ORD - BUF

$75 Find Cheap Flights from Chicago O'Hare Airport to Buffalo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from O'Hare Intl to Buffalo departing on 9/1. 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 Buffalo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Buffalo, 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 Chicago to Buffalo, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$145
Typical prices: $394-$271
Frontier
Wed 5/27Wed 6/3
ORD - BUF • 1 stop
Cheapest non-stop
$237
Typical prices: $387-$277
United Airlines
Wed 6/10Wed 6/17
ORD - BUF • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
AA's Main Cabin Extra includes early boarding perks.
United's Economy Plus offers extra legroom benefits.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $145 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with American Airlines and United Airlines. Average duration is 1h 46m
Direct flights
Direct flights
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Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $205 (round-trip)
Shortest trip • 5h 50m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 55% compared to booking last minute.
Insights
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Insights
When to travel
Cheapest • 31% price drop
Most popular
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buffalo!
Flight Deals
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Flight Deals

Cheap Flights from O'Hare Intl to Buffalo (ORD-BUF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to Buffalo 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 O'Hare Intl to Buffalo

Wed, May 27 - Wed, Jun 3
Frontier Logo
6:55 am - 1:54 pm
ORD
-
BUF
5h 59m
1 stop
Frontier Logo
2:49 pm - 7:51 pm
BUF
-
ORD
6h 02m
1 stop
$145Frontier
Tue, May 26 - Tue, Jun 2
Frontier Logo
1:50 pm - 1:54 pm
ORD
-
BUF
23h 04m
1 stop
Frontier Logo
11:36 am - 7:51 pm
BUF
-
ORD
9h 15m
1 stop
$153Frontier
Wed, May 13 - Tue, May 19
Frontier Logo
6:55 am - 1:54 pm
ORD
-
BUF
5h 59m
1 stop
Frontier Logo
11:36 am - 7:51 pm
BUF
-
ORD
9h 15m
1 stop
$160Frontier
Tue, Jun 9 - Tue, Jun 16
Frontier Logo
1:50 pm - 1:55 pm
ORD
-
BUF
23h 05m
1 stop
Frontier Logo
11:50 am - 8:03 am
BUF
-
ORD
21h 13m
1 stop
$176Frontier
Tue, Jun 9 - Tue, Jun 16
Frontier Logo
1:50 pm - 1:55 pm
ORD
-
BUF
23h 05m
1 stop
Frontier Logo
11:50 am - 8:03 am
BUF
-
ORD
21h 13m
1 stop
$177Frontier
Wed, May 13 - Sat, May 16
Frontier Logo
6:55 am - 1:54 pm
ORD
-
BUF
5h 59m
1 stop
Frontier Logo
12:41 pm - 7:51 pm
BUF
-
ORD
8h 10m
1 stop
$180Frontier
Sun, May 10 - Tue, May 19
Frontier Logo
8:39 am - 8:04 pm
ORD
-
BUF
10h 25m
1 stop
Frontier Logo
11:36 am - 7:51 pm
BUF
-
ORD
9h 15m
1 stop
$181Frontier
Tue, May 26 - Tue, Jun 2
Frontier Logo
1:50 pm - 1:54 pm
ORD
-
BUF
23h 04m
1 stop
Frontier Logo
7:52 pm - 7:51 pm
BUF
-
ORD
24h 59m
2 stops
$184Frontier
Sun, May 10 - Tue, May 26
Frontier Logo
8:39 am - 8:04 pm
ORD
-
BUF
10h 25m
1 stop
Frontier Logo
11:36 am - 7:41 pm
BUF
-
ORD
9h 05m
1 stop
$186Frontier
Wed, Jun 10 - Wed, Jun 17
Frontier Logo
6:55 am - 1:55 pm
ORD
-
BUF
6h 00m
1 stop
Frontier Logo
2:50 pm - 7:53 pm
BUF
-
ORD
6h 03m
1 stop
$188Frontier
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Buffalo flights

Get data-powered insights and trends into flights from O'Hare Intl to Buffalo to help you find the cheapest flights, the best time to fly and much more.

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

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

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Buffalo?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Buffalo clicked on KAYAK for each day over the last 12 months.

For Chicago O'Hare Airport to Buffalo, Tuesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Buffalo back to Chicago O'Hare Airport, the best deals are generally found on Friday, with Sunday being the most expensive.

What is the cheapest month to fly from Chicago O'Hare Intl Airport to Buffalo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Buffalo, 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 Chicago O'Hare Intl Airport to Buffalo is January, where tickets cost $230 (return) on average. On the other hand, the most expensive months are April and March, where the average cost of round-trip tickets is $492 and $465 respectively.

Can I save money by flying with a layover from Chicago O'Hare Intl Airport to Buffalo?

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 $349 on average.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Buffalo?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Buffalo, 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 Chicago O'Hare Intl Airport to Buffalo, you should book around 5 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

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

 
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.

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.

Good to know

Low seasonFebruary
Cheapest flight$75
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Chicago O'Hare Airport to Buffalo

When to book flights from O'Hare Intl to Buffalo

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Buffalo 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 Chicago O'Hare Airport to Buffalo flights

  • What is the cheapest flight from Chicago O'Hare Intl Airport to Buffalo?

    In the last 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Buffalo was $75 for a one-way ticket and $145 for a round-trip.

  • Do I need a passport to fly between Chicago O'Hare Airport and Buffalo?

    A passport is not required to fly from Chicago O'Hare Airport to Buffalo.

  • Which airports will I be using when flying from Chicago O'Hare Airport to Buffalo?

    Chicago O'Hare Airport airport is called Chicago O'Hare Intl and the only airport in Buffalo is Buffalo.

  • Which airlines offer Wi-Fi service onboard planes from Chicago O'Hare Airport to Buffalo?

    American Airlines, JetBlue, Alaska Airlines, Porter Airlines, and Air Canada offer inflight Wi-Fi service on the Chicago O'Hare Airport to Buffalo flight route.

  • Which aircraft models fly most regularly from Chicago O'Hare Airport to Buffalo?

    The Airbus A319 is the aircraft model that flies most regularly on the Chicago O'Hare Airport to Buffalo flight route.

  • Which airline alliances offer flights from Chicago O'Hare Airport to Buffalo?

    Star Alliance, and oneworld are the airline alliances operating flights between Chicago O'Hare Airport and Buffalo, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Chicago O'Hare Airport to Buffalo?

    There are nonstop flights from Chicago O'Hare Airport to Buffalo on a daily basis.

  • Which is the best airline for flights from Chicago to Buffalo, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Buffalo are United Airlines and American Airlines. With an average price for the route of $353 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 $311 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport to Buffalo?

    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 Chicago O'Hare Airport to Buffalo.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago O'Hare Airport to Buffalo?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from Chicago O'Hare Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago O'Hare Airport to Buffalo?

    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 Buffalo with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and BUF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago O'Hare Airport to Buffalo?

    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 Buffalo from Chicago O'Hare Airport 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 Chicago O'Hare Intl Airport to Buffalo

  • Looking for a cheap flight? 25% of our users found flights on this route for $194 or less one-way and $349 or less round-trip.

Prefer to fly direct from Chicago O'Hare Airport to Buffalo?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago O'Hare Intl to Buffalo.
Find which airlines fly direct from Chicago O'Hare Intl Airport to Buffalo Airport, which days they fly and book direct flights.

Direct departures

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 direct flights

Direct returns

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 direct flights

Reviews of the top 4 airlines serving from O'Hare Intl to Buffalo

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Buffalo. 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 O'Hare Intl to Buffalo? 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 9679 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
Airline reviews

A long delay. Don't travel late in the day.

8.0 ExcellentTimothy, Apr 2026
ORD - CID
Read more United Airlines reviews

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Flight was as expected. But it was delayed an hour. Also, my luggage got damaged. So that sucked especially since the damage made navigating the airport difficult. Walking to get ground transportation is sooo far away now and my checked bag was difficult to carry.

Flight team was very courteous only complaint wS the boarding process and mandatory bag check

It was a great flight got here on time wish they would give headphones out for free

The flight was delayed 4 hours and the JetBlue people at the counter kept lying to us and telling us it was due to weather however all other flights were going in and out of NY and FL. Then they lied that the plane had to stop to refuel. Then they lied and said the plane needed a tire change. JetBlue is the worst. Then they gave a lot of people meal vouchers however I didn’t know they did that and they didn’t offer anything to me.

Disaster This is why I stick to delta You get what you pay for

I had a great experience flying with JetBlue and would always choose JetBlue over the other airlines. I am also very bummed that they will discontinue flying to Belize very soon. SAD

I was traveling with two small kids and our TV s were the only ones not working. Informed the flight attendant who did nothing about them.

I was especially impressed without efficiently the crew got passengers on and off. One of the stewards was slightly gruff, I thought. No big deal but that's what I noticed.

Delayed our flight to accommodate another flight but didn’t make the decision to do so until we were supposed to board despite having all the same information hours prior. Arrived so delayed that we didn’t get a gate and had to deplane on the tarmac and get bussed to terminal in the rain after 1am. Arrived to the terminal and due to construction could not get a ride share - had to either take the air train to Howard beach or stand in line with 200 other people waiting for a taxi.

Well, its a hit or miss when boarding most of the time your employees just let everyone enter immediately In one bum rush. Then out of know where tell the passengers only let A can enter then b then c etc. So make a decision and stick to it. Do it by alphabet and have famn strick compliance. Let the public know. That makes easier on passengers.

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

I almost missed my flight and they helped me out enormously

Delays experienced in boarding/take off due to incoming plane delayed. However, the boarding time/depart time in the app was significantly delayed in providing these updates. Usually not updated until an hour after we should have already boarded. Poorly managed.

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Typical AA - late by 90+ mn. Gate changed twice... Changed the departure time 6 times No explanation, no communication on reasons for delay I travel with AA twice a year... and it is consistently very poor.. I will continue to use AA only when i have to.

Pretty awful. 2 hours late due to operational issues and finally deboarded around 2am.

The gate got changed several times and the flight was delayed over an hour. Awful experience

American continues to decline in their customer service and its beyond disappointing.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

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

Information on your arrival and departure airports