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Cheap flights from San Francisco to Northern Ireland from £154

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Northern Ireland
Explore the most affordable flight options available from San Francisco to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Wed 24/1215:37SFO - BHD
2 stops31h 53mBritish Airways
Tue 30/1219:25BHD - SFO
2 stops33h 40mBritish Airways
Deal found 16/12£1,113
Thu 18/1212:50SFO - BHD
1 stop19h 50mMultiple Airlines
Sat 20/1211:35BHD - SFO
1 stop33h 45mMultiple Airlines
Deal found 17/12£1,323
Thu 18/1209:00SFO - BHD
2 stops17h 20mBritish Airways
Sat 20/1215:05BHD - SFO
2 stops33h 59mBritish Airways
Deal found 17/12£1,364
Wed 24/1212:50SFO - BFS
1 stop35h 30mMultiple Airlines
Tue 30/1206:00BFS - SFO
1 stop19h 00mMultiple Airlines
Deal found 16/12£1,365
Wed 24/1212:50SFO - BHD
1 stop34h 40mMultiple Airlines
Tue 30/1206:35BHD - SFO
1 stop18h 25mMultiple Airlines
Deal found 16/12£1,404
Mon 22/1210:10SFO - BHD
2 stops41h 20mFinnair
Sun 4/112:10BHD - SFO
2 stops39h 34mFinnair
Deal found 16/12£1,655
Sun 21/1216:17SFO - BHD
2 stops18h 23mBritish Airways
Sat 3/106:35BHD - SFO
2 stops45h 34mBritish Airways
Deal found 16/12£1,780
Sun 21/1212:19SFO - BHD
2 stops17h 36mFinnair
Sun 4/112:10BHD - SFO
2 stops39h 34mFinnair
Deal found 16/12£1,795
Sun 21/1211:20SFO - BHD
2 stops21h 30mBritish Airways
Sun 4/112:10BHD - SFO
2 stops32h 29mBritish Airways
Deal found 15/12£1,907
Mon 22/1216:17SFO - BHD
2 stops18h 18mBritish Airways
Sat 3/106:35BHD - SFO
2 stops45h 34mBritish Airways
Deal found 16/12£1,927
Sun 21/1216:17SFO - BHD
2 stops18h 23mBritish Airways
Fri 2/111:30BHD - SFO
2 stops19h 28mBritish Airways
Deal found 16/12£1,975

Find flight deals from San Francisco to Northern Ireland

Keep the following information in mind while searching for San Francisco to Northern Ireland flight deals. Data was last updated 18 December 2025.

Round-trip from

£464

One-way from

£154

Popular in

June

Cheapest in

April

Average price

£849
British Airways
  • British Airways
  • 13/1-20/1
  • 2 total stops
  • 29h 45m total
  • San Francisco to Northern Ireland
Search Deals
British Airways
  • British Airways
  • 1/4
  • 1 total stop
  • 15h 00m total
  • San Francisco to Northern Ireland
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Northern Ireland 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 18 December 2025.
Use the filters below to find and compare flights from San Francisco to Northern Ireland that are best for you.

Fly from

San Francisco

Fly to

Northern Ireland

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 13/1

20:40-20:15

1 stop15h 35m

Belfast City

Tue 20/1

06:35-15:00

1 stop16h 25m

£465

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 12/1

20:40-20:15

1 stop15h 35m

Belfast City

Tue 27/1

08:45-15:00

1 stop14h 15m

£467

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 18/1

20:40-20:15

1 stop15h 35m

Belfast City

Mon 26/1

17:45-15:00

1 stop29h 15m

£482

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 13/1

20:40-18:40

1 stop14h 00m

Belfast City

Mon 26/1

19:25-15:00

1 stop27h 35m

£482

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 14/1

20:40-07:30

1 stop26h 50m

Belfast City

Wed 21/1

15:40-15:00

1 stop31h 20m

£489

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 14/1

17:30-07:30

1 stop30h 00m

Belfast City

Thu 22/1

10:40-15:00

1 stop36h 20m

£489

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 14/1

20:40-07:30

1 stop26h 50m

Belfast City

Mon 26/1

17:45-15:00

1 stop29h 15m

£489

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 12/1

20:40-18:35

1 stop13h 55m

Belfast City

Tue 27/1

08:45-21:37

2 stops20h 52m

£490

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 13/1

13:55-16:50

1 stop18h 55m

Belfast City

Thu 22/1

17:20-11:50

1 stop26h 30m

£498

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 13/1

13:55-16:50

1 stop18h 55m

Belfast City

Mon 26/1

17:20-11:50

1 stop26h 30m

£498

Flights are sorted by cheapest return flights first.

Deals found on 17/12

Showing 1-10 of 20 results
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Best time to book a flight from San Francisco to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland 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 Northern Ireland

What is the cheapest month to book a flight from San Francisco to Northern Ireland?

Currently, April is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of £439). Flying from San Francisco to Northern Ireland in November is currently the most expensive (average of £772). 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 Northern Ireland. 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 Northern Ireland?

    San Francisco (SFO), located 11.8 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Northern Ireland.

  • How long is the flight from San Francisco to Northern Ireland?

    For as low as £465, British Airways can have you in Northern Ireland from San Francisco in 15h 35m. The distance between San Francisco and Northern Ireland is about 5038 mi.

  • What are the most popular routes from San Francisco to Northern Ireland?

    When deciding which route to take from San Francisco to Northern Ireland consider San Francisco - Belfast Intl, San Francisco - Belfast City or San Francisco - Campbeltown Machrihanish as they are the most popular.

  • Can I find deals for flights from San Francisco to Northern Ireland that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Northern Ireland.

  • Can I find deals for business class flights from San Francisco to Northern Ireland?

    Yes. Cheapflights offers flight deals from San Francisco to Northern Ireland 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 Northern Ireland?

    Currently, April is the cheapest month in which you can book a flight from San Francisco to Northern Ireland (average of £439). Flying from San Francisco to Northern Ireland in November is currently the most expensive (average of £772). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from San Francisco to Northern Ireland?

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to Northern Ireland?

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Can Cheapflights find flights from San Francisco to Northern Ireland with no change fees?

Need flexible booking options for your flight to Northern Ireland from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to Northern Ireland become cheaper?

Of course! You can now track prices for flights from San Francisco to Northern Ireland 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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