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 are 2 operators available for flights from Belfast Intl Airport to San Francisco Airport as of December 2025.

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.

£348 Cheap Flights from Belfast Intl Airport to San Francisco in 2025/26

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Find the cheapest flights from Belfast Intl Airport to San Francisco

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:45 - 14:35

BFS

SFO

31h 50m2 stops

16:40 - 22:00

SFO

BFS

21h 20m2 stops

£533Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

07:00 - 16:05

BFS

SFO

41h 05m3 stops

10:15 - 22:05

SFO

BFS

27h 50m3 stops

£545Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

07:00 - 16:05

BFS

SFO

41h 05m3 stops

13:00 - 22:05

SFO

BFS

25h 05m2 stops

£597Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

07:15 - 14:30

BFS

SFO

39h 15m3 stops

07:30 - 18:15

SFO

BFS

26h 45m3 stops

£612Multiple Airlines

Tue, 27 Jan - Tue, 3 Feb

07:15 - 14:30

BFS

SFO

39h 15m3 stops

13:00 - 18:15

SFO

BFS

21h 15m2 stops

£612Multiple Airlines

Tue, 27 Jan - Tue, 3 Feb

20:55 - 20:10

BFS

SFO

31h 15m2 stops

13:00 - 18:15

SFO

BFS

21h 15m2 stops

£638Multiple Airlines

Tue, 27 Jan - Tue, 3 Feb

09:55 - 23:25

BFS

SFO

21h 30m2 stops

15:40 - 22:05

SFO

BFS

22h 25m1 stop

£953Multiple Airlines

Thu, 29 Jan - Thu, 5 Feb

momondo Fare Finder

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

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 29/1

14:45-14:35

2 stops31h 50m

San Francisco

Thu 5/2

16:40-22:00

2 stops21h 20m

£533

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 29/1

07:00-16:05

3 stops41h 05m

San Francisco

Thu 5/2

10:15-22:05

3 stops27h 50m

£545

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 29/1

07:00-16:05

3 stops41h 05m

San Francisco

Thu 5/2

13:00-22:05

2 stops25h 05m

£597

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 27/1

07:15-14:30

3 stops39h 15m

San Francisco

Tue 3/2

07:30-18:15

3 stops26h 45m

£612

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 27/1

07:15-14:30

3 stops39h 15m

San Francisco

Tue 3/2

13:00-18:15

2 stops21h 15m

£612

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 27/1

20:55-20:10

2 stops31h 15m

San Francisco

Tue 3/2

13:00-18:15

2 stops21h 15m

£638

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Thu 29/1

09:55-23:25

2 stops21h 30m

San Francisco

Thu 5/2

15:40-22:05

1 stop22h 25m

£953

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 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 £492. This is often the case because there is less demand to fly during this day of the week. Flights from Belfast Intl Airport to San Francisco on a Tuesday will generally be more expensive and average around £725. 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 Intl Airport to San Francisco during this time can be as low as £563. Try not to purchase tickets in the morning because they tend to be around £595. Of course, these prices can vary depending on the time of year and what airport you fly to.

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.

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How far is Belfast Intl to San Francisco by plane?
San Francisco is 5016.8 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 are 2 operators available for flights from Belfast Intl Airport to San Francisco Airport as of December 2025.
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 82% of all bookings. The subsequent popular airline is American Airlines at 18%.

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 £398	Free Cancellation	Rating 6.7 7,580 reviews		Search British Airways flights
American Airlines	PriceFrom £474	Free Cancellation	Rating 7.2 11,047 reviews		Search American Airlines flights

Santa Clara

Carmel-by-the-Sea

Seaside

Sunnyvale

Big Sur

Rohnert Park

Campbell

Palo Alto

Santa Cruz

South San Francisco

Capitola

Novato

Sausalito

San Bruno

Woodland

Aptos

Redwood City

Pacific Grove

Burlingame

Modesto

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.