What is the cheapest airline that flies from Belfast to San Francisco?

Aer Lingus, British Airways, and KLM are the most popular carriers operating from Belfast to San Francisco

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 August 2025, 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.

£333 Cheap Flights from Belfast to San Francisco in 2025

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Find the cheapest flights from Belfast to San Francisco

Round-trip

One-way

Cheap return flights

06:30 - 11:45BHD-SFO

13h 15m1 stop

13:55 - 21:00SFO-BHD

23h 05m1 stop

£614KLM

Find Deal

Fri, 24 Oct - Mon, 3 Nov

06:30 - 17:24BHD-SFO

18h 54m2 stops

13:55 - 21:00SFO-BHD

23h 05m1 stop

£622KLM

Find Deal

Fri, 24 Oct - Mon, 3 Nov

06:35 - 13:50BHD-SFO

15h 15m1 stop

23:59 - 14:15SFO-BHD

30h 16m2 stops

£625British Airways

Find Deal

Fri, 24 Oct - Sun, 2 Nov

06:35 - 17:59BHD-SFO

19h 24m2 stops

12:11 - 14:15SFO-BHD

18h 04m2 stops

£636British Airways

Find Deal

Fri, 24 Oct - Mon, 3 Nov

06:05 - 20:38BFS-SFO

22h 33m2 stops

17:30 - 18:15SFO-BFS

16h 45m1 stop

£637

Find Deal

Fri, 24 Oct - Sun, 2 Nov

06:05 - 20:38BFS-SFO

22h 33m2 stops

20:40 - 21:30SFO-BFS

16h 50m1 stop

£638

Find Deal

Fri, 24 Oct - Mon, 3 Nov

11:55 - 22:45BHD-SFO

18h 50m2 stops

23:14 - 10:40SFO-BHD

27h 26m2 stops

£642British Airways

Find Deal

Fri, 24 Oct - Sun, 2 Nov

06:35 - 13:50BHD-SFO

15h 15m1 stop

17:30 - 16:50SFO-BHD

15h 20m1 stop

£651British Airways

Find Deal

Fri, 24 Oct - Sun, 2 Nov

06:35 - 13:50BHD-SFO

15h 15m1 stop

21:40 - 19:15SFO-BHD

14h 35m1 stop

£658British Airways

Find Deal

Fri, 24 Oct - Fri, 31 Oct

06:30 - 11:45BHD-SFO

13h 15m1 stop

10:40 - 16:50SFO-BHD

23h 10m2 stops

£666Delta

Find Deal

Fri, 24 Oct - Fri, 31 Oct

KLM flights from Belfast to San Francisco

Our best KLM deals on Belfast to San Francisco flight tickets

KLM

24 Oct

BHD06:30Belfast City

13h 15m

1 stop

SFO11:45San Francisco

3 Nov

SFO13:55San Francisco

23h 05m

1 stop

BHD21:00Belfast City

£614

Find similar

KLM

24 Oct

BHD06:30Belfast City

18h 54m

2 stops

SFO17:24San Francisco

3 Nov

SFO13:55San Francisco

23h 05m

1 stop

BHD21:00Belfast City

£622

Find similar

KLM

24 Oct

BHD06:30Belfast City

18h 54m

2 stops

SFO17:24San Francisco

31 Oct

SFO13:20San Francisco

20h 30m

2 stops

BHD16:50Belfast City

£675

Find similar

British Airways flights from Belfast to San Francisco

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

British Airways

24 Oct

BHD06:35Belfast City

15h 15m

1 stop

SFO13:50San Francisco

2 Nov

SFO23:59San Francisco

30h 16m

2 stops

BHD14:15Belfast City

£625

Find similar

British Airways

24 Oct

BHD06:35Belfast City

19h 24m

2 stops

SFO17:59San Francisco

3 Nov

SFO12:11San Francisco

18h 04m

2 stops

BHD14:15Belfast City

£636

Find similar

British Airways

24 Oct

BHD11:55Belfast City

18h 50m

2 stops

SFO22:45San Francisco

2 Nov

SFO23:14San Francisco

27h 26m

2 stops

BHD10:40Belfast City

£642

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:30-11:45

1 stop13h 15m

San Francisco

Mon 3/11

13:55-21:00

1 stop23h 05m

£614

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:30-17:24

2 stops18h 54m

San Francisco

Mon 3/11

13:55-21:00

1 stop23h 05m

£622

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:35-13:50

1 stop15h 15m

San Francisco

Sun 2/11

23:59-14:15

2 stops30h 16m

£625

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:35-17:59

2 stops19h 24m

San Francisco

Mon 3/11

12:11-14:15

2 stops18h 04m

£636

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 24/10

06:05-20:38

2 stops22h 33m

San Francisco

Sun 2/11

17:30-18:15

1 stop16h 45m

£637

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 24/10

06:05-20:38

2 stops22h 33m

San Francisco

Mon 3/11

20:40-21:30

1 stop16h 50m

£638

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

11:55-22:45

2 stops18h 50m

San Francisco

Sun 2/11

23:14-10:40

2 stops27h 26m

£642

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:35-13:50

1 stop15h 15m

San Francisco

Sun 2/11

17:30-16:50

1 stop15h 20m

£651

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:35-13:50

1 stop15h 15m

San Francisco

Fri 31/10

21:40-19:15

1 stop14h 35m

£658

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/10

06:30-11:45

1 stop13h 15m

San Francisco

Fri 31/10

10:40-16:50

2 stops23h 10m

£666

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Belfast 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

Prices

Airlines

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart on your flight to San Francisco is on a Thursday when prices can be found for as low as £486. This is often the case because there is less demand to fly during this day of the week. Flights from Belfast to San Francisco on a Tuesday will generally be more expensive and average around £715. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San Francisco?

Our most recent data shows that the best time of day to fly to San Francisco is in the afternoon. Flights from Belfast to San Francisco during this time can be as low as £555. Try not to purchase tickets in the morning because they tend to be around £587. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Best price found	£333
Fastest flight time	13h 15m
Direct flights	None
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Belfast in the past 72 hours is £333. The best return flight deal from Belfast to San Francisco found on momondo in the last 72 hours is £614.

The fastest flight from Belfast to San Francisco takes 13h 15m

There are no direct flights from Belfast to San Francisco. Popular non-direct routes for this connection are Belfast City Airport - San Francisco Airport and Belfast Intl Airport - San Francisco Airport.

There is 1 airport near San Francisco: San Francisco (SFO)

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 13h 15m.
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 August 2025, 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 £403	Free Cancellation	Rating 6.6 7,267 reviews		Search British Airways flights
American Airlines	PriceFrom £467	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

Carmel-by-the-Sea

Santa Clara

Seaside

Vacaville

Salinas

Calistoga

Rohnert Park

Campbell

Bodega Bay

Milpitas

San Ramon

South San Francisco

Brentwood

Capitola

Sonoma

Millbrae

San Bruno

Sausalito

Woodland

Santa Cruz

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.