BUF - ORD

C$ 100 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 21/3. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
C$ 275
Overall average: C$ 436
United Airlines
Sat 2/5Wed 6/5
BUF - ORD • Direct
Cheapest one-way flights
C$ 100
Typical prices: C$ 272-C$ 457
United Airlines
Sat 21/3
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
United Airlines
Cheapest • from C$ 275 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Every day
You can fly direct with American Airlines and United Airlines. Average duration is 2h 07m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+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
January
Cheapest • 28% 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

Sat, 2 May - Wed, 6 May
United Airlines Logo
11:02 a.m. - 12:00 p.m.
BUF
-
ORD
1h 58mdirect
United Airlines Logo
2:13 p.m. - 4:54 p.m.
ORD
-
BUF
1h 41mdirect
C$ 275United Airlines
Fri, 15 May - Mon, 18 May
Frontier Logo
1:08 p.m. - 10:39 p.m.
BUF
-
ORD
10h 31m
1 stop
Frontier Logo
5:01 a.m. - 12:13 p.m.
ORD
-
BUF
6h 12m
1 stop
C$ 276Frontier
Thu, 23 Apr - Sun, 26 Apr
Multiple Airlines Logo
12:35 p.m. - 6:54 p.m.
BUF
-
ORD
7h 19m
1 stop
Multiple Airlines Logo
3:15 p.m. - 11:47 a.m.
ORD
-
BUF
19h 32m
1 stop
C$ 290Multiple Airlines
Fri, 24 Apr - Sun, 26 Apr
Multiple Airlines Logo
12:18 p.m. - 6:54 p.m.
BUF
-
ORD
7h 36m
1 stop
Multiple Airlines Logo
3:15 p.m. - 11:47 a.m.
ORD
-
BUF
19h 32m
1 stop
C$ 295Multiple Airlines
Fri, 15 May - Mon, 18 May
Frontier Logo
1:08 p.m. - 10:39 p.m.
BUF
-
ORD
10h 31m
1 stop
Frontier Logo
5:01 a.m. - 12:13 p.m.
ORD
-
BUF
6h 12m
1 stop
C$ 324Frontier
Sun, 29 Mar - Mon, 4 May
Multiple Airlines Logo
12:50 p.m. - 10:52 a.m.
BUF
-
ORD
23h 02m
1 stop
Multiple Airlines Logo
1:40 p.m. - 12:13 p.m.
ORD
-
BUF
21h 33m
1 stop
C$ 332Multiple Airlines
Thu, 23 Apr - Sun, 26 Apr
Multiple Airlines Logo
12:35 p.m. - 6:54 p.m.
BUF
-
ORD
7h 19m
1 stop
Multiple Airlines Logo
3:31 p.m. - 10:34 a.m.
ORD
-
BUF
18h 03m
2 stops
C$ 345Multiple Airlines
Thu, 23 Apr - Sun, 26 Apr
American Airlines Logo
6:00 p.m. - 7:17 p.m.
BUF
-
ORD
2h 17mdirect
American Airlines Logo
11:40 a.m. - 2:21 p.m.
ORD
-
BUF
1h 41mdirect
C$ 350American Airlines
Thu, 7 May - Sun, 10 May
United Airlines Logo
11:02 a.m. - 12:00 p.m.
BUF
-
ORD
1h 58mdirect
United Airlines Logo
2:13 p.m. - 4:54 p.m.
ORD
-
BUF
1h 41mdirect
C$ 352United Airlines
Sun, 29 Mar - Mon, 4 May
Multiple Airlines Logo
12:50 p.m. - 10:52 a.m.
BUF
-
ORD
23h 02m
1 stop
Multiple Airlines Logo
5:09 p.m. - 12:13 p.m.
ORD
-
BUF
18h 04m
2 stops
C$ 353Multiple 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.

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$ 323 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is C$ 695 and C$ 516 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$ 378, 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 20 weeks before departure.

Find deals
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
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.

Read more
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.

Read more
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.

Read more

Good to know

Low seasonJanuary
Cheapest flightC$ 100
Best time to beat the crowds (29% less expensive on average)
Most popular time to fly and prices are also 18% 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$ 100 for a one-way ticket and C$ 275 for a round-trip.

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

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

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

    The Canadair (Bombardier) Regional Jet CRJ-550 is the aircraft model that flies most regularly on the Buffalo to Chicago flight route.

  • Which airline alliances offer flights from Buffalo to Chicago?

    Star Alliance 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$ 320 or less one-way and C$ 467 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.
7.4
United AirlinesOverall score based on 9342 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

8.0 ExcellentDarly, Feb 2026
LAX - ORD
Read more United Airlines reviews

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

Everything was absolutely wonderful from check in to baggage claim. Staff was very professional and sweet. Will definitely recommend United to family and friends.

They did the one thing that really matters - got to Chicago early.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

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

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

Information on your arrival and departure airports

Buffalo (BUF)
O'Hare Intl (ORD)