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Cheap flights from San Francisco to Belfast from £473

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BHD
4 Oca — 11 Oca1
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 5 Aralık 2025.

Cmt 6/1214:00SFO - BHD
2 stops18h 50mKLM
Cum 12/1217:20BHD - SFO
1 stop26h 30mKLM
Deal found 3/12£537
Cmt 6/1220:40SFO - BHD
1 stop33h 15mBritish Airways
Cum 12/1219:35BHD - SFO
1 stop31h 10mBritish Airways
Deal found 5/12£639
Cmt 6/1217:20SFO - BHD
2 stops16h 00mAer Lingus
Cum 12/1214:50BHD - SFO
2 stops32h 45mAer Lingus
Deal found 5/12£729
Sal 23/1217:20SFO - BHD
2 stops16h 00mBritish Airways
Sal 30/1219:25BHD - SFO
2 stops36h 41mBritish Airways
Deal found 2/12£1,265
Sal 23/1217:20SFO - BFS
2 stops14h 40mMultiple Airlines
Sal 30/1206:30BFS - SFO
2 stops21h 05mMultiple Airlines
Deal found 2/12£1,362
Sal 23/1213:55SFO - BHD
1 stop18h 55mKLM
Sal 30/1206:30BHD - SFO
1 stop13h 20mKLM
Deal found 2/12£1,409
Sal 23/1217:20SFO - BHD
2 stops16h 00mMultiple Airlines
Sal 30/1214:00BHD - SFO
3 stops30h 40mMultiple Airlines
Deal found 2/12£1,485
Per 18/1219:55SFO - BFS
1 stop33h 55mMultiple Airlines
Paz 4/120:55BFS - SFO
2 stops51h 35mMultiple Airlines
Deal found 3/12£2,197

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 5 Aralık 2025.

Round-trip from

£473

Popular in

June

Cheapest in

April

Average price

£851
British Airways
  • British Airways
  • 11/2-15/2
  • 2 total stops
  • 64h 50m total
  • San Francisco to Belfast
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£81 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 December 2025
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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 5 Aralık 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

Çar 11/2

17:30-07:30

1 stop30h 00m

Belfast City

Paz 15/2

12:10-15:00

1 stop34h 50m

£473

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Cmt 18/4

23:08-11:30

2 stops28h 22m

Belfast City

Cmt 25/4

19:00-13:50

1 stop26h 50m

£520

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Cmt 16/5

16:25-19:15

2 stops18h 50m

Belfast City

Pzt 25/5

13:50-13:50

1 stop32h 00m

£529

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Cmt 17/1

11:20-19:55

3 stops24h 35m

Belfast Intl

Cmt 24/1

23:10-14:35

3 stops47h 25m

£631

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Cmt 16/5

07:30-20:30

3 stops29h 00m

Belfast City

Pzt 25/5

07:00-21:24

3 stops46h 24m

£840

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Cmt 16/5

07:30-19:00

3 stops27h 30m

Belfast Intl

Pzt 25/5

21:25-21:24

3 stops31h 59m

£845

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sal 23/12

17:20-16:00

2 stops14h 40m

Belfast Intl

Sal 30/12

20:55-12:40

3 stops47h 45m

£1,398

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Per 18/12

19:55-13:50

1 stop33h 55m

Belfast Intl

Paz 4/1

06:30-20:10

1 stop21h 40m

£2,284

Flights are sorted by cheapest return flights first.

Deals found on 2/12

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, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £440). Flying from San Francisco to Belfast in November is currently the most expensive (average of £773). 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.

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 11.8 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 30h. The distance between San Francisco and Belfast is about 5038 mi.

  • 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, April is the cheapest month in which you can book a flight from San Francisco to Belfast (average of £440). Flying from San Francisco to Belfast in November is currently the most expensive (average of £773). 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

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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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