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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 145

BUF — ORD
12 Oct — 19 Oct1
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

Sat 3/101:45 p.m. -
2 stops16h 53m
Wed 7/106:20 a.m. -
1 stop5h 35m
Deal found 8/9C$ 380
Thu 15/1010:46 a.m. -
Nonstop1h 59m
Sat 17/106:00 p.m. -
Nonstop1h 47m
Deal found 10/9C$ 384
Sat 3/107:59 a.m. -
Nonstop2h 11m
Sat 10/102:20 p.m. -
Nonstop1h 48m
Deal found 10/9C$ 385
Sat 10/101:44 p.m. -
1 stop5h 47m
Mon 12/108:11 p.m. -
1 stop20h 45m
Deal found 10/9C$ 407
Sat 12/1212:06 p.m. -
1 stop5h 11m
Mon 14/122:39 p.m. -
1 stop7h 17m
Deal found 8/9C$ 411
Thu 8/106:00 a.m. -
1 stop5h 07m
Fri 16/102:20 p.m. -
Nonstop1h 48m
Deal found 9/9C$ 413
Sat 10/105:45 p.m. -
Nonstop2h 02m
Sat 17/106:00 p.m. -
Nonstop1h 47m
Deal found 10/9C$ 427
Sat 3/101:45 p.m. -
2 stops16h 53m
Sat 10/106:00 a.m. -
1 stop5h 59m
Deal found 7/9C$ 428
Sat 12/91:45 p.m. -
1 stop5h 38m
Wed 16/96:20 a.m. -
1 stop5h 35m
Deal found 7/9C$ 429

Find flight deals from Buffalo to O'Hare Intl

Round-trip from

C$ 380

One-way from

C$ 145

Popular in

August

Cheapest in

January

Average price

C$ 470

Good round-trip deal

C$ 529 or less

Good one-way deal

C$ 334 or less
Frontier
  • Frontier
  • 3/10-7/10
  • 3 total stops
  • 22h 28m total
  • Buffalo to Chicago
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Frontier
  • Frontier
  • 21/10-31/12
  • 1 total stop
  • 5h 47m total
  • Buffalo to Chicago
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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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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Cheapflights Fare Finder

 
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 Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Tue 10/11

6:00 a.m.-1:08 p.m.

1 stop8h 08m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 206

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Tue 6/10

10:00 a.m.-4:26 p.m.

1 stop7h 26m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 206

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Thu 10/12

12:06 p.m.-4:17 p.m.

1 stop5h 11m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 206

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Wed 7/10

1:48 p.m.-2:50 p.m.

Nonstop2h 02m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 241
Quickest round-trip

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Tue 6/10

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

Nonstop1h 59m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 241

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Thu 10/12

6:30 a.m.-7:44 a.m.

Nonstop2h 14m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 241

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Sat 10/10

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

Nonstop2h 00m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 269

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Tue 13/10

6:00 a.m.-1:08 p.m.

1 stop8h 08m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 277

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Mon 8/3

2:10 p.m.-7:15 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 291

BuffaloChicago

BUF Buffalo - ORD Chicago O'Hare Intl

BUFORD

Buffalo

Fri 5/3

12:50 p.m.-4:37 p.m.

1 stop4h 47m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 291

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 20 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

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 42 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$ 334). Flying from Buffalo to Chicago O'Hare Intl Airport in August is currently the most expensive (average of C$ 629). 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?

It’s typically best to fly out from Buffalo to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 52% 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 below average for this route at the moment.

Buffalo to Chicago O'Hare Intl Airport flights typically cost between C$ 406 and C$ 580 in October.
The cheapest round-trip price found within the last 5 days was C$ 380 on Frontier (3 Oct-7 Oct).

Reviews of airlines servicing O'Hare Intl

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
12,050 reviews
Check prices

Comfort

7.2

Crew

7.9

Food

6.4

Boarding

7.4

Entertainment

6.8

Overall

7.1

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
12,050 reviews
American Airlines
7.1
Good
12,050 reviews
Check prices

Comfort

7.2

Crew

7.9

Food

6.4

Boarding

7.4

Entertainment

6.8

Overall

7.1

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

  • 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 23 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 59m. United Airlines provides one of the quickest options available for as low as C$ 384. 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$ 314. Users have found that American Airlines is 35% 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 Republic Airways (87%), Japan Airlines (84%) and SkyWest Airlines (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$ 918, our data indicates the cheapest price to be C$ 205. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 352.

  • 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$ 334). Flying from Buffalo to Chicago O'Hare Intl Airport in August is currently the most expensive (average of C$ 629). 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
Racine
Rockford
Naperville
Schaumburg
Elk Grove Village
Skokie

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Buffalo to O'Hare Intl

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 314AverageC$ 483FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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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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