BUF - ORD

C$ 122 Find Cheap Flights from Buffalo to Chicago

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to O'Hare Intl departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Chicago, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Buffalo to Chicago (BUF-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to O'Hare Intl

Tue, 20 Jan - Tue, 10 Feb
Delta Logo
2:30 p.m. - 9:46 p.m.BUF-ORD
8h 16m1 stop
Delta Logo
11:19 a.m. - 5:35 p.m.ORD-BUF
5h 16m1 stop
C$ 244Delta
Find Deal
Sat, 4 Oct - Mon, 6 Oct
Delta Logo
6:30 p.m. - 9:34 p.m.BUF-ORD
4h 04m1 stop
Delta Logo
5:51 p.m. - 11:39 p.m.ORD-BUF
4h 48m1 stop
C$ 245Delta
Find Deal
Tue, 20 Jan - Tue, 10 Feb
American Airlines Logo
4:00 p.m. - 5:00 p.m.BUF-ORD
2h 00mdirect
American Airlines Logo
8:00 a.m. - 10:46 a.m.ORD-BUF
1h 46mdirect
C$ 254American Airlines
Find Deal
Fri, 26 Sep - Sun, 28 Sep
Frontier Logo
4:57 p.m. - 11:59 p.m.BUF-ORD
8h 02m1 stop
Frontier Logo
11:36 a.m. - 6:46 p.m.ORD-BUF
6h 10m1 stop
C$ 256Frontier
Find Deal
Tue, 20 Jan - Tue, 10 Feb
American Airlines Logo
6:00 a.m. - 11:10 a.m.BUF-ORD
6h 10m1 stop
American Airlines Logo
8:00 a.m. - 10:46 a.m.ORD-BUF
1h 46mdirect
C$ 267American Airlines
Find Deal
Sat, 11 Oct - Sat, 18 Oct
Southwest Logo
2:15 p.m. - 9:30 p.m.BUF-ORD
8h 15m2 stops
Southwest Logo
1:30 p.m. - 9:45 p.m.ORD-BUF
7h 15m1 stop
C$ 283Southwest
Find Deal
Wed, 22 Oct - Wed, 29 Oct
Southwest Logo
5:30 a.m. - 12:45 p.m.BUF-ORD
8h 15m2 stops
Southwest Logo
1:50 p.m. - 8:10 p.m.ORD-BUF
5h 20m1 stop
C$ 324Southwest
Find Deal
Mon, 1 Dec - Wed, 3 Dec
United Airlines Logo
1:52 p.m. - 2:55 p.m.BUF-ORD
2h 03mdirect
United Airlines Logo
10:35 a.m. - 1:12 p.m.ORD-BUF
1h 37mdirect
C$ 337United Airlines
Find Deal
Fri, 26 Sep - Sun, 28 Sep
Frontier Logo
4:57 p.m. - 11:27 a.m.BUF-ORD
19h 30m2 stops
Frontier Logo
8:49 p.m. - 11:22 a.m.ORD-BUF
13h 33m2 stops
C$ 344Frontier
Find Deal
Fri, 3 Oct - Sun, 5 Oct
United Airlines Logo
4:08 p.m. - 9:26 p.m.BUF-ORD
6h 18m1 stop
United Airlines Logo
6:25 p.m. - 9:13 p.m.ORD-BUF
1h 48mdirect
C$ 366United Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
United's Economy Plus offers extra legroom on this route.
BUF's security wait time averages 12 minutes.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Delta
Cheapest • from C$ 244 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 18% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 244
Overall average: C$ 414
Delta
Tue 20/1Tue 10/2
BUF - ORD • 1 stop
Cheapest direct flights
C$ 245
Typical prices: C$ 427-637
United Airlines
Tue 20/1Tue 10/2
BUF - ORD • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Expert advice

Expert advice for your flight from Buffalo to O'Hare Intl

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Priority Boarding puts you in Zone 2, ensuring overhead bin space for your carry-on.


United's Economy Plus offers up to 15 cm more legroom than standard economy seats.

American Airlines

American's Main Cabin Extra provides early boarding and complimentary drinks, enhancing your travel experience.


American Airlines' Wi-Fi offers 20 minutes free with an ad, perfect for quick tasks.

Airports
BUF

BUF's security wait time averages 12 minutes, making it convenient for early morning flights to ORD.

Read more about BUFby Jennifer Bain
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Jennifer Bain

Jennifer Bain

Expert on BUF

Jennifer Bain

Jennifer Bain

Jennifer Bain is a Canadian travel writer who takes at least 50 flights a year and has proudly visited all 13 of Canada's provinces and territories. She is a former newspaper travel editor who has written three travel books. Jennifer is the Canada editor for U.S.-based National Parks Traveler and freelances for numerous other outlets.

Read more
Booking Insights

KAYAK's insights & trends for Buffalo to O'Hare Intl flights

Get data-powered insights and trends into flights from Buffalo to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Buffalo to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Buffalo to Chicago O'Hare Intl Airport is September, where tickets cost C$ 387 (return) on average. On the other hand, the most expensive months are February and March, where the average cost of round-trip tickets is C$ 662 and C$ 528 respectively.

Can I save money by flying with a layover from Buffalo to Chicago O'Hare Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 382, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Buffalo to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Buffalo to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Buffalo to Chicago O'Hare Intl Airport, you should book around 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Good to know

Low seasonMarch
Cheapest flightC$ 122
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Buffalo to Chicago

When to book flights from Buffalo to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Buffalo to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Buffalo to Chicago flights

  • What is the cheapest flight from Buffalo to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Buffalo to Chicago O'Hare Intl Airport was C$ 88 for a one-way ticket and C$ 176 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Buffalo to Chicago?

    American Airlines, JetBlue, and Delta offer inflight Wi-Fi service on the Buffalo to Chicago flight route.

  • Which aircraft models fly most regularly from Buffalo to Chicago?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Buffalo to Chicago flight route.

  • Which airline alliances offer flights from Buffalo to Chicago?

    oneworld, and Star Alliance are the airline alliances operating flights between Buffalo and Chicago, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Buffalo to Chicago?

    There are direct flights from Buffalo to Chicago on a daily basis.

  • Which is the best airline for flights from Buffalo to Chicago, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Buffalo to Chicago are United Airlines and American Airlines. With an average price for the route of C$ 567 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of C$ 469 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Buffalo to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Buffalo is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Buffalo with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Buffalo to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 332 or less one-way and C$ 590 or less round-trip.

Prefer to fly direct from Buffalo to Chicago?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Buffalo to Chicago O'Hare Intl.
Find which airlines fly direct from Buffalo Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Buffalo to Chicago O'Hare Intl

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Buffalo

Monday

American Airlines,United Airlines

American Airlines,United Airlines

Tuesday

American Airlines,United Airlines

American Airlines,United Airlines

Wednesday

American Airlines,United Airlines

American Airlines,United Airlines

Thursday

American Airlines,United Airlines

American Airlines,United Airlines

Friday

American Airlines,United Airlines

American Airlines,United Airlines

Saturday

American Airlines,United Airlines

American Airlines,United Airlines

Sunday

American Airlines,United Airlines

American Airlines,United Airlines

See more nonstop flights

Reviews of the top airlines flying from Buffalo to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Buffalo to O'Hare Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8937 reviews
7.1Entertainment
7.7Boarding
7.3Comfort
8.1Crew
6.6Food
Airline reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

2.0 MediocreAnonymous, Aug 2025RSW - ORD
Read more United Airlines reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

Any flight to ORD after about 2pm this summer has been challenging. Flight was delayed getting in (coming from ORD) and that led to it not leaving before a ground stop due to lightening before they could fuel the plane, and so forth. They made up some time but we were still late in arriving at ORD, and that led to missed connections.

Food was ok, but not as good as I have had before on AA.

Pretty good. The food was just mediocre, the boarding and crew were good.

My flight got switched and my prepaid bag didnt transfer over properly so I paid to check ANOTHER BAG. I was placed in a middle seat and it was just miserable. At least it was a bulkhead row so I had legroom. The flight just never seem3d to end

Was not able to watch most shows on the entertainment site. They would not load

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

The flight was fine but the 8 hour delay in Chicago was awful - 5 gate changes and repeated delays without an explanation. No vouchers. Nothing.

Everything you need to know for your flight from Buffalo to O'Hare Intl

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