$275 Cheap Flights from Ottawa (YOW) to Buffalo (BUF)

View $275 flight on Thu, Apr 30, 2026Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Ottawa to Buffalo (YOW-BUF)

Prices were available within the past 7 days and start at $275 for one-way flights and $512 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$512 Roundtrip, found 5 days ago
$512
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $512 found 5 days ago
Porter Airlines
Mon, May 11 - Sat, May 16
YOW
Ottawa
BUF
Buffalo
$514 Roundtrip, found 21 hours ago
$514
Roundtrip
found 21 hours ago
Select Porter Airlines flight, departing Mon, May 11 from Ottawa to Buffalo, returning Sat, May 16, priced at $514 found 21 hours ago
Air Canada
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$526 Roundtrip, found 5 days ago
$526
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $526 found 5 days ago
Air Canada
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$537 Roundtrip, found 5 days ago
$537
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $537 found 5 days ago
Porter Airlines
Mon, May 11 - Sun, May 17
YOW
Ottawa
BUF
Buffalo
$544 Roundtrip, found 21 hours ago
$544
Roundtrip
found 21 hours ago
Select Porter Airlines flight, departing Mon, May 11 from Ottawa to Buffalo, returning Sun, May 17, priced at $544 found 21 hours ago
Air Canada
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$546 Roundtrip, found 5 days ago
$546
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $546 found 5 days ago
Air Canada
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$550 Roundtrip, found 5 days ago
$550
Roundtrip
found 5 days ago
Select Air Canada flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $550 found 5 days ago
Porter Airlines
Wed, May 13 - Sat, May 16
YOW
Ottawa
BUF
Buffalo
$551 Roundtrip, found 21 hours ago
$551
Roundtrip
found 21 hours ago
Select Porter Airlines flight, departing Wed, May 13 from Ottawa to Buffalo, returning Sat, May 16, priced at $551 found 21 hours ago
United
Tue, Mar 10 - Tue, Mar 17
YOW
Ottawa
BUF
Buffalo
$575 Roundtrip, found 5 days ago
$575
Roundtrip
found 5 days ago
Select United flight, departing Tue, Mar 10 from Ottawa to Buffalo, returning Tue, Mar 17, priced at $575 found 5 days ago
American Airlines
Fri, May 15 - Mon, May 18
YOW
Ottawa
BUF
Buffalo
$632 Roundtrip, found 21 hours ago
$632
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, May 15 from Ottawa to Buffalo, returning Mon, May 18, priced at $632 found 21 hours ago

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Find the cheapest month to fly from Ottawa (YOW) to Buffalo (BUF)

October is typically the cheapest month to fly

From $463 - $844 per traveler.

Frequently asked questions

How much does a flight from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF) cost?
Grab a cheap one-way flight from $275 or cheap return flight from $512 from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)?
March is the cheapest month to fly from YOW to BUF. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)?
To find the cheapest airline flying from YOW to BUF, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)?
Direct flights from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from YOW to BUF?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)?
To avoid potential delays on the Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Buffalo from Macdonald-Cartier Intl. Airport (YOW)?
Billy Bishop Toronto City Airport (YTZ) is the only airport in Buffalo with direct flights from Macdonald-Cartier Intl. Airport (YOW). Compare the available options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF) last-minute?
Holding off until just before your departure to book your flight from YOW to BUF often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of snagging a bargain.
Is it cheaper to book a YOW to BUF flight and hotel package?
Compared with arranging hotels and flights separately, booking a YOW to BUF flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Just pick your flights and choose from our wide range of stays, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Buffalo Niagara Intl. Airport (BUF)?
Usually, it's possible to cancel or reschedule your YOW to BUF flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Macdonald-Cartier Intl.
Destination airport
Buffalo Niagara Intl.
Airlines serving
Air Canada, American Airlines, United
Roundtrip price
$512
Distance
224 mi

Book with confidence

Ottawa to Buffalo Flights

The cheapest times to fly from Ottawa to Buffalo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ottawa to Buffalo are during the month of March. You can find some of the cheapest flights from Ottawa to Buffalo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ottawa to Buffalo

Sunday is one of the best days to book for cheap flights from Ottawa to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ottawa to Buffalo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ottawa to Buffalo in 2026. You can also book with separate airlines for your outbound and return journeys, from $275 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ottawa to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ottawa to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ottawa to Buffalo Flights

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.