BUF - ORD

C$ 145 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 19/5. 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

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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Cheap Flight Deals 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.

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Buffalo to O'Hare Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
JetBlue Logo
3:05 p.m. - 9:54 p.m.BUF-ORD
7h 49m1 stop
JetBlue Logo
4:03 p.m. - 9:54 p.m.ORD-BUF
4h 51m1 stop
C$ 293JetBlue
Find Deal
Tue, 6 May - Fri, 9 May
Frontier Logo
3:51 p.m. - 11:11 p.m.BUF-ORD
8h 20m1 stop
Frontier Logo
4:15 p.m. - 9:01 a.m.ORD-BUF
15h 46m1 stop
C$ 296Frontier
Find Deal
Thu, 15 May - Sun, 18 May
American Airlines Logo
6:00 p.m. - 6:57 p.m.BUF-ORD
1h 57mdirect
American Airlines Logo
2:45 p.m. - 5:24 p.m.ORD-BUF
1h 39mdirect
C$ 361American Airlines
Find Deal
Wed, 14 May - Wed, 21 May
American Airlines Logo
12:40 p.m. - 4:13 p.m.BUF-ORD
4h 33m1 stop
American Airlines Logo
7:05 a.m. - 9:41 a.m.ORD-BUF
1h 36mdirect
C$ 374American Airlines
Find Deal
Wed, 14 May - Wed, 21 May
Delta Logo
6:00 a.m. - 10:03 a.m.BUF-ORD
5h 03m1 stop
Delta Logo
6:18 p.m. - 12:40 a.m.ORD-BUF
5h 22m1 stop
C$ 387Delta
Find Deal
Tue, 20 May - Tue, 20 May
United Airlines Logo
6:45 a.m. - 7:43 a.m.BUF-ORD
1h 58mdirect
United Airlines Logo
6:35 p.m. - 9:22 p.m.ORD-BUF
1h 47mdirect
C$ 404United Airlines
Find Deal
Thu, 8 May - Thu, 15 May
United Airlines Logo
6:00 a.m. - 9:44 a.m.BUF-ORD
4h 44m1 stop
United Airlines Logo
7:25 a.m. - 10:12 a.m.ORD-BUF
1h 47mdirect
C$ 418United Airlines
Find Deal
Thu, 8 May - Thu, 15 May
Southwest Logo
6:00 a.m. - 4:45 p.m.BUF-ORD
11h 45m2 stops
Southwest Logo
6:00 a.m. - 2:10 p.m.ORD-BUF
7h 10m1 stop
C$ 422Southwest
Find Deal
Sat, 31 May - Mon, 2 Jun
Delta Logo
6:00 a.m. - 12:20 p.m.BUF-ORD
7h 20m1 stop
Delta Logo
7:10 a.m. - 12:10 p.m.ORD-BUF
4h 00m1 stop
C$ 432Delta
Find Deal
Sat, 17 May - Wed, 21 May
Southwest Logo
11:35 a.m. - 5:55 p.m.BUF-ORD
7h 20m1 stop
Southwest Logo
4:00 p.m. - 12:05 a.m.ORD-BUF
7h 05m2 stops
C$ 459Southwest
Find Deal
Thu, 29 May - Sun, 1 Jun

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

 
Snippets provided in this section are AI-generated based on a summarization 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 specific 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

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$ 395 (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$ 678 and C$ 541 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$ 537, 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. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low season

March

High season

August

Cheapest flight

C$ 145
Best time to beat the crowds but there is an average 10% increase in price.
Most popular time to fly and prices are also 12% 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$ 102 for a one-way ticket and C$ 207 for a round-trip.

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

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

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

    The Boeing 737-700 Passenger/BBJ1 (winglets) 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$ 521 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$ 423 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.

See more FAQs

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$ 288 or less one-way and C$ 633 or less round-trip.

Prefer to fly direct from Buffalo to Chicago?

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

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Tuesday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Wednesday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Thursday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Friday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Saturday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

Sunday

ANA,Air Canada,Air New Zealand, +10 more

ANA,Air Canada, +11 more

See more nonstop flights

Direct returns

Chicago O'Hare Intl to Buffalo

Monday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Tuesday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Wednesday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Thursday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Friday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Saturday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

Sunday

ANA,Air Canada,Air New Zealand, +11 more

ANA,Air Canada, +12 more

See more nonstop flights
See more nonstop flights

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 8636 reviews
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
Airline reviews

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

2.0 MediocreJ.C., Mar 2025COS - ORD
Read more United Airlines reviews

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

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

They canceled our flight and left us stranded to figure it out

Everything was very good. Was able to change a make run flight leaving on direct earlier in the app -seamless!!! Well done

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

Delayed due to no crew. On a major holiday travel day.

Other than being delayed 5.5 hours and having to get a hotel because I missed my connecting flight, it was an okay flight. No in-flight Wi-Fi or entertainment.

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

Information on your arrival and departure airports

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