When did momondo last update prices for flights from Belfast Intl Airport to San Francisco Airport?

Prices for flights from Belfast Intl Airport to San Francisco Airport were last updated today.

How many operators does momondo search for flights from Belfast Intl Airport to San Francisco Airport?

There is 1 operator available for flights from Belfast Intl Airport to San Francisco Airport as of August 2026.

How old do you have to be to fly from Belfast Intl Airport to San Francisco Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast Intl Airport to San Francisco Airport.

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

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£651 Cheap Flights from Belfast Intl Airport to San Francisco in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Belfast Intl Airport to San Francisco

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

16:35 - 14:40BFS Belfast Intl-SFO San Francisco

30h 05m2 stops Birmingham Kastrup Copenhagen

16:45 - 23:00SFO San Francisco-BFS Belfast Intl

22h 15m2 stops Kastrup Copenhagen Birmingham

£669Multiple Airlines

Wed, 9 Sep - Tue, 15 Sep

21:10 - 21:49BFS Belfast Intl-SFO San Francisco

32h 39m2 stops London Gatwick Toronto Pearson Intl

08:10 - 21:55SFO San Francisco-BFS Belfast Intl

29h 45m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat London Stansted

£694Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

20:15 - 21:49BFS Belfast Intl-SFO San Francisco

33h 34m2 stops London Gatwick Toronto Pearson Intl

08:10 - 21:55SFO San Francisco-BFS Belfast Intl

29h 45m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat London Stansted

£695Multiple Airlines

Fri, 18 Sep - Sun, 27 Sep

06:05 - 21:49BFS Belfast Intl-SFO San Francisco

47h 44m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

08:10 - 15:20SFO San Francisco-BFS Belfast Intl

23h 10m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat Nottingham East Midlands

£717Multiple Airlines

Fri, 18 Sep - Sun, 27 Sep

21:10 - 21:55BFS Belfast Intl-SFO San Francisco

32h 45m3 stops London Gatwick Toronto Pearson Intl Calgary

08:10 - 21:55SFO San Francisco-BFS Belfast Intl

29h 45m3 stops Montreal Pierre Elliott Trudeau Intl Barcelona-El Prat London Stansted

£734Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

20:55 - 11:45BFS Belfast Intl-SFO San Francisco

22h 50m2 stops Birmingham Amsterdam Schiphol

15:05 - 19:20SFO San Francisco-BFS Belfast Intl

20h 15m2 stops Paris Charles de Gaulle Birmingham

£760Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

06:15 - 10:20BFS Belfast Intl-SFO San Francisco

36h 05m3 stops Paris Charles de Gaulle Calgary Vancouver Intl

08:30 - 15:15SFO San Francisco-BFS Belfast Intl

22h 45m2 stops Toronto Pearson Intl Manchester

£767Multiple Airlines

Wed, 9 Sep - Tue, 15 Sep

06:10 - 21:59BFS Belfast Intl-SFO San Francisco

47h 49m3 stops London Gatwick Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

15:05 - 23:05SFO San Francisco-BFS Belfast Intl

24h 00m2 stops Paris Charles de Gaulle Edinburgh Turnhouse

£783Multiple Airlines

Mon, 7 Sep - Mon, 14 Sep

21:10 - 21:49BFS Belfast Intl-SFO San Francisco

32h 39m2 stops London Gatwick Toronto Pearson Intl

13:45 - 17:25SFO San Francisco-BFS Belfast Intl

19h 40m2 stops Amsterdam Schiphol Edinburgh Turnhouse

£800Multiple Airlines

Sun, 20 Sep - Sun, 27 Sep

06:15 - 23:20BFS Belfast Intl-SFO San Francisco

25h 05m3 stops Paris Charles de Gaulle Calgary Vancouver Intl

11:35 - 23:00SFO San Francisco-BFS Belfast Intl

27h 25m3 stops Toronto Pearson Intl Frankfurt am Main Birmingham

£813Multiple Airlines

Wed, 9 Sep - Tue, 15 Sep

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Use the filters below to find and compare flights from Belfast Intl Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 9/9

16:35-14:40

2 stops30h 05m

San Francisco

Tue 15/9

16:45-23:00

2 stops22h 15m

£669

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sun 20/9

21:10-21:49

2 stops32h 39m

San Francisco

Sun 27/9

08:10-21:55

3 stops29h 45m

£694

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 18/9

20:15-21:49

2 stops33h 34m

San Francisco

Sun 27/9

08:10-21:55

3 stops29h 45m

£695

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 18/9

06:05-21:49

3 stops47h 44m

San Francisco

Sun 27/9

08:10-15:20

3 stops23h 10m

£717

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sun 20/9

21:10-21:55

3 stops32h 45m

San Francisco

Sun 27/9

08:10-21:55

3 stops29h 45m

£734

Fastest return journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 7/9

20:55-11:45

2 stops22h 50m

San Francisco

Mon 14/9

15:05-19:20

2 stops20h 15m

£760

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 9/9

06:15-10:20

3 stops36h 05m

San Francisco

Tue 15/9

08:30-15:15

2 stops22h 45m

£767

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 7/9

06:10-21:59

3 stops47h 49m

San Francisco

Mon 14/9

15:05-23:05

2 stops24h 00m

£783

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sun 20/9

21:10-21:49

2 stops32h 39m

San Francisco

Sun 27/9

13:45-17:25

2 stops19h 40m

£800

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 9/9

06:15-23:20

3 stops25h 05m

San Francisco

Tue 15/9

11:35-23:00

3 stops27h 25m

£813

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Belfast Intl Airport to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

The month of November is, on average, the cheapest month to fly to San Francisco from Belfast Intl Airport, with most prices found around £0. If you are unable to visit San Francisco during the month of November, then departing from Belfast Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around £0.

When to book flights from Belfast Intl Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Belfast Intl Airport to San Francisco (BFS to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast Intl Airport to San Francisco

Fastest flight time	15h 15m
Direct flights	None

The fastest flight from Belfast Intl Airport to San Francisco takes 15h 15m

There are no direct flights from Belfast Intl Airport to San Francisco. There are no popular flight routes from Belfast Intl Airport to San Francisco.

Search flight deals

Frequently asked questions about flying from Belfast Intl Airport to San Francisco

How far is Belfast Intl to San Francisco by plane?
San Francisco is 5017.1 mi away from Belfast Intl. Typically, this will take 15h 15m by plane in normal conditions.
When did momondo last update prices for flights from Belfast Intl Airport to San Francisco Airport?
Prices for flights from Belfast Intl Airport to San Francisco Airport were last updated today.
How many operators does momondo search for flights from Belfast Intl Airport to San Francisco Airport?
There is 1 operator available for flights from Belfast Intl Airport to San Francisco Airport as of August 2026.
How old do you have to be to fly from Belfast Intl Airport to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Belfast Intl Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Belfast Intl Airport to San Francisco?
momondo data reveals that the most frequently booked airline on the route from Belfast Intl Airport to San Francisco is British Airways, representing 100% of all bookings.

Best airlines flying from Belfast Intl Airport to San Francisco

Compare and see reviews for airlines that fly from Belfast Intl Airport to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £518	Free Cancellation	Rating 6.7 8,159 reviews		Search British Airways flights

South San Francisco

Santa Cruz

Sunnyvale

Rohnert Park

Carmel-by-the-Sea

Windsor

Burlingame

Belmont

Big Sur

Sausalito

San Bruno

Pacific Grove

Aptos

Newark

Mill Valley

Campbell

Palo Alto

Seaside

Roseville

Novato

Why use momondo?

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

Finding the right flight to San Francisco from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

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

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

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

Once you have performed a search for Belfast 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 Belfast to San Francisco right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Belfast to San Francisco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.