$278+ Cheap flights from San Francisco (SFO) to Saint John (YSJ)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/29. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — YSJ
Jun 17 — Jun 241
1 adult, Economy
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Find cheap flights from San Francisco to St John with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to St John
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to St John (YSJ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.
Round-trip from | $621 (Air Canada) |
|---|---|
One-way from | $278 (United Airlines) |
Find flight deals from San Francisco to St John
Cheapest flights from San Francisco to St JohnExplore the most affordable flight options available from San Francisco to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
Explore the most affordable flight options available from San Francisco to St John. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2511:25 pmSFO - YSJ
2 stops20h 25mUnited Airlines
Fri 8/15:55 amYSJ - SFO
2 stops15h 50mUnited Airlines
Deal found 6/10![United Airlines logo]()
$636
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2511:40 amSFO - YSJ
1 stop19h 09mAir Canada
Fri 8/15:55 amYSJ - SFO
1 stop10h 58mAir Canada
Deal found 6/10![Air Canada logo]()
$805
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to St John that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from San Francisco to Saint John that are best for you.
Fly from
San Francisco
Fly to
St John
Route
Depart
Return
Price
San FranciscoSaint John
SFO - YSJ
SFOYSJ
San Francisco
Fri 7/25
11:25 pm-11:50 pm
2 stops20h 25m
Saint John
Fri 8/1
5:55 am-5:45 pm
2 stops15h 50m
$636
San FranciscoSaint John
SFO - YSJ
SFOYSJ
San Francisco
Fri 7/25
11:40 am-10:49 am
1 stop19h 09m
Saint John
Fri 8/1
5:55 am-12:53 pm
1 stop10h 58m
$805
San FranciscoSaint John
SFO - YSJ
SFOYSJ
San Francisco
Sun 6/29
9:15 pm-6:07 pm
2 stops16h 52m
$278
San FranciscoSaint John
SFO - YSJ
SFOYSJ
San Francisco
Sun 6/29
11:50 am-10:50 am
1 stop19h 00m
$375
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.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Saint John
Rainfall in St John by month
Plan your trip to St John by taking into account the average rainfall totals by month.
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.
Temperature in St John by month
Plan your trip to St John by taking into account the average temperature totals by month.
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).
Reviews of airlines servicing St John
Get insights into the airlines that provide service to St John. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St John. Reviews last updated June 12, 2025.
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.0
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.0
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Crew
8.1
Overall
7.4
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.0
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE