How do I get Price Alerts for flights from Belfast to San Francisco?

Search flight deals from Belfast to San Francisco . While viewing offers you’ll have the option to create a Price Alert.

How can I save money on flights from Belfast to San Francisco with momondo?

Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

How does momondo find its flight prices?

We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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

Prices for flights from Belfast to San Francisco Airport are refreshed on a daily basis.

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

As of January 2026, there are 2 operators available to choose from for flights from Belfast to San Francisco Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast 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.

£276 Cheap Flights from Belfast to San Francisco in 2026

1 adult

0 bags

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Find the cheapest flights from Belfast to San Francisco

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:15 - 16:30

BFS

SFO

34h 15m

2 stops

20:25 - 22:20

SFO

BFS

18h 55m

2 stops

£475Multiple Airlines

Wed, 4 Mar - Wed, 11 Mar

06:30 - 18:30

BHD

SFO

20h 00m

2 stops

16:59 - 20:15

SFO

BHD

19h 16m

2 stops

£485Multiple Airlines

Sun, 15 Feb - Sun, 22 Feb

09:10 - 00:48

BHD

SFO

23h 38m

2 stops

20:40 - 18:40

SFO

BHD

14h 00m

1 stop

£489Multiple Airlines

Sun, 15 Feb - Sun, 22 Feb

17:35 - 15:00

BHD

SFO

29h 25m

1 stop

20:40 - 10:40

SFO

BHD

30h 00m

1 stop

£506British Airways

Sun, 15 Feb - Sun, 22 Feb

19:35 - 16:00

BHD

SFO

27h 25m

1 stop

10:36 - 14:15

SFO

BHD

20h 39m

2 stops

£508British Airways

Fri, 13 Mar - Mon, 16 Mar

19:35 - 16:00

BHD

SFO

27h 25m

1 stop

06:00 - 10:40

SFO

BHD

21h 40m

2 stops

£509British Airways

Fri, 13 Mar - Mon, 16 Mar

08:45 - 22:41

BHD

SFO

20h 56m

2 stops

10:36 - 14:15

SFO

BHD

20h 39m

2 stops

£512British Airways

Fri, 13 Mar - Mon, 16 Mar

06:45 - 21:13

BHD

SFO

21h 28m

2 stops

10:25 - 14:15

SFO

BHD

20h 50m

2 stops

£513British Airways

Fri, 13 Mar - Mon, 16 Mar

20:10 - 13:50

BHD

SFO

25h 40m

1 stop

16:35 - 16:25

SFO

BHD

15h 50m

1 stop

£520British Airways

Fri, 24 Apr - Tue, 28 Apr

06:30 - 13:50

BHD

SFO

15h 20m

1 stop

16:35 - 16:25

SFO

BHD

15h 50m

1 stop

£520British Airways

Fri, 24 Apr - Tue, 28 Apr

British Airways flights from Belfast to San Francisco

Our best British Airways deals on Belfast to San Francisco flight tickets

British Airways

13 Mar

BHD19:35Belfast City

27h 25m

1 stop

SFO16:00San Francisco

16 Mar

SFO10:36San Francisco

20h 39m

2 stops

BHD14:15Belfast City

£508

British Airways

13 Mar

BHD19:35Belfast City

27h 25m

1 stop

SFO16:00San Francisco

16 Mar

SFO06:00San Francisco

21h 40m

2 stops

BHD10:40Belfast City

£509

British Airways

13 Mar

BHD08:45Belfast City

20h 56m

2 stops

SFO22:41San Francisco

16 Mar

SFO10:36San Francisco

20h 39m

2 stops

BHD14:15Belfast City

£512

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 4/3

14:15-16:30

2 stops34h 15m

San Francisco

Wed 11/3

20:25-22:20

2 stops18h 55m

£475

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 15/2

06:30-18:30

2 stops20h 00m

San Francisco

Sun 22/2

16:59-20:15

2 stops19h 16m

£485

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 15/2

09:10-00:48

2 stops23h 38m

San Francisco

Sun 22/2

20:40-18:40

1 stop14h 00m

£489

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 15/2

17:35-15:00

1 stop29h 25m

San Francisco

Sun 22/2

20:40-10:40

1 stop30h 00m

£506

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

19:35-16:00

1 stop27h 25m

San Francisco

Mon 16/3

10:36-14:15

2 stops20h 39m

£508

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

19:35-16:00

1 stop27h 25m

San Francisco

Mon 16/3

06:00-10:40

2 stops21h 40m

£509

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

08:45-22:41

2 stops20h 56m

San Francisco

Mon 16/3

10:36-14:15

2 stops20h 39m

£512

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

06:45-21:13

2 stops21h 28m

San Francisco

Mon 16/3

10:25-14:15

2 stops20h 50m

£513

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/4

20:10-13:50

1 stop25h 40m

San Francisco

Tue 28/4

16:35-16:25

1 stop15h 50m

£520

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/4

06:30-13:50

1 stop15h 20m

San Francisco

Tue 28/4

16:35-16:25

1 stop15h 50m

£520

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Cheap Belfast to San Francisco flight deals and tips

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

Fastest flight time	20h 00m
Direct flights	None

The fastest flight from Belfast to San Francisco takes 20h 00m

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

Search flight deals

How far is Belfast to San Francisco by plane?
San Francisco is 5028.1 mi away from Belfast. A reasonable flight in good conditions will take 20h 00m.
When did momondo last update prices for flights from Belfast to San Francisco Airport?
Prices for flights from Belfast to San Francisco Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Belfast to San Francisco Airport?
As of January 2026, there are 2 operators available to choose from for flights from Belfast to San Francisco Airport.
How old do you have to be to fly from Belfast to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast 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.

Best airlines flying from Belfast to San Francisco

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £394	Free Cancellation	Rating 6.7 7,690 reviews		Search British Airways flights
American Airlines	PriceFrom £471	Free Cancellation	Rating 7.2 11,166 reviews		Search American Airlines flights

How do I get Price Alerts for flights from Belfast to San Francisco?
Search flight deals from Belfast to San Francisco. While viewing offers you’ll have the option to create a Price Alert.
How can I save money on flights from Belfast to San Francisco with momondo?
Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.
How does momondo find its flight prices?
We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Sunnyvale

Santa Clara

Seaside

Big Sur

Rohnert Park

Campbell

Palo Alto

Santa Cruz

South San Francisco

Novato

Capitola

Sausalito

San Bruno

Woodland

Aptos

Redwood City

Pacific Grove

Burlingame

Mill Valley

Modesto

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to San Francisco . Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Belfast to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to San Francisco from Belfast. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Belfast to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.