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Cheap flights from San Francisco Bay Area to Northern Ireland from £384

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BFS
20 Dec — 27 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco Bay Area to Northern Ireland

Keep the following information in mind while searching for San Francisco Bay Area to Northern Ireland flight deals. Data was last updated 20 November 2025.

Round-trip from

£489

One-way from

£384

Popular in

June

Cheapest in

April

Average price

£787
British Airways
  • British Airways
  • 3/3-10/3
  • 2 total stops
  • 33h 35m total
  • San Francisco Bay Area to Northern Ireland
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Aer Lingus
  • Aer Lingus
  • 3/4
  • 2 total stops
  • 19h 10m total
  • San Francisco Bay Area to Northern Ireland
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£86 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Find flight deals from San Francisco Bay Area to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco Bay Area to Northern Ireland
Explore the most affordable flight options available from San Francisco Bay Area to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2025.

Wed 3/1213:55SFO - BHD
1 stop18h 55mDelta
Sun 7/1206:30BHD - SFO
1 stop13h 20mDelta
Deal found 17/11£521
Fri 5/1211:40SJC - BHD
2 stops25h 20mVirgin Atlantic
Tue 9/1217:20BHD - SJC
2 stops32h 58mVirgin Atlantic
Deal found 17/11£532
Fri 5/1211:40SJC - BHD
2 stops21h 10mDelta
Tue 9/1206:30BHD - SJC
2 stops22h 11mDelta
Deal found 18/11£532
Sat 6/1213:55SFO - BHD
1 stop18h 55mMultiple Airlines
Fri 12/1217:20BHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 18/11£543
Wed 3/1207:21SFO - BHD
2 stops17h 49mAmerican Airlines
Sun 7/1206:30BHD - SFO
2 stops20h 00mAmerican Airlines
Deal found 17/11£800
Sat 6/1217:20SFO - BHD
2 stops16h 00mAer Lingus
Fri 12/1214:25BHD - SFO
2 stops33h 10mAer Lingus
Deal found 19/11£806
Fri 5/1212:30OAK - BHD
2 stops24h 30mVirgin Atlantic
Tue 9/1217:20BHD - OAK
2 stops38h 48mVirgin Atlantic
Deal found 19/11£829
Fri 5/1214:31OAK - BHD
2 stops18h 44mBritish Airways
Tue 9/1211:25BHD - OAK
2 stops20h 34mBritish Airways
Deal found 18/11£951
Sat 22/1123:15SFO - BHD
2 stops30h 00mBritish Airways
Mon 24/1118:50BHD - SFO
2 stops28h 10mBritish Airways
Deal found 18/11£1,084
Fri 5/1207:00STS - BHD
2 stops42h 10mAmerican Airlines
Tue 9/1215:05BHD - STS
2 stops56h 51mAmerican Airlines
Deal found 18/11£1,222
Sat 22/1123:15SFO - BHD
2 stops30h 40mAer Lingus
Mon 24/1119:25BHD - SFO
1 stop27h 35mAer Lingus
Deal found 18/11£1,393
Sat 22/1117:20SFO - BFS
2 stops20h 20mMultiple Airlines
Mon 24/1120:50BFS - SFO
2 stops23h 50mMultiple Airlines
Deal found 18/11£1,462

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco Bay Area 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 20 November 2025.
Use the filters below to find and compare flights from San Francisco Bay Area to Northern Ireland that are best for you.

Fly from

San Francisco Bay Area

Fly to

Northern Ireland

Route

Depart

Return

Price

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/3

17:30-18:40

1 stop17h 10m

Belfast City

Tue 10/3

06:35-16:00

1 stop16h 25m

£489

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/3

09:00-10:30

2 stops17h 30m

Belfast City

Tue 10/3

08:45-20:58

2 stops19h 13m

£499

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 11/2

17:30-19:10

1 stop17h 40m

Belfast City

Sun 15/2

17:35-15:00

1 stop29h 25m

£512

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:55-16:50

1 stop18h 55m

Belfast City

Sun 7/12

06:30-11:50

1 stop13h 20m

£521

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Fri 5/12

11:40-21:00

2 stops25h 20m

Belfast City

Tue 9/12

17:20-18:18

2 stops32h 58m

£532

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Fri 5/12

11:40-21:00

2 stops25h 20m

Belfast City

Tue 9/12

06:30-18:56

2 stops20h 26m

£532

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 11/2

11:02-16:50

2 stops21h 48m

Belfast City

Sun 15/2

17:20-21:45

2 stops36h 25m

£539

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 19/5

16:35-15:20

1 stop14h 45m

Belfast City

Thu 18/6

06:35-13:50

1 stop15h 15m

£565

Santa RosaBelfast

STS - BHD

STSBHD

Santa Rosa Sonoma County

Fri 16/1

16:23-17:15

2 stops16h 52m

Belfast City

Tue 20/1

08:45-15:53

2 stops39h 08m

£640

OaklandBelfast

OAK - BHD

OAKBHD

Oakland

Thu 16/4

07:00-13:15

2 stops22h 15m

Belfast City

Mon 20/4

13:50-17:38

2 stops35h 48m

£687

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 19 results
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2

Best time to book a flight from San Francisco Bay Area to Northern Ireland

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

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

Currently, April is the cheapest month in which you can book a flight from San Francisco Bay Area to Northern Ireland (average of £448). Flying from San Francisco Bay Area to Northern Ireland in November is currently the most expensive (average of £787). 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 Northern Ireland. 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 Northern Ireland?

    British Airways, American Airlines, and Delta can get you from San Francisco Bay Area to Northern Ireland in just under 17h 10m. Your travel time can differ by up to 8h 10m. The distance between San Francisco Bay Area and Northern Ireland is about 5038 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from San Francisco Bay Area to Northern Ireland (average of £448). Flying from San Francisco Bay Area to Northern Ireland in November is currently the most expensive (average of £787). 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 Bay Area to Northern Ireland?

Deals for San Francisco Bay Area to Northern Ireland 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 Bay Area to Northern Ireland?

Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco Bay Area to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Northern Ireland from San Francisco Bay Area? 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 Bay Area to Northern Ireland become cheaper?

Yes, Cheapflights offers price alerts on San Francisco Bay Area to Northern Ireland flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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