BUF - ORD

C$ 141 Find Cheap Flights from Buffalo to Chicago – Compare and Save

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 9/9. 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 348
Typical prices: C$ 355-C$ 590
American Airlines
Sat 5/9Sat 5/9
BUF - ORD • 1 stop
Cheapest direct flights
C$ 406
Typical prices: C$ 362-C$ 606
United Airlines
Fri 18/9Tue 22/9
BUF - ORD • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United Economy Plus adds up to 15 cm more legroom than standard economy.
American Main Cabin Extra adds early boarding; BUF security averages 12 minutes.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 358 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with American Airlines and United Airlines. Average duration is 2h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg C$ 271 (round-trip)
Shortest trip • 6h 58m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 51% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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

Sat, 5 Sep - Sat, 5 Sep
American Airlines Logo
6:00 a.m. - 12:12 p.m.
BUF
-
ORD
7h 12m
1 stop
American Airlines Logo
9:10 p.m. - 12:02 a.m.
ORD
-
BUF
1h 52mdirect
C$ 348American Airlines
Fri, 18 Sep - Mon, 21 Sep
Frontier Logo
1:16 p.m. - 12:02 p.m.
BUF
-
ORD
23h 46m
1 stop
Frontier Logo
2:03 p.m. - 12:21 p.m.
ORD
-
BUF
21h 18m
1 stop
C$ 358Frontier
Thu, 10 Sep - Thu, 17 Sep
JetBlue Logo
4:31 p.m. - 9:58 p.m.
BUF
-
ORD
6h 27m
1 stop
JetBlue Logo
10:59 a.m. - 6:58 p.m.
ORD
-
BUF
6h 59m
1 stop
C$ 365JetBlue
Fri, 28 Aug - Sun, 30 Aug
Frontier Logo
11:36 a.m. - 7:59 p.m.
BUF
-
ORD
9h 23m
1 stop
Frontier Logo
7:44 p.m. - 6:09 p.m.
ORD
-
BUF
21h 25m
1 stop
C$ 380Frontier
Fri, 21 Aug - Fri, 28 Aug
Frontier Logo
11:36 a.m. - 7:53 a.m.
BUF
-
ORD
21h 17m
1 stop
Frontier Logo
9:10 p.m. - 6:09 p.m.
ORD
-
BUF
19h 59m
1 stop
C$ 387Frontier
Sat, 29 Aug - Mon, 31 Aug
Frontier Logo
11:36 a.m. - 8:08 p.m.
BUF
-
ORD
9h 32m
1 stop
Frontier Logo
9:10 p.m. - 10:29 a.m.
ORD
-
BUF
12h 19m
2 stops
C$ 390Frontier
Fri, 25 Sep - Sun, 27 Sep
Frontier Logo
1:40 p.m. - 12:02 p.m.
BUF
-
ORD
23h 22m
1 stop
Frontier Logo
2:03 p.m. - 12:55 p.m.
ORD
-
BUF
21h 52m
1 stop
C$ 397Frontier
Fri, 18 Sep - Tue, 22 Sep
United Airlines Logo
10:30 a.m. - 11:29 a.m.
BUF
-
ORD
1h 59mdirect
United Airlines Logo
2:02 p.m. - 4:45 p.m.
ORD
-
BUF
1h 43mdirect
C$ 406United Airlines
Thu, 27 Aug - Sun, 30 Aug
Frontier Logo
9:29 p.m. - 1:20 p.m.
BUF
-
ORD
16h 51m
1 stop
Frontier Logo
7:05 a.m. - 10:29 a.m.
ORD
-
BUF
26h 24m
1 stop
C$ 414Frontier
Fri, 18 Sep - Mon, 21 Sep
American Airlines Logo
6:56 p.m. - 8:15 p.m.
BUF
-
ORD
2h 19mdirect
American Airlines Logo
8:46 a.m. - 11:39 a.m.
ORD
-
BUF
1h 53mdirect
C$ 418American Airlines
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 September.

Flight prices are typical for this route right now.

Flights to Chicago O'Hare Intl Airport from Buffalo usually cost between C$ 349 and C$ 748 in September.
The lowest price found in the past 5 days was C$ 358 on Frontier (18 Sep–21 Sep).

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$ 340 (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$ 537 and C$ 520 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 318 on average.

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 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 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 season

January

Cheapest flight

C$ 141
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (4% more expensive 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 5 days, the lowest price for a flight from Buffalo to Chicago O'Hare Intl Airport was C$ 141 for a one-way ticket and C$ 358 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$ 370 or less one-way and C$ 673 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 11837 reviews
6.4Food
7.5Boarding
7.9Crew
6.8Entertainment
7.2Comfort
Airline reviews

My seat had a worn out cushion, which made it a bit uncomfortable. Other than that, the flight was excellent.

10.0 ExcellentAnonymous, Jul 2026
LAX - ORD
Read more American Airlines reviews

My seat had a worn out cushion, which made it a bit uncomfortable. Other than that, the flight was excellent.

The flight de-boarded after being informed of a 3 hour delay. The gate agent said we could go to lounge. The flight ended up boarding 20 minutes later and I missed it.

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

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

It was good experience this time. The flight was on time.

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

Extreme weather delays. Missed my flight to France and I ended up leaving the plane.

I am very disappointed with american. We have flown American airlines numerous times, as well as other airlines and never had such an experience. My son's flight for Sunday afternoon was cancelled around 11 am. We were told not to do anything bec AA would. After an hour of not seeing a change in his flight status. I called AA. I was on hold for half hour then opted for a call back. That call back never came. So I called again, in meantime I started looking online at my options. No flights were leaving that day from AA. But other airlines were flying out. We needed our son in Chicago asap.i kept calling AA for a callback, but never received one. Finally i called back later in the afternoon and a representative answered the call. She told me there were no flights out till Tuesday morning. I asked how this is possible, I had seen flights from AA and other airlines leaving Monday. She said she checked all NYC airports and there were no AA flights till Tuesday AM. Then I asked about getting on another airline. She responded i would be responsible for that. When I asked how AA would reimburse. She became nasty and told me AA has not responsibility to reimburse anything they will put me in a flight for Tuesday morning. When i explained he must be there Monday by 8am, she told me there's nothing to do and practically hung up. At that point I just asked her to book the Tuesday morning flight. I had this experience with other airlines, cancelled due to weather and they and their reps were much more helpful. Either way Tuesday morning flight was delayed as well. Over an hour! I expect more from AA.

The only problem experienced was a ground stop in Chicago due to weather. But the crew handled everything professionally. They prioritized rebooking those passengers who had connecting flights and then deplaning the other passengers. When the hold was lifted, they efficiently re-boarded all the passengers so that we could depart before our departure limit expired.

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

Information on your arrival and departure airports