.m.
ORD
-
BUF
Nonstop1h 43m
United Airlines
Deal found 28/2C$ 367
Sat 9/56:25 a.m.
BUF
-
ORD
1 stop5h 02m
Delta
Sat 9/55:19 p.m.
ORD
-
BUF
1 stop4h 35m
Delta
Deal found 26/2C$ 375

Find flight deals from Buffalo to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to O'Hare Intl (ORD). 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 March 2026.

Round-trip from

C$ 220

One-way from

C$ 117

Popular in

February

Cheapest in

January

Average price

C$ 469

Good round-trip deal

C$ 465 or less

Good one-way deal

C$ 285 or less
Frontier
  • Frontier
  • 12/4-19/4
  • 2 total stops
  • 41h 42m total
  • Buffalo to Chicago
Search Deals
Frontier
  • Frontier
  • 12/4
  • 1 total stop
  • 12h 18m total
  • Buffalo to Chicago
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Buffalo to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Buffalo to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to O'Hare Intl 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 March 2026.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 21/3

1:00 p.m.-4:18 p.m.

1 stop4h 18m

Chicago O'Hare Intl

Mon 23/3

5:40 p.m.-10:55 p.m.

1 stop4h 15m

C$ 430

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 18/4

7:00 a.m.-7:57 a.m.

Nonstop1h 57m

Chicago O'Hare Intl

Mon 20/4

6:02 p.m.-8:43 p.m.

Nonstop1h 41m

C$ 436

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 7/8

7:40 p.m.-11:55 p.m.

1 stop5h 15m

Chicago O'Hare Intl

Mon 10/8

8:55 a.m.-3:11 p.m.

1 stop5h 16m

C$ 476

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 1/5

5:55 p.m.-6:51 p.m.

Nonstop1h 56m

Chicago O'Hare Intl

Sun 3/5

10:40 a.m.-1:18 p.m.

Nonstop1h 38m

C$ 476

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 10/6

6:00 a.m.-1:15 p.m.

2 stops8h 15m

Chicago O'Hare Intl

Tue 16/6

2:40 p.m.-10:40 p.m.

2 stops7h 00m

C$ 517

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 1/4

7:00 a.m.-7:58 a.m.

Nonstop1h 58m

Chicago O'Hare Intl

Sun 5/4

6:02 p.m.-8:43 p.m.

Nonstop1h 41m

C$ 517

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 2/4

6:15 a.m.-9:10 a.m.

1 stop3h 55m

Chicago O'Hare Intl

Sun 5/4

5:59 p.m.-11:46 p.m.

1 stop4h 47m

C$ 531

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 16/4

7:00 a.m.-7:57 a.m.

Nonstop1h 57m

Chicago O'Hare Intl

Sun 19/4

10:30 a.m.-1:13 p.m.

Nonstop1h 43m

C$ 537

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 20/3

7:30 p.m.-11:44 p.m.

1 stop5h 14m

Chicago O'Hare Intl

Wed 25/3

6:05 p.m.-8:46 p.m.

Nonstop1h 41m

C$ 546

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 21/3

6:00 a.m.-12:50 p.m.

2 stops7h 50m

Chicago O'Hare Intl

Mon 23/3

2:40 p.m.-12:10 a.m.

2 stops8h 30m

C$ 550

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Buffalo to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

How far ahead should I book a flight from Buffalo to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Buffalo to O'Hare Intl. Price data was last updated on 27 February 2026.

To ensure you get the cheapest price possible for a flight from Buffalo to Chicago O'Hare Intl Airport, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Buffalo to Chicago O'Hare Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of C$ 105). Flying from Buffalo to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 353). 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 ORD?

Find hourly flight availability from Buffalo to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 March 2026.

When flying from Buffalo to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 2 March 2026.
Read through reviews of airlines operating flights from Buffalo to Chicago O'Hare Intl Airport, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,375 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.
United Airlines
7.4
Good
9,375 reviews
United Airlines
7.4
Good
9,375 reviews
Check prices

Boarding

7.7

Crew

8.1

Food

6.6

Entertainment

7.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Oct 2025

YUL - ORD

Crew and customer service are 5 stars. I had a lot of luggage for a very long trip and they were nothing but helpful and found solutions to every problem. It was my first time flying with United, and they really are the friendly skies. Leg room however, on 2/3 flights was terrible. Same for entertainment: There was only a seat-mounted screen on 1/3 flights. It would have been nice to have on the longest leg of the journey.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to O'Hare Intl. 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 O'Hare Intl?

    Buffalo (BUF), located 13.4 km from the city centre, is the airport you fly out of when you book flights from Buffalo to Chicago O'Hare Intl. 1 airline have flights from Buffalo to Chicago O'Hare Intl on a regular basis. Booking flights from Buffalo to Chicago O'Hare Intl should not be difficult; the airport handles an average of 21 outbound flights to Chicago O'Hare Intl per day.

  • How long is the flight from Buffalo to Chicago O'Hare Intl Airport?

    A quick flight from Buffalo to Chicago O'Hare Intl Airport can take about 1h 57m. United Airlines provides one of the quickest options available for as low as C$ 408. Buffalo and Chicago O'Hare Intl Airport are separated by a distance of 760 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Buffalo to Chicago O'Hare Intl Airport round-trip?

    Flying on United Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at C$ 187. Users have found that United Airlines is 58% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Buffalo to Chicago O'Hare Intl Airport?

    The top 3 most reliable airlines when flying from Buffalo to Chicago O'Hare Intl Airport are Qatar Airways (81%), American Airlines (79%) and Republic Airways (78%).

  • What are the cheapest flights from Buffalo to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Buffalo to Chicago O'Hare Intl Airport? While on average our users pay C$ 678, our data indicates the cheapest price to be C$ 211. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 496.

  • Can I find deals for flights from Buffalo to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Buffalo to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to O'Hare Intl.

  • Can I find deals for business class flights from Buffalo to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Buffalo to O'Hare Intl 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 O'Hare Intl Airport?

    Currently, July is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of C$ 105). Flying from Buffalo to Chicago O'Hare Intl Airport in December is currently the most expensive (average of C$ 353). 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

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Naperville
Bolingbrook
Romeoville
Schaumburg

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Top airline flying from Buffalo to O'Hare Intl

Discover the top airline that operate flights from Buffalo to O'Hare Intl. 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 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 187AverageC$ 558FlexibilityNo 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 O'Hare Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Buffalo to O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to O'Hare Intl?

Cheapflights helps you find that perfect flight to O'Hare Intl 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 O'Hare Intl with no change fees?

Certainly. Search results for flights to O'Hare Intl 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 O'Hare Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to O'Hare Intl from Buffalo today and book when prices fit your budget.

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