Cheap Flights from San Francisco (SFO) to St. Leonard (YSL)

Popular airlines from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL) cost?
Snag a cheap one-way flight or cheap return flight from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between SFO and YSL. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest SFO to YSL flight.
How many flights per day from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)?
There aren't any daily nonstop flights from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SFO to YSL?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)?
To avoid potential delays on the San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL) route, fly before 3 PM. Later departures 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.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL) last-minute?
Last-minute fares from SFO to YSL are typically more expensive. For the best prices, start looking for flights as soon as possible. That being said, if you're flexible with your travel plans, you may find a cheap fare just before your departure.
Is it cheaper to book a SFO to YSL flight and hotel package?
You can save money by securing a SFO to YSL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After selecting your preferred accommodations and flights, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to St. Leonard, NB (YSL)?
In most cases, you can cancel or reschedule your SFO to YSL flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you need further information, go to our Customer Service portal.

Travel information

Origin airport
San Francisco Intl.
Destination airport
St. Leonard
Distance
2801 mi

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San Francisco to St. Leonard Flights

The cheapest times to fly from San Francisco to St. Leonard

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 San Francisco to St. Leonard are during the month of . You can find some of the cheapest flights from San Francisco to St. Leonard with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to St. Leonard

Sunday is one of the best days to book for cheap flights from San Francisco to St. Leonard: 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 San Francisco to St. Leonard

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 San Francisco to St. Leonard in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 San Francisco to St. Leonard 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 San Francisco to St. Leonard 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.

 

San Francisco to St. Leonard Flights

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*Available to One Key members.