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Cheap flights from Buffalo to Chicago O'Hare Intl Airport from C$ 127

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ORD
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Buffalo to Chicago O'Hare Intl are usually found in September or January, booked 74 days in advance, depart on a Friday or Thursday and return on a Monday

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 April 2025.

Round-trip from

C$ 352

One-way from

C$ 127

Popular in

February

Cheapest in

September

Average price

C$ 485

Good round-trip deal

C$ 543 or less

Good one-way deal

C$ 213 or less
United Airlines
  • United Airlines
  • 13/5-20/5
  • Nonstop
  • 3h 47m total
  • Buffalo to Chicago
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Frontier
  • Frontier
  • 24/5
  • 1 total stop
  • 6h 07m total
  • Buffalo to Chicago
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Highest demand for flights based on searches. 10% potential increase in price (C$ 75 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 April 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 April 2025.

Fri 18/45:09 p.m.BUF - ORD
1 stop26h 55mFrontier
Thu 24/44:30 p.m.ORD - BUF
1 stop15h 32mFrontier
Deal found 14/4C$ 325
Tue 13/51:55 p.m.BUF - ORD
Nonstop2h 00mUnited Airlines
Tue 20/56:35 p.m.ORD - BUF
Nonstop1h 47mUnited Airlines
Deal found 14/4C$ 352
Sat 24/56:55 p.m.BUF - ORD
1 stop5h 22mDelta
Tue 27/55:58 p.m.ORD - BUF
1 stop4h 57mDelta
Deal found 13/4C$ 377
Tue 29/47:05 a.m.BUF - ORD
1 stop6h 21mJetBlue
Tue 6/54:03 p.m.ORD - BUF
1 stop4h 51mJetBlue
Deal found 15/4C$ 382
Fri 30/55:45 a.m.BUF - ORD
2 stops8h 00mSouthwest
Thu 5/61:50 p.m.ORD - BUF
1 stop6h 15mSouthwest
Deal found 14/4C$ 406
Sat 17/56:00 p.m.BUF - ORD
Nonstop1h 57mAmerican Airlines
Wed 21/57:50 a.m.ORD - BUF
1 stop4h 22mAmerican Airlines
Deal found 14/4C$ 416

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 April 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

Tue 13/5

1:55 p.m.-2:55 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Tue 20/5

6:35 p.m.-9:22 p.m.

Nonstop1h 47m

C$ 352

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 24/5

6:55 p.m.-11:17 p.m.

1 stop5h 22m

Chicago O'Hare Intl

Tue 27/5

5:58 p.m.-11:55 p.m.

1 stop4h 57m

C$ 377

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Tue 29/4

7:05 a.m.-12:26 p.m.

1 stop6h 21m

Chicago O'Hare Intl

Tue 6/5

4:03 p.m.-9:54 p.m.

1 stop4h 51m

C$ 382

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 30/5

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

2 stops8h 00m

Chicago O'Hare Intl

Thu 5/6

1:50 p.m.-9:05 p.m.

1 stop6h 15m

C$ 406

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sun 22/6

9:12 p.m.-8:38 a.m.

1 stop12h 26m

Chicago O'Hare Intl

Sun 6/7

5:01 a.m.-12:17 p.m.

1 stop6h 16m

C$ 412

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 17/5

6:00 p.m.-6:57 p.m.

Nonstop1h 57m

Chicago O'Hare Intl

Wed 21/5

7:50 a.m.-1:12 p.m.

1 stop4h 22m

C$ 416

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 24/5

7:10 p.m.-12:17 a.m.

1 stop6h 07m

C$ 127

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Wed 14/5

3:05 p.m.-9:54 p.m.

1 stop7h 49m

C$ 159

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Fri 30/5

5:51 p.m.-6:47 p.m.

Nonstop1h 56m

C$ 174

BuffaloChicago

BUF - ORD

BUFORD

Buffalo

Sat 24/5

3:00 p.m.-3:53 p.m.

Nonstop1h 53m

C$ 177

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 12 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 11 April 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 74 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$ 355). 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 April 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 25% 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 15 April 2025.

The most flights from BUF to ORD are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 15 April 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
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,279 reviews
Southwest
8.0
Very good
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,917 reviews
Southwest
8.0
Very good
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,658 reviews
Southwest
8.0
Very good
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,926 reviews
Southwest
8.0
Very good
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,279 reviews
Check prices

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 27 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$ 352. Additional round-trip tickets that might be worth considering are offered by Delta and JetBlue, with the lowest prices starting at C$ 377 and C$ 382, respectively. Users have found that United Airlines is 27% 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 Frontier. According to our data, you can fly for as low as C$ 127. Users have also found prices from C$ 159 and C$ 174 on JetBlue and United Airlines, 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 (100%), Avianca (93%) and Qatar Airways (91%).

  • 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$ 618, our data indicates the cheapest price to be C$ 198. The most popular route (Buffalo - Chicago O'Hare Intl), is priced around C$ 282.

  • 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$ 355). 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 274AverageC$ 415FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 305AverageC$ 511FlexibilityNo 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?

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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