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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 108

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
19 Aug — 26 Aug1
1 adult

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 14 August 2025.

Round-trip from

C$ 229

One-way from

C$ 108

Popular in

February

Cheapest in

September

Average price

C$ 392

Good round-trip deal

C$ 570 or less

Good one-way deal

C$ 273 or less
United Airlines
  • United Airlines
  • 10/9-11/9
  • Nonstop
  • 3h 39m total
  • Buffalo to Chicago
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United Airlines
  • United Airlines
  • 21/10
  • Nonstop
  • 1h 58m total
  • Buffalo to Chicago
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Highest demand for flights based on searches. 11% potential increase in price (C$ 82 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 24 potential savings vs. average RT price).
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Average for round-trip flights in August 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 14 August 2025.

Wed 10/910:55 a.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Thu 11/97:10 a.m.ORD - BUF
Nonstop1h 43mUnited Airlines
Deal found 12/8C$ 229
Tue 21/108:45 a.m.BUF - ORD
1 stop5h 00mSouthwest
Wed 22/101:50 p.m.ORD - BUF
1 stop5h 20mSouthwest
Deal found 14/8C$ 241
Sat 18/108:20 a.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Mon 20/107:10 a.m.ORD - BUF
Nonstop1h 43mUnited Airlines
Deal found 12/8C$ 244
Sun 14/97:30 a.m.BUF - ORD
Nonstop1h 55mAmerican Airlines
Tue 16/98:33 a.m.ORD - BUF
Nonstop1h 33mAmerican Airlines
Deal found 13/8C$ 245
Mon 15/98:30 a.m.BUF - ORD
1 stop5h 15mSouthwest
Tue 16/91:50 p.m.ORD - BUF
1 stop7h 20mSouthwest
Deal found 14/8C$ 256
Wed 3/912:45 p.m.BUF - ORD
1 stop4h 28mDelta
Sat 6/95:45 p.m.ORD - BUF
1 stop4h 14mDelta
Deal found 12/8C$ 258
Mon 15/95:54 p.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Fri 19/96:28 p.m.ORD - BUF
Nonstop1h 48mUnited Airlines
Deal found 14/8C$ 259
Thu 4/96:20 a.m.BUF - ORD
1 stop5h 00mDelta
Sat 6/95:45 p.m.ORD - BUF
1 stop4h 14mDelta
Deal found 12/8C$ 272
Fri 12/97:05 a.m.BUF - ORD
Nonstop1h 58mUnited Airlines
Sun 14/97:10 a.m.ORD - BUF
Nonstop1h 43mUnited Airlines
Deal found 13/8C$ 274
Fri 26/97:35 a.m.BUF - ORD
Nonstop1h 55mAmerican Airlines
Sun 28/98:33 a.m.ORD - BUF
Nonstop1h 33mAmerican Airlines
Deal found 13/8C$ 276
Wed 10/97:35 a.m.BUF - ORD
Nonstop1h 55mAmerican Airlines
Wed 17/91:02 p.m.ORD - BUF
1 stop7h 49mAmerican Airlines
Deal found 13/8C$ 284

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 14 August 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

Wed 10/9

10:55 a.m.-11:51 a.m.

Nonstop1h 56m

Chicago O'Hare Intl

Thu 11/9

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

Nonstop1h 43m

C$ 229

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 21/10

8:45 a.m.-12:45 p.m.

1 stop5h 00m

Chicago O'Hare Intl

Wed 22/10

1:50 p.m.-8:10 p.m.

1 stop5h 20m

C$ 241

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 18/11

7:00 a.m.-12:38 p.m.

1 stop6h 38m

Chicago O'Hare Intl

Wed 19/11

7:00 a.m.-1:48 p.m.

1 stop5h 48m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 18/10

8:20 a.m.-9:16 a.m.

Nonstop1h 56m

Chicago O'Hare Intl

Mon 20/10

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

Nonstop1h 43m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 2/9

9:02 a.m.-12:45 p.m.

1 stop4h 43m

Chicago O'Hare Intl

Wed 3/9

11:05 a.m.-6:07 p.m.

1 stop6h 02m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 5/10

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

Nonstop1h 58m

Chicago O'Hare Intl

Wed 8/10

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

Nonstop1h 43m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 20/1

11:15 a.m.-5:37 p.m.

1 stop7h 22m

Chicago O'Hare Intl

Tue 10/2

7:00 a.m.-11:51 a.m.

1 stop3h 51m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 3/10

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

Nonstop1h 56m

Chicago O'Hare Intl

Tue 7/10

2:09 p.m.-4:53 p.m.

Nonstop1h 44m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 13/9

10:55 a.m.-11:51 a.m.

Nonstop1h 56m

Chicago O'Hare Intl

Mon 15/9

6:28 p.m.-9:16 p.m.

Nonstop1h 48m

C$ 244

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 17/10

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

Nonstop1h 56m

Chicago O'Hare Intl

Wed 22/10

6:25 p.m.-9:13 p.m.

Nonstop1h 48m

C$ 244

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/8

Showing 1-10 of 22 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 8 August 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$ 352). 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 14 August 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 28% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from Buffalo to Chicago O'Hare Intl Airport

Explore weekly flight availability from Buffalo to O'Hare Intl. 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 August 2025.

The most flights from BUF to ORD are scheduled on a Thursday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 14 August 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
8,916 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

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
8,916 reviews
United Airlines
7.4
Good
8,916 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

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
8,916 reviews
Check prices

Entertainment

7.1

Crew

8.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

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 16 outbound flights to Chicago O'Hare Intl per day.

  • 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$ 331. Another option worth looking into is United Airlines, starting at C$ 386 round trip. Users have found that American Airlines is 29% 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 (92%), Copa Airlines (91%) and ANA (81%).

  • 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$ 998, our data indicates the cheapest price to be C$ 234. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 258.

  • 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$ 352). 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
Naperville
Bolingbrook
Romeoville
Elk Grove Village

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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 14 August 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 331AverageC$ 450FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 386AverageC$ 564FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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?

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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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