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Cheap flights from San Francisco to Belfast from £292

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
27 Jul — 3 Aug1
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 27 June 2026.

Wed 9/906:00
SFO
-
BFS
3 stops25h 55m
Multiple Airlines
Sun 20/906:25
BFS
-
SFO
3 stops39h 40m
Multiple Airlines
Deal found 23/6£691
Wed 9/919:30
SFO
-
BHD
1 stop16h 20m
British Airways
Sun 20/915:50
BHD
-
SFO
1 stop30h 00m
British Airways
Deal found 26/6£710
Wed 9/913:27
SFO
-
BHD
2 stops18h 13m
American Airlines
Sun 20/913:10
BHD
-
SFO
2 stops19h 10m
American Airlines
Deal found 26/6£723
Wed 9/914:00
SFO
-
BHD
2 stops18h 55m
KLM
Sun 20/909:45
BHD
-
SFO
2 stops22h 12m
KLM
Deal found 23/6£738
Mon 27/706:00
SFO
-
BFS
3 stops31h 35m
Multiple Airlines
Wed 5/807:35
BFS
-
SFO
3 stops41h 05m
Multiple Airlines
Deal found 23/6£821
Mon 27/716:35
SFO
-
BHD
1 stop14h 55m
British Airways
Wed 5/820:35
BHD
-
SFO
2 stops34h 24m
British Airways
Deal found 23/6£835
Wed 9/906:40
SFO
-
BHD
3 stops21h 15m
Multiple Airlines
Sun 20/920:10
BHD
-
SFO
2 stops27h 40m
Multiple Airlines
Deal found 23/6£910
Sun 9/811:10
SFO
-
BFS
2 stops24h 15m
Multiple Airlines
Sun 16/822:00
BFS
-
SFO
2 stops25h 50m
Multiple Airlines
Deal found 25/6£962
Sat 19/1214:03
SFO
-
BHD
2 stops18h 42m
American Airlines
Tue 22/1206:35
BHD
-
SFO
1 stop20h 00m
American Airlines
Deal found 25/6£1,006
Fri 7/817:35
SFO
-
BFS
2 stops19h 40m
Multiple Airlines
Fri 14/807:20
BFS
-
SFO
3 stops36h 40m
Multiple Airlines
Deal found 23/6£1,015
Sat 19/1220:35
SFO
-
BHD
1 stop33h 20m
British Airways
Tue 22/1217:15
BHD
-
SFO
1 stop29h 40m
British Airways
Deal found 25/6£1,033

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 27 June 2026.

Round-trip from

£691

One-way from

£292
9/9-20/9
  • 9/9-20/9
  • 6 total stops
  • 65h 35m total
  • San Francisco to Belfast
Search Deals
12/8
  • 12/8
  • 2 total stops
  • 41h 50m total
  • San Francisco to Belfast
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 27 June 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 - BFS

SFOBFS

San Francisco

Wed 9/9

08:10-13:45

2 stops21h 35m

Belfast Intl

Sun 20/9

06:25-14:05

3 stops39h 40m

£707

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

13:29-15:40

2 stops18h 11m

Belfast City

Sun 20/9

20:10-13:50

1 stop25h 40m

£716

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

14:00-16:55

2 stops18h 55m

Belfast City

Sun 20/9

09:45-23:57

2 stops22h 12m

£738

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 27/7

06:00-21:35

3 stops31h 35m

Belfast Intl

Wed 5/8

07:35-16:40

3 stops41h 05m

£821

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 27/7

16:35-15:30

1 stop14h 55m

Belfast City

Wed 5/8

20:35-22:59

2 stops34h 24m

£835

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

06:40-11:55

3 stops21h 15m

Belfast City

Sun 20/9

20:10-15:50

2 stops27h 40m

£910

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 9/8

11:10-19:25

2 stops24h 15m

Belfast Intl

Sun 16/8

22:00-15:50

2 stops25h 50m

£962
Fastest return journey

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 19/12

14:03-16:45

2 stops18h 42m

Belfast City

Tue 22/12

06:35-18:35

1 stop20h 00m

£1,006

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 7/8

08:10-21:15

3 stops29h 05m

Belfast Intl

Fri 14/8

07:20-16:40

3 stops41h 20m

£1,025

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 19/12

20:35-13:55

1 stop33h 20m

Belfast City

Tue 22/12

17:15-14:55

1 stop29h 40m

£1,033

Flights are sorted by cheapest return flights first.

Deals found on 24/6

Showing 1-10 of 18 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
No data available for this route at this time. Please check back soon.

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 18h 11m. 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 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.

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