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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 141

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 — ORD
26 Aug — 2 Sep1
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 27 July 2026.

Fri 18/91:16 p.m.
BUF
-
ORD
1 stop23h 46m
Frontier
Mon 21/92:03 p.m.
ORD
-
BUF
1 stop21h 18m
Frontier
Deal found 22/7C$ 358
Fri 21/811:36 a.m.
BUF
-
ORD
1 stop21h 17m
Frontier
Fri 28/89:10 p.m.
ORD
-
BUF
1 stop19h 59m
Frontier
Deal found 24/7C$ 387
Fri 25/91:40 p.m.
BUF
-
ORD
1 stop23h 22m
Frontier
Sun 27/92:03 p.m.
ORD
-
BUF
1 stop21h 52m
Frontier
Deal found 25/7C$ 397
Fri 18/910:30 a.m.
BUF
-
ORD
Nonstop1h 59m
United Airlines
Tue 22/92:02 p.m.
ORD
-
BUF
Nonstop1h 43m
United Airlines
Deal found 25/7C$ 406
Thu 27/89:29 p.m.
BUF
-
ORD
1 stop16h 51m
Frontier
Sun 30/87:05 a.m.
ORD
-
BUF
1 stop26h 24m
Frontier
Deal found 25/7C$ 414
Fri 18/96:56 p.m.
BUF
-
ORD
Nonstop2h 19m
American Airlines
Mon 21/98:46 a.m.
ORD
-
BUF
Nonstop1h 53m
American Airlines
Deal found 22/7C$ 418
Fri 21/85:58 p.m.
BUF
-
ORD
Nonstop2h 02m
United Airlines
Mon 24/86:15 p.m.
ORD
-
BUF
Nonstop1h 52m
United Airlines
Deal found 22/7C$ 420
Sun 16/89:33 p.m.
BUF
-
ORD
1 stop12h 38m
Frontier
Sun 23/87:44 p.m.
ORD
-
BUF
1 stop21h 25m
Frontier
Deal found 26/7C$ 423
Fri 7/82:48 p.m.
BUF
-
ORD
1 stop6h 05m
Frontier
Mon 10/87:05 a.m.
ORD
-
BUF
1 stop5h 48m
Frontier
Deal found 24/7C$ 424
Tue 11/86:00 a.m.
BUF
-
ORD
1 stop5h 11m
JetBlue
Sat 15/89:40 a.m.
ORD
-
BUF
1 stop8h 26m
JetBlue
Deal found 26/7C$ 427

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 27 July 2026.

Round-trip from

C$ 358

One-way from

C$ 141

Popular in

March

Cheapest in

January

Average price

C$ 520

Good round-trip deal

C$ 673 or less

Good one-way deal

C$ 370 or less
Frontier
  • Frontier
  • 18/9-21/9
  • 2 total stops
  • 45h 04m total
  • Buffalo to Chicago
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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$ 28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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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 27 July 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

Cheapest round-trip

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 16/8

9:33 p.m.-9:11 a.m.

1 stop12h 38m

Chicago O'Hare Intl

Sun 23/8

7:44 p.m.-6:09 p.m.

1 stop21h 25m

C$ 423

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 11/8

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

1 stop5h 11m

Chicago O'Hare Intl

Sat 15/8

9:40 a.m.-7:06 p.m.

1 stop8h 26m

C$ 427

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 1/9

5:58 p.m.-7:00 p.m.

Nonstop2h 02m

Chicago O'Hare Intl

Wed 2/9

6:49 a.m.-9:28 a.m.

Nonstop1h 39m

C$ 431

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 16/10

10:46 a.m.-11:45 a.m.

Nonstop1h 59m

Chicago O'Hare Intl

Mon 19/10

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

Nonstop1h 39m

C$ 504
Quickest round-trip

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 11/12

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

Nonstop1h 48m

Chicago O'Hare Intl

Sun 13/12

5:50 p.m.-8:31 p.m.

Nonstop1h 41m

C$ 520

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 26/9

10:46 a.m.-11:45 a.m.

Nonstop1h 59m

Chicago O'Hare Intl

Sun 27/9

2:00 p.m.-4:43 p.m.

Nonstop1h 43m

C$ 547

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 8/8

7:52 p.m.-7:42 a.m.

2 stops12h 50m

Chicago O'Hare Intl

Sun 9/8

10:25 a.m.-1:13 p.m.

Nonstop1h 48m

C$ 548
Cheapest one-way

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Mon 21/9

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

1 stop7h 25m

C$ 163

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 27/9

6:00 a.m.-9:58 a.m.

1 stop4h 58m

C$ 163

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 6/10

6:00 a.m.-9:59 a.m.

1 stop4h 59m

C$ 163

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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?

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 17 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$ 340). Flying from Buffalo to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 537). 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 27 July 2026.

It’s typically best to fly out from Buffalo to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 53% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Buffalo to Chicago O'Hare Intl Airport?

Airfare is typical for this route at the moment.

Buffalo to Chicago O'Hare Intl Airport flights typically cost between C$ 349 and C$ 748 in September.
The cheapest round-trip price found within the last 5 days was C$ 358 on Frontier (18 Sep-21 Sep).

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 27 July 2026.
Read through reviews of airlines operating flights from Buffalo to Chicago O'Hare Intl Airport, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,837 reviews
Check prices

Comfort

7.2

Food

6.4

Entertainment

6.8

Overall

7.1

Boarding

7.5

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.
American Airlines
7.1
Good
11,837 reviews
American Airlines
7.1
Good
11,837 reviews
Check prices

Comfort

7.2

Food

6.4

Entertainment

6.8

Overall

7.1

Boarding

7.5

Crew

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

BNA - ORD

My flight was 8 hours delayed, so I missed my connecting flight to Dublin. I understand it’s not the staff’s fault but the lack of sympathy and apology was appalling. I had been sat in the airport since 4am until 3pm and they did not seem understanding. Not good. Need better customer service.

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 35 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 02m. Frontier provides one of the quickest options available for as low as C$ 431. 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 American Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at C$ 382. Users have found that American Airlines is 18% 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 Japan Airlines (93%), Copa Airlines (90%) and SkyWest Airlines (88%).

  • 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$ 1,040, our data indicates the cheapest price to be C$ 189. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 313.

  • 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$ 340). Flying from Buffalo to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 537). 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
Northbrook
Evanston
Des Plaines
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
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 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 382AverageC$ 491FlexibilityNo 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 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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