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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 123

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap 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 15 September 2025.

Round-trip from

C$ 267

One-way from

C$ 123

Popular in

February

Cheapest in

August

Average price

C$ 455

Good round-trip deal

C$ 614 or less

Good one-way deal

C$ 332 or less
American Airlines
  • American Airlines
  • 1/3-3/3
  • Nonstop
  • 3h 34m total
  • Buffalo to Chicago
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Delta
  • Delta
  • 14/10
  • 1 total stop
  • 6h 18m total
  • Buffalo to Chicago
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Highest demand for flights based on searches. 11% potential increase in price (C$ 88 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 25 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 O'Hare Intl.
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Price to beat on a one-way flight from Buffalo to Chicago O'Hare Intl.
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Find flight deals from Buffalo to O'Hare Intl

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 15 September 2025.

Fri 19/94:57 p.m.BUF - ORD
1 stop8h 02mFrontier
Mon 29/96:00 a.m.ORD - BUF
1 stop9h 03mFrontier
Deal found 15/9C$ 259
Tue 21/1010:00 a.m.BUF - ORD
1 stop9h 18mJetBlue
Sat 25/1010:08 a.m.ORD - BUF
1 stop5h 55mJetBlue
Deal found 13/9C$ 270
Fri 19/94:57 p.m.BUF - ORD
1 stop8h 02mFrontier
Sun 28/98:49 p.m.ORD - BUF
1 stop20h 25mFrontier
Deal found 15/9C$ 298
Thu 18/97:41 p.m.BUF - ORD
1 stop25h 03mFrontier
Mon 29/96:00 a.m.ORD - BUF
1 stop9h 03mFrontier
Deal found 15/9C$ 299
Wed 15/1010:00 a.m.BUF - ORD
1 stop9h 18mJetBlue
Wed 22/1010:08 a.m.ORD - BUF
1 stop5h 55mJetBlue
Deal found 14/9C$ 311
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
Thu 18/97:41 p.m.BUF - ORD
1 stop25h 03mFrontier
Sun 28/98:49 p.m.ORD - BUF
1 stop20h 25mFrontier
Deal found 15/9C$ 322
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
Tue 30/96:00 a.m.BUF - ORD
1 stop7h 10mJetBlue
Wed 1/109:51 a.m.ORD - BUF
1 stop6h 12mJetBlue
Deal found 14/9C$ 345
Thu 25/93:55 p.m.BUF - ORD
1 stop5h 54mJetBlue
Wed 1/109:51 a.m.ORD - BUF
1 stop6h 12mJetBlue
Deal found 14/9C$ 358
Fri 3/107:07 a.m.BUF - ORD
Nonstop1h 58mUnited Airlines
Fri 3/104:00 p.m.ORD - BUF
1 stop5h 42mUnited Airlines
Deal found 12/9C$ 365

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 15 September 2025.
Use the filters below to find and compare flights from Buffalo to Chicago O'Hare Intl Airport that are best for you.

Fly from

Buffalo

Fly to

O'Hare Intl

Route

Depart

Return

Price

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

Thu 25/12

5:41 p.m.-6:48 p.m.

Nonstop2h 07m

Chicago O'Hare Intl

Thu 5/3

7:10 a.m.-9:49 a.m.

Nonstop1h 39m

C$ 358

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 20/1

4:00 p.m.-5:00 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 10/2

8:05 a.m.-2:24 p.m.

1 stop5h 19m

C$ 360

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 1/3

12:47 p.m.-11:35 p.m.

1 stop11h 48m

Chicago O'Hare Intl

Tue 3/3

9:00 a.m.-5:11 p.m.

1 stop7h 11m

C$ 367

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 20/1

6:16 a.m.-10:22 a.m.

1 stop5h 06m

Chicago O'Hare Intl

Tue 10/2

10:35 a.m.-5:07 p.m.

1 stop5h 32m

C$ 372

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/10

7:07 a.m.-8:05 a.m.

Nonstop1h 58m

Chicago O'Hare Intl

Fri 17/10

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

Nonstop1h 43m

C$ 374

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 21/10

5:27 p.m.-6:28 p.m.

Nonstop2h 01m

Chicago O'Hare Intl

Sat 25/10

8:00 a.m.-10:41 a.m.

Nonstop1h 41m

C$ 374

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 11/11

5:40 p.m.-6:46 p.m.

Nonstop2h 06m

Chicago O'Hare Intl

Thu 13/11

7:25 a.m.-10:03 a.m.

Nonstop1h 38m

C$ 389

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 19 results
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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 12 September 2025.

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, January is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Buffalo to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 348). 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 15 September 2025.

It’s typically best to fly out from Buffalo to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 33% on the flight price compared to flying at noon, which is usually more expensive.

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 15 September 2025.
Read through reviews of airlines operating flights from Buffalo to Chicago O'Hare Intl Airport, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews
Check prices

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews
Check prices

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews
Check prices

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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. 2 airlines 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 28 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 2h 01m. American Airlines provides one of the quickest options available for as low as C$ 267. Buffalo and Chicago O'Hare Intl Airport are separated by a distance of 760 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buffalo to Chicago O'Hare Intl Airport round-trip?

    Flying on American Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at C$ 309. Another option worth looking into is United Airlines, starting at C$ 388 round trip. Users have found that American Airlines is 34% 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 Avianca (90%), Copa Airlines (89%) and ANA (83%).

  • 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$ 791, our data indicates the cheapest price to be C$ 255. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 245.

  • 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, January is the cheapest month in which you can book a flight from Buffalo to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Buffalo to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 348). 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
Elk Grove Village
Skokie
Downers Grove
Naperville
Bolingbrook
Romeoville

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Top 2 airlines flying from Buffalo to O'Hare Intl

Discover the top 2 airlines 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 309AverageC$ 475FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 388AverageC$ 566FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Buffalo to O'Hare Intl?

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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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