Find flights
When to book
FAQs

Cheap flights from San Francisco Bay Area to Belfast from £234

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
26 Apr — 3 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco Bay Area to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco Bay Area to Belfast
Explore the most affordable flight options available from San Francisco Bay Area to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 March 2026.

Tue 14/419:40
SFO
-
BFS
1 stop30h 05m
Multiple Airlines
Wed 22/421:35
BFS
-
SFO
2 stops28h 20m
Multiple Airlines
Deal found 27/3£562
Sun 26/416:35
SFO
-
BHD
1 stop17h 05m
British Airways
Mon 11/518:30
BHD
-
SFO
1 stop27h 20m
British Airways
Deal found 25/3£614
Mon 9/1117:30
SFO
-
BHD
1 stop14h 35m
British Airways
Fri 13/1106:45
BHD
-
SFO
1 stop16h 15m
British Airways
Deal found 25/3£616
Tue 4/819:30
SFO
-
BHD
1 stop16h 10m
British Airways
Tue 18/818:20
BHD
-
SFO
1 stop27h 30m
British Airways
Deal found 22/3£620
Tue 4/815:37
SFO
-
BHD
2 stops17h 58m
American Airlines
Tue 18/813:45
BHD
-
SFO
2 stops17h 21m
American Airlines
Deal found 22/3£644
Sat 17/1016:35
SFO
-
BHD
1 stop14h 30m
British Airways
Wed 21/1006:30
BHD
-
SFO
1 stop15h 20m
British Airways
Deal found 22/3£653
Sun 6/916:35
SFO
-
BHD
1 stop14h 00m
British Airways
Wed 9/910:05
BHD
-
SFO
1 stop35h 45m
British Airways
Deal found 26/3£654
Thu 10/919:30
SFO
-
BHD
1 stop15h 55m
British Airways
Mon 14/911:35
BHD
-
SFO
1 stop34h 15m
British Airways
Deal found 24/3£658
Tue 14/419:40
SFO
-
BFS
1 stop30h 05m
Multiple Airlines
Mon 20/409:10
BFS
-
SFO
2 stops37h 25m
Multiple Airlines
Deal found 27/3£668
Tue 4/816:25
SJC
-
BHD
2 stops18h 30m
British Airways
Tue 18/809:40
BHD
-
SJC
2 stops20h 16m
British Airways
Deal found 22/3£668
Sun 26/413:45
SFO
-
BHD
1 stop19h 10m
Virgin Atlantic
Mon 11/517:30
BHD
-
SFO
2 stops33h 50m
Virgin Atlantic
Deal found 25/3£670
Sun 26/407:20
SJC
-
BHD
2 stops25h 35m
Delta
Mon 11/517:30
BHD
-
SJC
2 stops33h 32m
Delta
Deal found 25/3£690

Find flight deals from San Francisco Bay Area to Belfast

Keep the following information in mind while searching for San Francisco Bay Area to Belfast flight deals. Data was last updated 27 March 2026.

Round-trip from

£562

One-way from

£234

Popular in

June

Cheapest in

April

Average price

£649
14/4-22/4
  • 14/4-22/4
  • 3 total stops
  • 58h 25m total
  • San Francisco Bay Area to Belfast
Search Deals
KLM
  • KLM
  • 1/9
  • 1 total stop
  • 19h 10m total
  • San Francisco Bay Area to Belfast
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£84 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 March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco Bay Area 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 March 2026.
Use the filters below to find and compare flights from San Francisco Bay Area 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

Tue 14/4

19:40-09:45

1 stop30h 05m

Belfast Intl

Wed 22/4

09:35-17:55

1 stop40h 20m

£585

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 6/9

16:35-17:40

1 stop17h 05m

Belfast City

Wed 9/9

16:05-13:50

1 stop29h 45m

£616

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Tue 4/8

16:25-18:55

2 stops18h 30m

Belfast City

Tue 18/8

09:40-21:56

2 stops20h 16m

£668

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Sun 26/4

07:20-16:55

2 stops25h 35m

Belfast City

Mon 11/5

17:30-19:02

2 stops33h 32m

£690

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 8/4

16:35-15:40

1 stop15h 05m

Belfast City

Thu 16/4

06:30-17:40

1 stop19h 10m

£730

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 26/4

23:15-09:55

1 stop26h 40m

Belfast Intl

Mon 11/5

14:40-21:55

2 stops39h 15m

£736

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 15/4

19:30-19:50

1 stop16h 20m

Belfast City

Mon 20/4

16:50-13:50

1 stop29h 00m

£768
Fastest return journey

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 14/4

16:35-15:20

1 stop14h 45m

Belfast City

Fri 24/4

06:30-13:50

1 stop15h 20m

£768

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 14/4

19:40-09:45

1 stop30h 05m

Belfast Intl

Tue 21/4

06:45-23:55

2 stops25h 10m

£771

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 12/4

16:35-08:50

1 stop32h 15m

Belfast City

Tue 21/4

09:40-17:40

1 stop16h 00m

£775

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 55 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from San Francisco Bay Area to Belfast

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

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

Currently, April is the cheapest month in which you can book a flight from San Francisco Bay Area to Belfast (average of £440). Flying from San Francisco Bay Area to Belfast in June is currently the most expensive (average of £909). 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 Bay Area to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Airlines like British Airways and Delta fly from San Francisco Bay Area to Belfast in about 17h 05m. The time it takes to get you to your destination can typically vary by up to 8h 30m. Airlines will cover a distance of 5038 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from San Francisco Bay Area to Belfast?

    When deciding which route to take from San Francisco Bay Area to Belfast consider San Francisco - Belfast Intl, San Francisco - Belfast City or San Jose - Belfast City as they are the most popular.

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

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

  • How can I find direct flights from San Francisco Bay Area 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 Bay Area to Belfast.

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

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

    Currently, April is the cheapest month in which you can book a flight from San Francisco Bay Area to Belfast (average of £440). Flying from San Francisco Bay Area to Belfast in June is currently the most expensive (average of £909). 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 Bay Area 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 Bay Area to Belfast?

When you search for this flight from San Francisco Bay Area to Belfast, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from San Francisco Bay Area.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco Bay Area to Belfast flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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.