BUF - ORD

C$ 118 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 13/1. 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$ 178
Overall average: C$ 629
Frontier
Mon 2/2Thu 5/2
BUF - ORD • 1 stop
Cheapest direct flights
C$ 307
Typical prices: C$ 366-C$ 552
United Airlines
Thu 25/12Thu 1/1
BUF - ORD • Direct
Our travellers' advice
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
Frontier
Cheapest • from C$ 178 (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 48% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 19% price drop
August
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

Mon, 2 Feb - Thu, 5 Feb
Frontier Logo
1:39 p.m. - 10:46 p.m.
BUF
-
ORD
10h 07m1 stop
Frontier Logo
5:40 a.m. - 12:44 p.m.
ORD
-
BUF
6h 04m1 stop
C$ 178Frontier
Mon, 2 Feb - Thu, 5 Feb
Frontier Logo
1:39 p.m. - 10:46 p.m.
BUF
-
ORD
10h 07m1 stop
Frontier Logo
5:40 a.m. - 12:44 p.m.
ORD
-
BUF
6h 04m1 stop
C$ 223Frontier
Mon, 2 Feb - Thu, 5 Feb
Frontier Logo
1:39 p.m. - 10:46 p.m.
BUF
-
ORD
10h 07m1 stop
Frontier Logo
5:40 a.m. - 12:44 p.m.
ORD
-
BUF
6h 04m1 stop
C$ 224Frontier
Wed, 7 Jan - Fri, 9 Jan
JetBlue Logo
10:00 a.m. - 5:43 p.m.
BUF
-
ORD
8h 43m1 stop
JetBlue Logo
7:45 a.m. - 2:30 p.m.
ORD
-
BUF
5h 45m1 stop
C$ 235JetBlue
Thu, 15 Jan - Sun, 25 Jan
JetBlue Logo
10:00 a.m. - 5:43 p.m.
BUF
-
ORD
8h 43m1 stop
JetBlue Logo
7:45 a.m. - 2:30 p.m.
ORD
-
BUF
5h 45m1 stop
C$ 253JetBlue
Mon, 4 May - Wed, 6 May
JetBlue Logo
9:45 a.m. - 2:20 p.m.
BUF
-
ORD
5h 35m1 stop
JetBlue Logo
10:35 a.m. - 6:44 p.m.
ORD
-
BUF
7h 09m1 stop
C$ 267JetBlue
Thu, 15 Jan - Fri, 16 Jan
JetBlue Logo
10:00 a.m. - 5:43 p.m.
BUF
-
ORD
8h 43m1 stop
JetBlue Logo
7:45 a.m. - 2:30 p.m.
ORD
-
BUF
5h 45m1 stop
C$ 271JetBlue
Mon, 4 May - Sat, 9 May
JetBlue Logo
9:45 a.m. - 2:20 p.m.
BUF
-
ORD
5h 35m1 stop
JetBlue Logo
9:30 a.m. - 4:34 p.m.
ORD
-
BUF
6h 04m1 stop
C$ 285JetBlue
Mon, 4 May - Fri, 8 May
JetBlue Logo
9:45 a.m. - 2:20 p.m.
BUF
-
ORD
5h 35m1 stop
JetBlue Logo
3:15 p.m. - 11:55 p.m.
ORD
-
BUF
7h 40m1 stop
C$ 286JetBlue
Mon, 4 May - Mon, 11 May
JetBlue Logo
9:45 a.m. - 2:20 p.m.
BUF
-
ORD
5h 35m1 stop
JetBlue Logo
3:15 p.m. - 11:55 p.m.
ORD
-
BUF
7h 40m1 stop
C$ 299JetBlue
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 January, where tickets cost C$ 373 (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$ 629 and C$ 525 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$ 425, 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 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 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.
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.

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

Good to know

Low seasonMarch
Cheapest flightC$ 118
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly and prices are also 19% 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$ 118 for a one-way ticket and C$ 178 for a round-trip.

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

    American Airlines, JetBlue, Air Canada, 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$ 563 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$ 458 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$ 274 or less one-way and C$ 621 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 9094 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

10.0 ExcellentMichele, Dec 2025
RSW - ORD
Read more United Airlines reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Very bad! They kept delaying my flight and wouldn’t do anything about it

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Another delayed flight. When the delays exceed the duration of the flight, it’s a problem.

After boarding the plane in Chicago, the passengers were told that there was a technical problem with the plane. Passengers remained on the plane as they tried to fix the problem. After what was probably an hour passengers were told that there was a need to change planes as the problem was not solved. Passengers disembarked and boarded another plane. After taxing to the runway and waiting for takeoff, passengers were told that owing to the thunderstorm the flight was unable to take off but would try and reroute. After some time passengers were told there wasn't enough fuel for the new route and the plane had to return to the gate for additional fuel. after another log delay the flight got underway. On the plane there was food, drinks, ice or entertainment. We were a glass of water, which appeared rationed. Flight arrived about 5 hours late. The pilot was fantastic and communicated with the passengers throughout the ordeal.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Trip was great. A wild landing in Ottawa with the wind and rain, but the pilot did a great job. Always love flying United.👍

Excellent experience. Starting with the agent at the Premier bag drop who noticed I was very early for my scheduled flight and offered to rebook me on an earlier flight with my seat preference. She would not let me leave the counter until she knew that all of the changes and new boarding pass showed up on my United app. At the gate, the flight boarded quickly such that we departed early and the flight was smooth. We arrived 20 minutes early at ORD and I was able to be home in time for dinner. One of the best flights I've had.

Salina to travers city was great! But the sept 24 Tranverse city was not! Traverse city to chichago was cancelled, i went to Denver & got to Salina 6 hours later!

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

It was a typical flight. We had a delay which seems to be the normality now. And we had no in flight service due to conditions.

After we landed we sat on the tarmac for 1.5 hours waiting to get to our gate. Ridiculous.

Terrible. Flight delayed for more than 8 hours with only a $12 meal voucher provided for the inconvenience. The airplane did not have breaks on arrival yet they still made us go through the motions and board on time knowing we could not take off then sit for 40+ minutes before having to get of the time. A complete waste of my time. I cannot believe they can stay business with these shenanigans. I’ll avoid this company like the plague moving forward as the lack of accountability is disgraceful.

This was the best 2 flights I have had with American out of SGF. Great crew both flights.

Excellent - explanations were clear staff was nice and flight was comfortable

Lost bag and 2 days no word leaving for cruise no clothes or stuff

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.

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

Information on your arrival and departure airports