How long is the flight from Belfast to San Francisco?

There are many flights that can get you from Belfast to San Francisco in 15h 40m. Fly via British Airways to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What is the cheapest time of day to fly from BFS to SFO?

When flying from Belfast to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to San Francisco from Belfast?

Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 0 different airlines.

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Belfast to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.

Can I find deals for business class flights from Belfast to San Francisco?

Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£379+ Cheap Flights from Belfast to San Francisco

Cheap flight deals from Belfast to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Fri 2/1006:15 -

1 stop17h 50m

Sun 18/1019:45 -

1 stop18h 50m

Deal found 31/8£477

Fri 2/1006:15 -

1 stop17h 50m

Sat 17/1019:45 -

1 stop19h 40m

Deal found 31/8£489

Thu 1/1006:40 -

3 stops23h 15m

Sun 18/1006:00 -

2 stops28h 25m

Deal found 31/8£677

Wed 16/920:35 -

1 stop25h 15m

Sun 20/916:35 -

1 stop18h 10m

Deal found 30/8£723

Wed 14/1015:40 -

3 stops30h 50m

Wed 21/1006:40 -

3 stops24h 20m

Deal found 31/8£751

Wed 16/917:30 -

1 stop26h 15m

Sun 20/914:15 -

2 stops18h 40m

Deal found 30/8£836

Find flight deals from Belfast to San Francisco

Round-trip from	£477
One-way from	£379

2/10-18/10
2 total stops
36h 40m total
Belfast to San Francisco

Search Deals

4/10
3 total stops
58h 02m total
Belfast to San Francisco

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast 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

Fri 2/10

06:15-16:05

1 stop17h 50m

San Francisco

Sun 18/10

19:45-22:35

1 stop18h 50m

£477

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 21/1

11:05-18:45

1 stop15h 40m

San Francisco

Mon 25/1

07:02-10:50

2 stops19h 48m

£577

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 2/10

06:05-16:15

2 stops18h 10m

San Francisco

Sat 17/10

19:35-22:40

2 stops19h 05m

£706

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Wed 16/9

20:35-13:50

1 stop25h 15m

San Francisco

Sun 20/9

16:35-18:45

1 stop18h 10m

£723

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 14/10

14:35-14:30

3 stops31h 55m

San Francisco

Wed 21/10

13:00-19:15

2 stops22h 15m

£763

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 1/10

06:40-21:55

3 stops23h 15m

San Francisco

Sun 18/10

06:00-13:05

3 stops23h 05m

£831

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Wed 16/9

09:50-20:32

2 stops18h 42m

San Francisco

Sun 20/9

14:15-16:55

2 stops18h 40m

£899

Cheapest one-way

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sun 4/10

12:20-14:22

3 stops58h 02m

£379

Fastest single journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 7/10

08:15-22:53

2 stops22h 38m

£505

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Wed 7/10

07:00-22:53

2 stops23h 53m

£505

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 18 resultsSorted by cheapest first

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

BF1-SFO

BFS-SFO

BHD-SFO

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco

BF1-SFO

BFS-SFO

BHD-SFO

No data available for this route at this time. Please check back soon.

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?
Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 0 different airlines.
How long is the flight from Belfast to San Francisco?
There are many flights that can get you from Belfast to San Francisco in 15h 40m. Fly via British Airways to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.
Can I find deals for flights from Belfast to San Francisco that include hotel bookings?
Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.
Can I find deals for business class flights from Belfast to San Francisco?
Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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How does Cheapflights help users find flights from Belfast to San Francisco?

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Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to San Francisco.

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Belfast today and book when prices fit your budget.

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Cheap flights from Belfast to San Francisco from £379

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to San Francisco

Cheapest flights from Belfast to San FranciscoExplore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from Belfast to San FranciscoDiscover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Discover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights from Belfast to San FranciscoDiscover last-minute flight deals from Belfast to San Francisco. Data last updated 1 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast to San Francisco. Data last updated 1 September 2026 and is based on user searches.

One-way flights from Belfast to San FranciscoSearch for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Search for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Find flight deals from Belfast to San Francisco

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

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.

Cheapflights Insights

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?

How long is the flight from Belfast to San Francisco?

Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

How can I find direct flights from Belfast to San Francisco?

Can I find deals for business class flights from Belfast to San Francisco?

Travelling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Belfast to San Francisco

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Complete your trip

Complete your trip to San Francisco by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to California

Book a non-stop flight to one of these other cities located in California.

Search flights from Belfast to San Francisco by cabin class

Find flights from Belfast to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Belfast and San Francisco flights

Browse other Belfast and San Francisco flight options. Last updated on 1 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Other flights to San Francisco

Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 1 September 2026.

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How does Cheapflights help users find flights from Belfast to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

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Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from Belfast to San Francisco
Discover carefully curated flight deals from Belfast to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Last-minute flights from Belfast to San Francisco
Discover last-minute flight deals from Belfast to San Francisco. Data last updated 1 September 2026 and is based on user searches.

One-way flights from Belfast to San Francisco
Search for one-way flight options from Belfast to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.