Cheap flights from Saint John to San Francisco from C$ 649

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Saint John to San Francisco departing on 15/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:35 a.m. - 3:32 p.m.
YSJ
-
SFO
13h 57m
2 stops
Air Canada Logo
7:30 a.m. - 11:52 p.m.
SFO
-
YSJ
12h 22m
2 stops
C$ 649Air Canada
Wed, 15 Apr - Sat, 18 Apr
Air Canada Logo
5:35 a.m. - 1:25 p.m.
YSJ
-
SFO
11h 50m
1 stop
Air Canada Logo
8:30 a.m. - 11:52 p.m.
SFO
-
YSJ
11h 22m
1 stop
C$ 701Air Canada
Wed, 15 Apr - Sat, 18 Apr
United Airlines Logo
5:35 a.m. - 9:34 p.m.
YSJ
-
SFO
19h 59m
3 stops
United Airlines Logo
12:45 a.m. - 11:52 p.m.
SFO
-
YSJ
19h 07m
2 stops
C$ 723United Airlines
Wed, 15 Apr - Fri, 17 Apr
Air Canada Logo
5:35 a.m. - 3:32 p.m.
YSJ
-
SFO
13h 57m
2 stops
Air Canada Logo
7:30 a.m. - 11:52 p.m.
SFO
-
YSJ
12h 22m
2 stops
C$ 760Air Canada
Wed, 15 Apr - Sat, 18 Apr
Air Canada Logo
5:35 a.m. - 1:25 p.m.
YSJ
-
SFO
11h 50m
1 stop
Air Canada Logo
4:15 p.m. - 11:52 p.m.
SFO
-
YSJ
27h 37m
1 stop
C$ 810Air Canada
Wed, 15 Apr - Sat, 18 Apr
United Airlines Logo
5:35 a.m. - 9:34 p.m.
YSJ
-
SFO
19h 59m
3 stops
United Airlines Logo
11:52 p.m. - 11:52 p.m.
SFO
-
YSJ
20h 00m
2 stops
C$ 834United Airlines
Wed, 15 Apr - Sat, 18 Apr

United Airlines flights from Saint John to San Francisco

Our best United Airlines deals on Saint John to San Francisco flight tickets
United Airlines
15 Apr
YSJ5:35 a.m.Saint John
19h 59m
3 stops
SFO9:34 p.m.San Francisco
17 Apr
SFO12:45 a.m.San Francisco
19h 07m
2 stops
YSJ11:52 p.m.Saint John
C$ 723
United Airlines
15 Apr
YSJ5:35 a.m.Saint John
19h 59m
3 stops
SFO9:34 p.m.San Francisco
18 Apr
SFO11:52 p.m.San Francisco
20h 00m
2 stops
YSJ11:52 p.m.Saint John
C$ 834

Air Canada flights from Saint John to San Francisco

Our best Air Canada deals on Saint John to San Francisco flight tickets
Air Canada
15 Apr
YSJ5:35 a.m.Saint John
13h 57m
2 stops
SFO3:32 p.m.San Francisco
18 Apr
SFO7:30 a.m.San Francisco
12h 22m
2 stops
YSJ11:52 p.m.Saint John
C$ 649
Air Canada
15 Apr
YSJ5:35 a.m.Saint John
11h 50m
1 stop
SFO1:25 p.m.San Francisco
18 Apr
SFO8:30 a.m.San Francisco
11h 22m
1 stop
YSJ11:52 p.m.Saint John
C$ 701
Air Canada
15 Apr
YSJ5:35 a.m.Saint John
13h 57m
2 stops
SFO3:32 p.m.San Francisco
18 Apr
SFO7:30 a.m.San Francisco
12h 22m
2 stops
YSJ11:52 p.m.Saint John
C$ 760

momondo Fare Finder

 
Customize your flight search to find flights from Saint John to San Francisco 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, momondo users made 96,600 searches. Data last updated 17 January 2026.
Use the filters below to find and compare flights from Saint John to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-3:32 p.m.

2 stops13h 57m

San Francisco

Sat 18/4

7:30 a.m.-11:52 p.m.

2 stops12h 22m

C$ 649

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-1:25 p.m.

1 stop11h 50m

San Francisco

Sat 18/4

8:30 a.m.-11:52 p.m.

1 stop11h 22m

C$ 701

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-9:34 p.m.

3 stops19h 59m

San Francisco

Fri 17/4

12:45 a.m.-11:52 p.m.

2 stops19h 07m

C$ 723

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-3:32 p.m.

2 stops13h 57m

San Francisco

Sat 18/4

7:30 a.m.-11:52 p.m.

2 stops12h 22m

C$ 760

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-1:25 p.m.

1 stop11h 50m

San Francisco

Sat 18/4

4:15 p.m.-11:52 p.m.

1 stop27h 37m

C$ 810

Saint JohnSan Francisco

YSJ - SFO

YSJSFO

Saint John

Wed 15/4

5:35 a.m.-9:34 p.m.

3 stops19h 59m

San Francisco

Sat 18/4

11:52 p.m.-11:52 p.m.

2 stops20h 00m

C$ 834

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Saint John to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Saint John to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Saint John to San Francisco (YSJ to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Saint John to San Francisco

Fastest flight time

9h 10m

Direct flights

None
The fastest flight from Saint John to San Francisco takes 9h 10m
There are no direct flights from Saint John to San Francisco. There are no popular flight routes from Saint John to San Francisco.
  • How far is Saint John to San Francisco by plane?

    A flight from Saint John to San Francisco will travel around 4663.0 km. By plane, this route typically takes 9h 10m.

  • When did momondo last update prices for flights from Saint John Airport to San Francisco Airport?

    Prices for flights from Saint John Airport to San Francisco Airport refresh daily.

  • How old do you have to be to fly from Saint John Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Saint John Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Saint John to San Francisco?

    Confirm your travel details to search for the latest offers for flights from Saint John to San Francisco. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Saint John to San Francisco with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Mateo
Belmont
Los Altos
San Bruno
Santa Cruz
Newark
Milpitas
Carmel-by-the-Sea
Turlock
South San Francisco
Palo Alto
Burlingame
Santa Clara
Cupertino
Mill Valley
Pacifica
Morgan Hill
Los Banos
Mountain View
Woodland

Why use momondo?

Why should I use momondo to find a flight deal from Saint John to San Francisco?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Saint John to San Francisco. momondo saves you time and could save you money on your trip.

Can I find flights from Saint John to San Francisco with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Francisco from Saint John which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Saint John to San Francisco?

Once you have performed a search for Saint John to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Saint John to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Saint John. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Mon 16/2
Mon 23/2

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