Find flights
When to book
FAQs

Cheap flights from San Francisco to Belfast from £466

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
13 Oct — 20 Oct1
1 adult
1 adult, Economy

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 13 September 2025.

Round-trip from

£438

Popular in

November

Cheapest in

October

Average price

£625
British Airways
  • British Airways
  • 1/3-31/3
  • 3 total stops
  • 34h 28m total
  • San Francisco to Belfast
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£69 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 September 2025
Search Deals

Find flight deals from San Francisco to Belfast

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 13 September 2025.

Mon 6/1013:45SFO - BHD
1 stop19h 10mKLM
Tue 4/1117:20BHD - SFO
1 stop26h 30mKLM
Deal found 13/9£466
Mon 6/1015:23SFO - BHD
2 stops17h 32mKLM
Mon 3/1117:20BHD - SFO
1 stop26h 30mKLM
Deal found 13/9£469
Thu 16/1009:16SFO - BHD
2 stops17h 54mAmerican Airlines
Wed 22/1011:30BHD - SFO
2 stops18h 13mAmerican Airlines
Deal found 10/9£479
Tue 7/1010:55SFO - BHD
2 stops18h 05mAmerican Airlines
Mon 3/1106:35BHD - SFO
2 stops19h 51mAmerican Airlines
Deal found 13/9£497
Thu 9/1013:45SFO - BHD
1 stop23h 30mVirgin Atlantic
Thu 16/1006:30BHD - SFO
1 stop13h 15mVirgin Atlantic
Deal found 11/9£502
Wed 3/1213:55SFO - BHD
1 stop23h 05mDelta
Sun 7/1206:30BHD - SFO
1 stop13h 20mDelta
Deal found 10/9£503
Thu 16/1013:45SFO - BHD
2 stops19h 10mMultiple Airlines
Wed 22/1006:30BHD - SFO
1 stop13h 15mMultiple Airlines
Deal found 10/9£506
Thu 9/1012:35SFO - BFS
2 stops26h 50mMultiple Airlines
Thu 16/1006:35BFS - SFO
1 stop20h 55mMultiple Airlines
Deal found 11/9£513
Wed 3/1217:30SFO - BHD
1 stop15h 05mBritish Airways
Sun 7/1206:30BHD - SFO
1 stop20h 15mBritish Airways
Deal found 11/9£514
Mon 6/1013:45SFO - BHD
1 stop19h 10mMultiple Airlines
Sun 2/1117:20BHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 13/9£516
Thu 16/1010:15SFO - BFS
3 stops19h 50mMultiple Airlines
Wed 22/1007:25BFS - SFO
3 stops39h 05mMultiple Airlines
Deal found 10/9£595
Mon 27/1020:25SFO - BFS
2 stops17h 45mMultiple Airlines
Mon 3/1114:15BFS - SFO
2 stops34h 15mMultiple Airlines
Deal found 12/9£611

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 13 September 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

Mon 6/10

13:45-16:55

1 stop19h 10m

Belfast City

Mon 3/11

17:20-11:50

1 stop26h 30m

£466

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 6/10

13:45-16:55

1 stop19h 10m

Belfast City

Tue 4/11

17:20-11:50

1 stop26h 30m

£466

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 8/10

10:40-16:55

2 stops22h 15m

Belfast City

Tue 4/11

06:30-11:50

1 stop13h 20m

£469

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 6/10

15:23-16:55

2 stops17h 32m

Belfast City

Mon 3/11

17:20-11:50

1 stop26h 30m

£469

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 7/10

13:45-16:55

2 stops19h 10m

Belfast City

Mon 3/11

17:20-11:50

1 stop26h 30m

£469

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Fri 17/10

15:48-18:15

2 stops18h 27m

Belfast City

Thu 23/10

12:40-22:45

2 stops18h 05m

£479

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 9/10

10:20-11:10

2 stops16h 50m

Belfast City

Thu 16/10

13:15-00:17

2 stops19h 02m

£497

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:55-21:00

1 stop23h 05m

Belfast City

Sun 7/12

06:30-11:50

1 stop13h 20m

£503

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 16/10

13:45-16:55

2 stops19h 10m

Belfast City

Wed 22/10

06:30-11:45

1 stop13h 15m

£506

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 9/10

12:35-23:25

2 stops26h 50m

Belfast Intl

Thu 16/10

06:35-19:30

1 stop20h 55m

£513

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 13 results
1
2

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, January is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £67). Flying from San Francisco to Belfast in July is currently the most expensive (average of £90). 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 19h 10m. 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, January is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £67). Flying from San Francisco to Belfast in July is currently the most expensive (average of £90). 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 City flights
San Francisco to Belfast Intl 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.