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 05m. Fly via American Airlines to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.

What are the cheapest airlines flying from Belfast to San Francisco round-trip?

Flying on British Airways is currently your cheapest option to San Francisco, with prices starting at £400. Another option worth looking into is American Airlines, starting at £464 return. British Airways is currently priced 23% below the average price you’ll pay for this route.

What is the cheapest month to book a flight from Belfast to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco (average of £538). Flying from Belfast to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Belfast to San Francisco?

Travellers seeking maximum savings on their Belfast to San Francisco flight should consider departing on Thursday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Located just 11.8 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 2 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.

£320+ Flights from Belfast to San Francisco

Q: How much does it cost for a return flight from Belfast to San Francisco?

Airfare is above average for this route at the moment. Belfast to San Francisco flights typically cost between £391 and £438 in March. The cheapest return flight price found within the last 3 days was £469 on American Airlines (5 Mar-9 Mar).

Cheap flight deals from Belfast to San Francisco

Round-trip from	£469
One-way from	£320
Popular in	July
Cheapest in	September
Average price	£404

American Airlines
5/3-9/3
3 total stops
33h 21m total
Belfast to San Francisco

Search Deals

2/10
3 total stops
33h 19m total
Belfast to San Francisco

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Belfast to San Francisco

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 18 September 2025.

Thu 9/1006:30BHD - SFO

2 stops19h 15mDelta

Thu 16/1013:45SFO - BHD

2 stops23h 30mDelta

Deal found 16/9£486

Fri 31/1008:05BFS - SFO

2 stops35h 45mMultiple Airlines

Fri 7/1115:40SFO - BFS

2 stops22h 20mMultiple Airlines

Deal found 16/9£565

Thu 9/1006:35BHD - SFO

1 stop15h 15mMultiple Airlines

Thu 16/1016:30SFO - BHD

1 stop15h 00mMultiple Airlines

Deal found 16/9£604

Sat 27/906:30BHD - SFO

1 stop13h 15mKLM

Fri 3/1013:45SFO - BHD

1 stop23h 30mKLM

Deal found 16/9£771

Sat 27/906:30BHD - SFO

1 stop13h 15mDelta

Fri 3/1012:40SFO - BHD

2 stops20h 15mDelta

Deal found 16/9£775

Sat 27/905:45BFS - SFO

3 stops35h 45mMultiple Airlines

Fri 3/1010:15SFO - BFS

3 stops25h 50mMultiple Airlines

Deal found 16/9£867

Sat 27/906:55BHD - SFO

3 stops34h 35mMultiple Airlines

Fri 3/1012:50SFO - BHD

2 stops23h 20mMultiple Airlines

Deal found 16/9£900

Mon 13/1006:40BHD - SFO

1 stop15h 10mBritish Airways

Mon 13/1019:20SFO - BHD

1 stop17h 25mBritish Airways

Deal found 18/9£1,028

Mon 13/1006:40BHD - SFO

1 stop15h 10mAer Lingus

Mon 13/1017:40SFO - BHD

2 stops18h 15mAer Lingus

Deal found 18/9£1,217

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 18 September 2025.

Thu 5/310:40BHD - SFO

1 stop16h 05mAmerican Airlines

Mon 9/310:24SFO - BHD

2 stops17h 16mAmerican Airlines

Deal found 15/9£469

Thu 9/1006:30BHD - SFO

2 stops19h 15mDelta

Thu 16/1013:45SFO - BHD

2 stops23h 30mDelta

Deal found 16/9£486

Fri 31/1008:05BFS - SFO

2 stops35h 45mMultiple Airlines

Fri 7/1115:40SFO - BFS

2 stops22h 20mMultiple Airlines

Deal found 16/9£565

Thu 9/1006:35BHD - SFO

1 stop15h 15mMultiple Airlines

Thu 16/1016:30SFO - BHD

1 stop15h 00mMultiple Airlines

Deal found 16/9£604

Last-minute flights from Belfast to San Francisco
Discover last-minute flight deals from Belfast to San Francisco. Data last updated 18 September 2025 and is based on user searches.

Sat 27/906:30BHD - SFO

1 stop13h 15mKLM

Fri 3/1013:45SFO - BHD

1 stop23h 30mKLM

Deal found 16/9£771

Sat 27/906:30BHD - SFO

1 stop13h 15mDelta

Fri 3/1012:40SFO - BHD

2 stops20h 15mDelta

Deal found 16/9£775

Sat 27/905:45BFS - SFO

3 stops35h 45mMultiple Airlines

Fri 3/1010:15SFO - BFS

3 stops25h 50mMultiple Airlines

Deal found 16/9£867

Sat 27/906:55BHD - SFO

3 stops34h 35mMultiple Airlines

Fri 3/1012:50SFO - BHD

2 stops23h 20mMultiple Airlines

Deal found 16/9£900

Thu 9/1006:30BHD - SFO

2 stops19h 15mDelta

Thu 16/1013:45SFO - BHD

2 stops23h 30mDelta

Deal found 16/9£486

Thu 9/1006:35BHD - SFO

1 stop15h 15mMultiple Airlines

Thu 16/1016:30SFO - BHD

1 stop15h 00mMultiple Airlines

Deal found 16/9£604

Mon 13/1006:40BHD - SFO

1 stop15h 10mBritish Airways

Mon 13/1019:20SFO - BHD

1 stop17h 25mBritish Airways

Deal found 18/9£1,028

Mon 13/1006:40BHD - SFO

1 stop15h 10mAer Lingus

Mon 13/1017:40SFO - BHD

2 stops18h 15mAer Lingus

Deal found 18/9£1,217

Fri 31/1008:05BFS - SFO

2 stops35h 45mMultiple Airlines

Fri 7/1115:40SFO - BFS

2 stops22h 20mMultiple Airlines

Deal found 16/9£565

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 18 September 2025.

Thu 2/1020:05BHD - SFO

3 stops33h 19mMultiple Airlines

Deal found 16/9£320

Fri 3/1007:05BFS - SFO

3 stops22h 19mMultiple Airlines

Deal found 16/9£347

Fri 3/1007:00BHD - SFO

3 stops38h 15mMultiple Airlines

Deal found 16/9£434

Mon 13/1017:55BHD - SFO

2 stops30h 00mAer Lingus

Deal found 18/9£476

Mon 13/1009:05BHD - SFO

3 stops39h 35mMultiple Airlines

Deal found 18/9£541

Fri 3/1006:35BHD - SFO

1 stop15h 15mIberia

Deal found 16/9£546

Thu 2/1006:35BHD - SFO

1 stop15h 15mIberia

Deal found 16/9£589

Mon 13/1019:30BHD - SFO

1 stop26h 20mFinnair

Deal found 18/9£613

Wed 19/1109:15BHD - SFO

1 stop13h 45mBritish Airways

Deal found 17/9£1,124

Wed 19/1109:15BHD - SFO

2 stops22h 10mMultiple Airlines

Deal found 17/9£1,390

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

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

10:40-18:45

1 stop16h 05m

San Francisco

Mon 9/3

10:24-10:40

2 stops17h 16m

£469

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:30-17:45

2 stops19h 15m

San Francisco

Thu 16/10

13:45-21:15

2 stops23h 30m

£486

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 31/10

08:05-12:50

2 stops35h 45m

San Francisco

Fri 7/11

15:40-22:00

2 stops22h 20m

£565

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:35-13:50

1 stop15h 15m

San Francisco

Thu 16/10

16:30-15:30

1 stop15h 00m

£604

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 2/10

20:05-21:24

3 stops33h 19m

£320

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 3/10

07:05-21:24

3 stops22h 19m

£347

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 3/10

07:00-13:15

3 stops38h 15m

£434

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 13/10

17:55-15:55

2 stops30h 00m

£476

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 13/10

09:05-16:40

3 stops39h 35m

£541

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 3/10

06:35-13:50

1 stop15h 15m

£546

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 14 results

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.

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

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

One of the essential ways to save on airfare from Belfast to San Francisco is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 10% on airfare.

How much does it cost for a return flight from Belfast to San Francisco?

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Belfast to San Francisco, such as American Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

British Airways

6.7

Okay

7,367 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

Related info for your journey

What airport do you fly into for flights to San Francisco from Belfast?
Located just 11.8 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 2 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 05m. Fly via American Airlines to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.
What are the cheapest airlines flying from Belfast to San Francisco round-trip?
Flying on British Airways is currently your cheapest option to San Francisco, with prices starting at £400. Another option worth looking into is American Airlines, starting at £464 return. British Airways is currently priced 23% below the average price you’ll pay for this route.
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.
What is the cheapest month to book a flight from Belfast to San Francisco?
Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco (average of £538). Flying from Belfast to San Francisco in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Santa Cruz

Newark

South San Francisco

Bodega Bay

Pacific Grove

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Top 2 airlines flying from Belfast to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£400	Average£562	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£464	Average£515	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Belfast to San Francisco from £320

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 2/10. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

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

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

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

Find hourly flight availability from Belfast to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

How much does it cost for a return flight from Belfast to San Francisco?

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Belfast to San Francisco, such as American Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Belfast to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

How long is the flight from Belfast to San Francisco?

What are the cheapest airlines flying from Belfast to San Francisco round-trip?

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?

What is the cheapest month to book a flight 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.

Top 2 airlines flying from Belfast to San Francisco

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 18 September 2025.