$455 Cheap Flights from Buffalo (BUF) to Saint John (YSJ)

View $455 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Buffalo Niagara Intl. Airport (BUF) to Saint John, NB (YSJ)

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Cheap Flights from Buffalo to Saint John (BUF-YSJ)

Prices were available within the past 7 days and start at $455 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ) cost?
Lock in a cheap one-way flight from $455 or cheap return flight from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ)?
Traveling in can help you save, as it's the cheapest month for flights between BUF and YSJ. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ)?
To find the cheapest airline that'll fly you from BUF to YSJ, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ)?
You'll need to book a flight with a layover when traveling from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from BUF to YSJ?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ)?
To reach Saint John Airport (YSJ) on schedule, select a flight that leaves Buffalo Niagara Intl. Airport (BUF) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
Is it cheaper to buy a plane ticket from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ) last-minute?
Last-minute fares from BUF to YSJ are usually more expensive. For the best rates, start searching for flights as soon as possible. That being said, if your travel plans are flexible, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a BUF to YSJ flight and hotel package?
You can save money by securing a BUF to YSJ flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your ideal flights and accommodations, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from Buffalo Niagara Intl. Airport (BUF) to Saint John Airport (YSJ)?
You can usually cancel or reschedule your BUF to YSJ flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Buffalo Niagara Intl.
Destination airport
Saint John
Distance
657 mi

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Buffalo to Saint John Flights

The cheapest times to fly from Buffalo to Saint John

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 Buffalo to Saint John are during the month of . You can find some of the cheapest flights from Buffalo to Saint John with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Buffalo to Saint John

Sunday is one of the best days to book for cheap flights from Buffalo to Saint John: 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 Buffalo to Saint John

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 Buffalo to Saint John in 2025. You can also book with separate airlines for your outbound and return journeys, from $455 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 Buffalo to Saint John 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 Buffalo to Saint John 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.

 

Buffalo to Saint John Flights

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*Available to One Key members.