In terms of precipitation, rainfall in Saint John ranges from 3.2 - 5.3 inches per month. November is typically the wettest month, when rainfall can reach 5.3 in. August is typically the driest time to visit Saint John when rainfall is around 3.2 in.

If weather is an important factor for your trip to Saint John, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 17.6 F).

What is the cheapest time of day to fly from SFO to YSJ?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Saint John as you normally would.

Most accurate provider : When it comes to deals on San Francisco-Saint John flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Saint John flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Saint John flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Francisco-Saint John flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Saint John flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from San Francisco to St John that include hotel bookings?

Yes. In addition to deals on San Francisco to St John flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Francisco to St John?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to St John.

Can I find deals for business class flights from San Francisco to St John?

Yes. Cheapflights offers flight deals from San Francisco to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$367+ Cheap Flights from San Francisco to Saint John

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Cheap flight deals from San Francisco to St John

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars

Provider with most accurate pricing for San Francisco-Saint John flight deals.

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Provider most trusted by Cheapflights users for San Francisco-Saint John flights.

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Find flight deals from San Francisco to St John

One-way flights from San Francisco to St John
Search for one-way flight options from San Francisco to St John. Find affordable one-way fares based on user searches. Data last updated October 16, 2025.

Fri 11/1411:15 pmSFO - YSJ

2 stops12h 18mAir Canada

Deal found 10/16

$367

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Saint John that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSaint John

SFO - YSJ

SFOYSJ

San Francisco

Fri 11/14

11:15 pm-3:33 pm

2 stops12h 18m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Compare providers for flights from San Francisco to St John

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to St John in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Francisco-Saint John flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Saint John flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Saint John flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Francisco-Saint John flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Saint John flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Francisco to St John

Have a flexible travel schedule? Discover the best time to fly to St John from San Francisco with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Can I find deals for flights from San Francisco to St John that include hotel bookings?
Yes. In addition to deals on San Francisco to St John flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Francisco to St John?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to St John.
Can I find deals for business class flights from San Francisco to St John?
Yes. Cheapflights offers flight deals from San Francisco to St John by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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