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Cheap flights from San Francisco to Belfast from £232

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
8 Jun — 15 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 May 2026.

Mon 2/1117:30
SFO
-
BHD
1 stop17h 05m
British Airways
Fri 13/1108:45
BHD
-
SFO
1 stop18h 00m
British Airways
Deal found 5/5£631
Mon 14/916:35
SFO
-
BHD
1 stop14h 55m
British Airways
Wed 16/920:35
BHD
-
SFO
1 stop25h 15m
British Airways
Deal found 7/5£643
Mon 2/1114:06
SFO
-
BHD
2 stops17h 59m
American Airlines
Fri 13/1106:45
BHD
-
SFO
2 stops19h 39m
American Airlines
Deal found 5/5£654
Fri 11/916:35
SFO
-
BHD
1 stop17h 35m
British Airways
Fri 18/1208:45
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 7/5£673
Sun 10/513:45
SFO
-
BHD
1 stop19h 10m
Virgin Atlantic
Tue 26/509:50
BHD
-
SFO
1 stop33h 55m
Virgin Atlantic
Deal found 6/5£741
Sun 10/508:25
SFO
-
BHD
2 stops16h 55m
KLM
Tue 26/509:50
BHD
-
SFO
2 stops22h 37m
KLM
Deal found 6/5£789
Sun 10/515:50
SFO
-
BFS
2 stops36h 25m
Multiple Airlines
Tue 26/514:45
BFS
-
SFO
1 stop38h 05m
Multiple Airlines
Deal found 6/5£791
Fri 11/906:00
SFO
-
BFS
3 stops31h 50m
Multiple Airlines
Fri 18/1206:00
BFS
-
SFO
3 stops40h 45m
Multiple Airlines
Deal found 7/5£834
Sun 21/606:00
SFO
-
BFS
3 stops23h 50m
Multiple Airlines
Sun 28/606:45
BFS
-
SFO
3 stops47h 10m
Multiple Airlines
Deal found 6/5£922
Tue 16/606:00
SFO
-
BFS
3 stops26h 20m
Multiple Airlines
Sun 21/622:10
BFS
-
SFO
3 stops28h 22m
Multiple Airlines
Deal found 4/5£964
Sun 21/606:35
SFO
-
BFS
3 stops27h 50m
Multiple Airlines
Sat 27/607:15
BFS
-
SFO
3 stops36h 45m
Multiple Airlines
Deal found 8/5£995
Wed 22/706:00
SFO
-
BFS
3 stops24h 30m
Multiple Airlines
Wed 29/707:30
BFS
-
SFO
3 stops41h 10m
Multiple Airlines
Deal found 6/5£1,006

Find 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 9 May 2026.

Round-trip from

£631

One-way from

£232

Popular in

June

Cheapest in

February

Average price

£642
British Airways
  • British Airways
  • 2/11-13/11
  • 2 total stops
  • 29h 50m total
  • San Francisco to Belfast
Search Deals
British Airways
  • British Airways
  • 21/9
  • 2 total stops
  • 18h 09m total
  • San Francisco to Belfast
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

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 9 May 2026.
Use the filters below to find and compare flights from San Francisco to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 14/9

16:35-15:30

1 stop14h 55m

Belfast City

Wed 16/9

20:35-13:50

1 stop25h 15m

£643
Fastest return journey

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/11

15:54-16:05

2 stops16h 11m

Belfast City

Fri 13/11

06:45-15:00

1 stop16h 15m

£648

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/11

09:00-10:40

2 stops17h 40m

Belfast City

Fri 13/11

06:45-18:24

2 stops19h 39m

£654

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 22/7

13:45-16:55

1 stop19h 10m

Belfast City

Wed 29/7

09:50-23:52

2 stops22h 02m

£817

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 22/7

17:07-16:55

2 stops15h 48m

Belfast City

Wed 29/7

09:50-23:52

2 stops22h 02m

£821

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 11/9

06:00-21:50

3 stops31h 50m

Belfast Intl

Fri 18/12

06:00-14:45

3 stops40h 45m

£834

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 16/6

06:00-16:20

3 stops26h 20m

Belfast Intl

Sun 21/6

22:10-18:32

3 stops28h 22m

£964

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/6

06:35-18:25

3 stops27h 50m

Belfast Intl

Sat 27/6

07:15-12:00

3 stops36h 45m

£995

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 22/7

06:00-14:30

3 stops24h 30m

Belfast Intl

Wed 29/7

07:30-16:40

3 stops41h 10m

£1,006

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/6

06:00-18:25

2 stops28h 25m

Belfast Intl

Sun 28/6

18:00-16:40

2 stops30h 40m

£1,074

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 25 resultsSorted by cheapest first
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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

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

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 11.0 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 14h 55m. 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 City 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.

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