How long is the flight from Belfast to San Francisco?

There are many flights that can get you from Belfast to San Francisco in 16h 20m. 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.

£314+ 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 22 September 2026.

Tue 3/1115:55 -

2 stops30h 55m

Tue 10/1116:45 -

2 stops21h 25m

Deal found 19/9£481

Thu 5/1114:30 -

2 stops34h 00m

Thu 12/1119:25 -

2 stops18h 30m

Deal found 21/9£484

Mon 2/1114:35 -

2 stops32h 15m

Mon 9/1116:45 -

2 stops21h 35m

Deal found 18/9£502

Mon 23/1106:35 -

1 stop16h 20m

Tue 8/1213:42 -

2 stops19h 03m

Deal found 21/9£540

Thu 29/1006:30 -

2 stops19h 55m

Mon 2/1117:25 -

1 stop17h 10m

Deal found 20/9£546

Tue 13/1012:40 -

2 stops20h 04m

Wed 21/1016:35 -

1 stop15h 05m

Deal found 18/9£548

Thu 19/1117:50 -

1 stop29h 05m

Sun 22/1116:00 -

2 stops18h 50m

Deal found 17/9£570

Tue 20/1006:30 -

2 stops19h 45m

Tue 27/1010:33 -

2 stops17h 17m

Deal found 22/9£583

Sun 18/1014:40 -

2 stops33h 35m

Sun 25/1020:25 -

2 stops18h 00m

Deal found 20/9£640

Thu 29/1014:45 -

2 stops32h 05m

Mon 2/1116:45 -

2 stops21h 35m

Deal found 20/9£663

Tue 20/1007:00 -

3 stops35h 39m

Tue 27/1006:02 -

3 stops31h 53m

Deal found 22/9£773

Find flight deals from Belfast to San Francisco

Round-trip from	£481
One-way from	£314

3/11-10/11
4 total stops
52h 20m total
Belfast to San Francisco

Search Deals

23/11-31/12
3 total stops
50h 00m 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

Mon 23/11

20:50-14:50

3 stops50h 00m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£314

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 30/11

14:20-16:30

2 stops34h 10m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£400

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sun 29/11

19:25-16:30

2 stops53h 05m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£404

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 23/11

06:35-14:55

1 stop16h 20m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£428

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 30/11

14:50-14:55

1 stop32h 05m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£433

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Thu 5/11

14:30-16:30

2 stops34h 00m

San Francisco

Thu 12/11

19:25-21:55

2 stops18h 30m

£484

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 2/11

14:35-14:50

2 stops32h 15m

San Francisco

Mon 9/11

16:45-22:20

2 stops21h 35m

£502

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 23/11

06:35-14:55

1 stop16h 20m

San Francisco

Tue 8/12

13:42-16:45

2 stops19h 03m

£540

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 19/11

17:50-14:55

1 stop29h 05m

San Francisco

Sun 22/11

16:00-18:50

2 stops18h 50m

£572

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 29/10

17:50-15:55

1 stop29h 05m

San Francisco

Mon 2/11

14:05-17:25

2 stops19h 20m

£572

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 15 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

BHD-SFO

BFS-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

BHD-SFO

BFS-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 16h 20m. 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Belfast today with Cheapflights!

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 £314

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. 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 22 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 22 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 22 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 22 September 2026.

Last-minute flights from Belfast to San FranciscoDiscover last-minute flight deals from Belfast to San Francisco. Data last updated 22 September 2026 and is based on user searches.

Discover last-minute flight deals from Belfast to San Francisco. Data last updated 22 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 22 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 22 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Belfast to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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

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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 22 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 22 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 22 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 22 September 2026.

Last-minute flights from Belfast to San Francisco
Discover last-minute flight deals from Belfast to San Francisco. Data last updated 22 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 22 September 2026.