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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 146

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
17 Jun — 24 Jun1
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 12 June 2025.

Round-trip from

C$ 256

One-way from

C$ 146

Popular in

February

Cheapest in

September

Average price

C$ 477

Good round-trip deal

C$ 404 or less

Good one-way deal

C$ 189 or less
United Airlines
  • United Airlines
  • 20/8-21/8
  • Nonstop
  • 3h 44m total
  • Buffalo to Chicago
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JetBlue
  • JetBlue
  • 12/9
  • 1 total stop
  • 5h 55m total
  • Buffalo to Chicago
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Highest demand for flights based on searches. 10% potential increase in price (C$ 77 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 June 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 12 June 2025.

Wed 20/810:55 a.m.BUF - ORD
Nonstop1h 56mUnited Airlines
Thu 21/86:28 p.m.ORD - BUF
Nonstop1h 48mUnited Airlines
Deal found 10/6C$ 256
Tue 16/97:40 a.m.BUF - ORD
1 stop5h 10mSouthwest
Thu 18/91:50 p.m.ORD - BUF
1 stop8h 15mSouthwest
Deal found 11/6C$ 257
Thu 28/812:45 p.m.BUF - ORD
1 stop4h 28mDelta
Sat 30/87:15 a.m.ORD - BUF
1 stop3h 12mDelta
Deal found 10/6C$ 271
Tue 9/96:00 a.m.BUF - ORD
1 stop7h 10mJetBlue
Fri 12/91:36 p.m.ORD - BUF
1 stop7h 24mJetBlue
Deal found 10/6C$ 280
Fri 10/108:02 a.m.BUF - ORD
Nonstop1h 54mAmerican Airlines
Tue 14/109:09 p.m.ORD - BUF
Nonstop1h 45mAmerican Airlines
Deal found 11/6C$ 302
Thu 3/711:23 a.m.BUF - ORD
1 stop26h 28mSun Country Air
Sat 5/76:09 p.m.ORD - BUF
1 stop15h 35mSun Country Air
Deal found 10/6C$ 335
Thu 12/69:56 a.m.BUF - ORD
1 stop8h 02mFrontier
Sun 15/611:32 a.m.ORD - BUF
1 stop7h 36mFrontier
Deal found 11/6C$ 603

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 12 June 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 20/8

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

Nonstop1h 56m

Chicago O'Hare Intl

Thu 21/8

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

Nonstop1h 48m

C$ 256

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 16/9

7:40 a.m.-11:50 a.m.

1 stop5h 10m

Chicago O'Hare Intl

Thu 18/9

1:50 p.m.-11:05 p.m.

1 stop8h 15m

C$ 257

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 28/8

12:45 p.m.-4:13 p.m.

1 stop4h 28m

Chicago O'Hare Intl

Sat 30/8

7:15 a.m.-11:27 a.m.

1 stop3h 12m

C$ 271

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 9/9

6:00 a.m.-12:10 p.m.

1 stop7h 10m

Chicago O'Hare Intl

Fri 12/9

1:36 p.m.-10:00 p.m.

1 stop7h 24m

C$ 280

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 10/10

8:02 a.m.-8:56 a.m.

Nonstop1h 54m

Chicago O'Hare Intl

Tue 14/10

9:09 p.m.-11:54 p.m.

Nonstop1h 45m

C$ 302

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Thu 3/7

11:23 a.m.-12:51 p.m.

1 stop26h 28m

Chicago O'Hare Intl

Sat 5/7

6:09 p.m.-10:44 a.m.

1 stop15h 35m

C$ 335

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 31/8

6:00 a.m.-10:47 a.m.

1 stop5h 47m

C$ 146

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 19/10

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

Nonstop1h 56m

C$ 149

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 9/8

1:00 p.m.-5:08 p.m.

1 stop5h 08m

C$ 150

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 14/10

5:30 a.m.-12:45 p.m.

2 stops8h 15m

C$ 157

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 12 results
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?

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 9 June 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 12 June 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 27% 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 12 June 2025.

The most flights from BUF to ORD are scheduled on a Monday (32 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 12 June 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Buffalo to Chicago have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews
Check prices

Entertainment

7.6

Crew

8.6

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.1

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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 29 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 United Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at C$ 256. Additional round-trip tickets that might be worth considering are offered by Southwest and Delta, with the lowest prices starting at C$ 257 and C$ 271, respectively. Users have found that United Airlines is 45% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Buffalo to Chicago O'Hare Intl Airport one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as C$ 146. Users have also found prices from C$ 149 and C$ 150 on United Airlines and Delta, respectively.

  • 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 Copa Airlines (96%), Avianca (93%) and Republic Airways (92%).

  • 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$ 1,759, our data indicates the cheapest price to be C$ 148. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 283.

  • 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 Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Elk Grove Village
Evanston
Downers Grove
Skokie
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 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 184AverageC$ 408FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 354AverageC$ 548FlexibilityNo 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?

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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