BUF - ORD

C$ 121 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 16/6. 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, 0 bags

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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Everything you should know

Cheapest round-trip
C$ 340
Typical prices: C$ 476-C$ 283
Frontier
Fri 7/8Mon 10/8
BUF - ORD • 1 stop
Cheapest direct flights
C$ 353
Typical prices: C$ 506-C$ 347
United Airlines
Tue 16/6Wed 17/6
BUF - ORD • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
Cheapest • from C$ 340 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with American Airlines and United Airlines. Average duration is 2h 04m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
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+1
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Good to know
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Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Buffalo to O'Hare Intl (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 O'Hare Intl 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

Fri, 7 Aug - Mon, 10 Aug
Frontier Logo
2:48 p.m. - 7:53 p.m.
BUF
-
ORD
6h 05m
1 stop
Frontier Logo
7:05 a.m. - 1:53 p.m.
ORD
-
BUF
5h 48m
1 stop
C$ 340Frontier
Tue, 16 Jun - Wed, 17 Jun
United Airlines Logo
7:00 a.m. - 7:59 a.m.
BUF
-
ORD
1h 59mdirect
United Airlines Logo
6:17 p.m. - 9:03 p.m.
ORD
-
BUF
1h 46mdirect
C$ 353United Airlines
Tue, 9 Jun - Wed, 10 Jun
Frontier Logo
12:05 p.m. - 7:53 p.m.
BUF
-
ORD
8h 48m
1 stop
Frontier Logo
6:55 a.m. - 1:55 p.m.
ORD
-
BUF
6h 00m
1 stop
C$ 371Frontier
Tue, 13 Oct - Wed, 14 Oct
Delta Logo
3:50 p.m. - 6:40 p.m.
BUF
-
ORD
3h 50m
1 stop
Delta Logo
7:35 p.m. - 11:59 p.m.
ORD
-
BUF
3h 24m
1 stop
C$ 381Delta
Fri, 26 Jun - Tue, 7 Jul
Frontier Logo
2:50 p.m. - 7:50 p.m.
BUF
-
ORD
6h 00m
1 stop
Frontier Logo
5:13 p.m. - 7:06 p.m.
ORD
-
BUF
24h 53m
1 stop
C$ 399Frontier
Thu, 27 Aug - Mon, 31 Aug
United Airlines Logo
6:55 a.m. - 7:55 a.m.
BUF
-
ORD
2h 00mdirect
United Airlines Logo
2:07 p.m. - 4:56 p.m.
ORD
-
BUF
1h 49mdirect
C$ 400United Airlines
Tue, 13 Oct - Thu, 15 Oct
Delta Logo
3:50 p.m. - 6:40 p.m.
BUF
-
ORD
3h 50m
1 stop
Delta Logo
7:35 p.m. - 11:59 p.m.
ORD
-
BUF
3h 24m
1 stop
C$ 404Delta
Wed, 15 Jul - Sat, 18 Jul
United Airlines Logo
6:04 p.m. - 7:03 p.m.
BUF
-
ORD
1h 59mdirect
United Airlines Logo
6:17 p.m. - 9:03 p.m.
ORD
-
BUF
1h 46mdirect
C$ 417United Airlines
Wed, 22 Jul - Tue, 28 Jul
Delta Logo
7:00 a.m. - 5:06 p.m.
BUF
-
ORD
11h 06m
1 stop
Delta Logo
7:05 a.m. - 11:22 a.m.
ORD
-
BUF
3h 17m
1 stop
C$ 419Delta
Tue, 14 Jul - Tue, 28 Jul
Delta Logo
8:55 a.m. - 1:03 p.m.
BUF
-
ORD
5h 08m
1 stop
Delta Logo
7:05 a.m. - 11:22 a.m.
ORD
-
BUF
3h 17m
1 stop
C$ 424Delta
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.

How much is a round-trip flight from Buffalo to Chicago O'Hare Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Buffalo to Chicago O'Hare Intl Airport departing in August.

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 January, where tickets cost C$ 325 (return) on average. On the other hand, the most expensive months are March and July, where the average cost of round-trip tickets is C$ 507 and C$ 480 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$ 500, 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 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Jennifer Bain

Jennifer Bain

Expert on BUF

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.

Good to know

Low seasonJanuary
Cheapest flightC$ 121
Best time to beat the crowds (25% less expensive on average)
Most popular time to fly and prices are also 20% 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$ 121 for a one-way ticket and C$ 340 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 Airbus A319 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 is the only airline alliance operating flights between Buffalo and Chicago.

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

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

  • 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$ 348 or less one-way and C$ 575 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 airline 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.
7.1
American AirlinesOverall score based on 11642 reviews
6.9Entertainment
7.5Boarding
6.4Food
7.2Comfort
7.9Crew
Airline reviews

Requested early boarding to disinfect seat, tray table, etc. before general boarding. Instructed to board after wheelchair passengers. Waited on jet bridge behind 12 wheelchair passengers. Stopped immediately after entering plane to wait for gate agent in rear of plane cleaning a seat that was wet, got to my row and found both seats adjacent to mine already occupied, with the lack of room making it impossible for me to clean my own space and defeating the purpose of my boarding early. Cleaned the armrests and tray table as best I could.

8.0 ExcellentAnonymous, May 2026
RSW - ORD
Read more American Airlines reviews

Requested early boarding to disinfect seat, tray table, etc. before general boarding. Instructed to board after wheelchair passengers. Waited on jet bridge behind 12 wheelchair passengers. Stopped immediately after entering plane to wait for gate agent in rear of plane cleaning a seat that was wet, got to my row and found both seats adjacent to mine already occupied, with the lack of room making it impossible for me to clean my own space and defeating the purpose of my boarding early. Cleaned the armrests and tray table as best I could.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Very good I can’t complain one bit. Thank you American Airlines for making my flight enjoyable and safe!

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

The new planes (American Eagle) are beautiful and especially comfortable. The flight attendants are consistently professional and courteous. And, while it may seem inconsequential, the new liquid tube of coffee creamer—in contrast to the powdered coffee creamer—makes all the difference in a cup of coffee.

I'm not sure American is capable of on-time arrivals and departures. When you land at ORD, you almost always get held on the tarmac because your gate is still occupied. I may have missed my connection, but that ended up up being significantly delayed as well. Once again, I finally got home well after midnight.

Crew at the gate was very crabby and not at all polite. The plane was very hot the entire flight. And the seat cushion was very worn out.

The staff are very, very professional. It's what flying should feel like.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

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

Information on your arrival and departure airports