Cheap flights from San Francisco to Northern Ireland from £479

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 3 November 2025.

Mon 3/1113:55SFO - BHD
1 stop23h 05mVirgin Atlantic
Mon 17/1117:20BHD - SFO
1 stop26h 30mVirgin Atlantic
Deal found 2/11£479
Mon 3/1113:55SFO - BHD
1 stop23h 05mDelta
Mon 17/1117:20BHD - SFO
2 stops33h 09mDelta
Deal found 2/11£499
Tue 4/1110:30SFO - BHD
2 stops26h 30mDelta
Wed 12/1106:30BHD - SFO
1 stop13h 20mDelta
Deal found 31/10£500
Sun 7/1208:00SFO - BHD
2 stops26h 40mBritish Airways
Sun 14/1206:30BHD - SFO
1 stop16h 30mBritish Airways
Deal found 31/10£517
Wed 3/1213:55SFO - BHD
1 stop23h 05mDelta
Sun 7/1217:20BHD - SFO
1 stop26h 30mDelta
Deal found 1/11£519
Wed 3/1213:55SFO - BHD
1 stop18h 55mVirgin Atlantic
Sun 7/1217:20BHD - SFO
1 stop26h 30mVirgin Atlantic
Deal found 31/10£520
Sat 6/1223:59SFO - BHD
2 stops32h 51mBritish Airways
Sat 13/1218:00BHD - SFO
1 stop29h 00mBritish Airways
Deal found 1/11£528
Mon 3/1119:55SFO - BFS
1 stop17h 45mMultiple Airlines
Mon 17/1122:20BFS - SFO
2 stops53h 50mMultiple Airlines
Deal found 2/11£729
Tue 16/1217:20SFO - BFS
2 stops18h 55mMultiple Airlines
Tue 23/1209:00BFS - SFO
3 stops37h 30mMultiple Airlines
Deal found 1/11£778

Cheap 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 3 November 2025.

Round-trip from

£498

Popular in

January

Cheapest in

April

Average price

£785
American Airlines
  • American Airlines
  • 20/1-27/1
  • 4 total stops
  • 38h 10m total
  • San Francisco to Northern Ireland
Highest demand for flights based on searches. 16% potential increase in price (£101 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Average for round-trip flights in November 2025

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 3 November 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 20/1

09:00-11:30

2 stops18h 30m

Belfast City

Tue 27/1

08:45-20:25

2 stops19h 40m

£498

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 20/1

13:55-16:50

1 stop18h 55m

Belfast City

Tue 27/1

17:20-11:50

1 stop26h 30m

£503

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:55-21:00

1 stop23h 05m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£519

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:55-16:50

1 stop18h 55m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£520

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 7/12

13:55-16:50

1 stop18h 55m

Belfast City

Sun 14/12

06:30-11:50

1 stop13h 20m

£520

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sat 6/12

23:59-16:50

2 stops32h 51m

Belfast City

Sat 13/12

18:00-15:00

1 stop29h 00m

£528

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 20/1

10:15-21:40

3 stops27h 25m

Belfast Intl

Tue 27/1

08:35-14:30

3 stops37h 55m

£584

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Tue 16/12

17:20-20:15

2 stops18h 55m

Belfast Intl

Tue 23/12

09:00-14:30

3 stops37h 30m

£778

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sat 28/3

19:40-22:25

2 stops18h 45m

Belfast Intl

Sat 11/4

21:40-15:45

2 stops26h 05m

£916

Flights are sorted by cheapest return flights first.

Deals found on 1/11

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 £446). Flying from San Francisco to Northern Ireland in January is currently the most expensive (average of £1,018). 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 £498, American Airlines can have you in Northern Ireland from San Francisco in 18h 30m. The distance between San Francisco and Northern Ireland is about 5038 mi. Both multi-stop and direct flights can be found to your destination and back.

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

  • 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 £446). Flying from San Francisco to Northern Ireland in January is currently the most expensive (average of £1,018). 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.

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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.

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