Find flights
When to book
FAQs

Cheap flights from San Francisco to Belfast from £247

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Belfast (BF1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 November 2025.

Round-trip from

£481

One-way from

£247

Popular in

January

Cheapest in

April

Average price

£788
British Airways
  • British Airways
  • 24/3-31/3
  • 2 total stops
  • 28h 35m total
  • San Francisco to Belfast
Search Deals
15/3
  • 15/3
  • 2 total stops
  • 30h 35m total
  • San Francisco to Belfast
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£103 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from San Francisco to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Belfast
Explore the most affordable flight options available from San Francisco to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Sun 16/1113:55SFO - BHD
1 stop23h 05mDelta
Tue 25/1117:20BHD - SFO
1 stop26h 30mDelta
Deal found 6/11£497
Wed 3/1213:55SFO - BHD
1 stop18h 55mDelta
Sun 7/1206:30BHD - SFO
1 stop13h 20mDelta
Deal found 6/11£520
Mon 17/1113:55SFO - BHD
1 stop18h 55mDelta
Mon 24/1106:30BHD - SFO
1 stop13h 20mDelta
Deal found 5/11£521
Mon 17/1111:55SFO - BHD
2 stops25h 05mDelta
Sun 23/1117:20BHD - SFO
1 stop26h 30mDelta
Deal found 5/11£524
Sat 15/1117:00SFO - BHD
2 stops19h 30mAmerican Airlines
Sat 22/1106:35BHD - SFO
2 stops19h 49mAmerican Airlines
Deal found 7/11£536
Sat 15/1113:55SFO - BHD
1 stop23h 05mKLM
Sun 23/1117:20BHD - SFO
1 stop26h 30mKLM
Deal found 6/11£542
Thu 4/1210:15SFO - BFS
3 stops27h 50mMultiple Airlines
Thu 11/1206:00BFS - SFO
3 stops42h 05mMultiple Airlines
Deal found 6/11£561
Tue 18/1113:00SFO - BFS
2 stops41h 05mMultiple Airlines
Tue 25/1117:30BFS - SFO
1 stop34h 40mMultiple Airlines
Deal found 6/11£631
Mon 17/1116:35SFO - BFS
2 stops21h 05mMultiple Airlines
Tue 25/1117:30BFS - SFO
1 stop34h 40mMultiple Airlines
Deal found 6/11£687
Tue 18/1112:10SFO - BFS
1 stop25h 30mMultiple Airlines
Wed 26/1106:00BFS - SFO
2 stops38h 12mMultiple Airlines
Deal found 6/11£738
Sun 16/1116:40SFO - BFS
2 stops20h 50mMultiple Airlines
Tue 25/1117:30BFS - SFO
1 stop34h 40mMultiple Airlines
Deal found 6/11£744
Wed 19/1117:20SFO - BFS
2 stops20h 25mMultiple Airlines
Tue 25/1117:30BFS - SFO
1 stop34h 40mMultiple Airlines
Deal found 6/11£790

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from San Francisco to Belfast that are best for you.

Fly from

San Francisco

Fly to

Belfast

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 24/3

18:30-14:50

1 stop13h 20m

Belfast City

Tue 31/3

06:35-13:50

1 stop15h 15m

£481

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 16/3

21:40-20:15

1 stop15h 35m

Belfast City

Tue 24/3

08:45-16:00

1 stop14h 15m

£482

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 24/3

10:24-10:30

2 stops17h 06m

Belfast City

Tue 31/3

06:35-13:50

1 stop15h 15m

£493

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 18/11

13:55-21:00

1 stop23h 05m

Belfast City

Wed 26/11

06:30-11:50

1 stop13h 20m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 17/11

13:55-16:50

1 stop18h 55m

Belfast City

Wed 26/11

06:30-11:50

1 stop13h 20m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 17/11

13:55-21:00

1 stop23h 05m

Belfast City

Tue 25/11

17:20-11:50

1 stop26h 30m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 18/11

13:55-21:00

1 stop23h 05m

Belfast City

Thu 27/11

06:30-11:50

1 stop13h 20m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 18/11

13:55-21:00

1 stop23h 05m

Belfast City

Tue 25/11

17:20-11:50

1 stop26h 30m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 24/3

10:24-11:30

2 stops18h 06m

Belfast City

Tue 31/3

06:35-18:42

2 stops20h 07m

£499

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 4/12

10:15-22:05

3 stops27h 50m

Belfast Intl

Thu 11/12

06:00-16:05

3 stops42h 05m

£561

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 27 results
1
2
3

Best time to book a flight from San Francisco to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast from San Francisco 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 San Francisco to Belfast

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

Currently, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £448). Flying from San Francisco to Belfast in January is currently the most expensive (average of £1,023). 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.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Belfast. 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 from for flights from San Francisco to Belfast?

    If you book a flight to Belfast from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 0 flights from San Francisco to Belfast per day from 0 different airlines.

  • How long is the flight from San Francisco to Belfast?

    Departing from San Francisco to Belfast will take you 13h 20m. The distance between San Francisco and Belfast is about 5038 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Belfast 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 San Francisco to Belfast?

    Currently, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £448). Flying from San Francisco to Belfast in January is currently the most expensive (average of £1,023). 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

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 San Francisco to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Belfast Intl flights
Los Angeles to Belfast City flights
San Francisco to Belfast Intl flights
San Francisco to Belfast City flights

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 San Francisco to Belfast?

Deals for San Francisco to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

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 San Francisco to Belfast.

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

Yes, we can. To see specific flights from San Francisco to Belfast with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from San Francisco to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.