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Cheap flights from San Francisco to Belfast from £276

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
20 8월 — 27 8월1
1 adult

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 15 8월 2025.

Round-trip from

£487

One-way from

£276

Popular in

January

Cheapest in

October

Average price

£570
British Airways
  • British Airways
  • 3/12-7/12
  • 2 total stops
  • 28h 55m total
  • San Francisco to Belfast
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15/9
  • 15/9
  • 3 total stops
  • 58h 48m total
  • San Francisco to Belfast
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Highest demand for flights based on searches. 15% potential increase in price (£87 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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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 15 8월 2025.

수 3/1217:30SFO - BHD
1 stop15h 05mBritish Airways
일 7/1209:10BHD - SFO
1 stop13h 50mBritish Airways
Deal found 13/8£487
토 16/815:21SFO - BHD
2 stops33h 44mBritish Airways
금 29/806:35BHD - SFO
2 stops24h 24mBritish Airways
Deal found 12/8£501
목 14/813:45SFO - BHD
1 stop19h 10mMultiple Airlines
목 21/817:25BHD - SFO
1 stop26h 20mMultiple Airlines
Deal found 14/8£601
수 3/1211:05SFO - BHD
2 stops21h 45mDelta
일 7/1206:30BHD - SFO
1 stop13h 20mDelta
Deal found 13/8£605
일 28/912:50SFO - BFS
2 stops19h 05mMultiple Airlines
일 5/1023:30BFS - SFO
3 stops46h 05mMultiple Airlines
Deal found 14/8£688
금 29/821:28SFO - BHD
2 stops28h 22mBritish Airways
토 6/906:50BHD - SFO
2 stops17h 05mBritish Airways
Deal found 13/8£763
목 14/813:00SFO - BFS
1 stop26h 25mMultiple Airlines
목 21/806:35BFS - SFO
1 stop20h 35mMultiple Airlines
Deal found 14/8£856
토 16/819:30SFO - BFS
2 stops19h 00mMultiple Airlines
금 29/806:05BFS - SFO
3 stops37h 31mMultiple Airlines
Deal found 12/8£1,061
금 29/816:30SFO - BFS
2 stops25h 25mMultiple Airlines
토 6/912:55BFS - SFO
2 stops29h 40mMultiple Airlines
Deal found 13/8£1,462

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 15 8월 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

수 3/12

17:30-16:35

1 stop15h 05m

Belfast City

일 7/12

09:10-15:00

1 stop13h 50m

£487

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

수 3/12

11:05-16:50

2 stops21h 45m

Belfast City

일 7/12

06:30-11:50

1 stop13h 20m

£605

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

수 3/12

11:05-16:50

2 stops21h 45m

Belfast City

일 7/12

06:30-11:50

1 stop13h 20m

£605

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

일 28/9

12:50-15:55

2 stops19h 05m

Belfast Intl

일 5/10

23:30-13:35

3 stops46h 05m

£688

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

금 29/8

21:28-09:50

2 stops28h 22m

Belfast City

토 6/9

06:50-15:55

2 stops17h 05m

£763

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

금 29/8

16:30-01:55

2 stops25h 25m

Belfast Intl

토 6/9

12:55-10:35

2 stops29h 40m

£1,462

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

월 15/9

14:12-09:00

3 stops58h 48m

£276

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

화 2/9

15:21-17:30

2 stops18h 09m

£288

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

화 19/8

08:00-10:35

2 stops18h 35m

£290

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

화 19/8

13:45-16:55

1 stop19h 10m

£320

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 15 results
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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

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.

  • 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

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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.
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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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