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Cheap flights from Northern Ireland to San Francisco from £489

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 8/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SFO
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to San Francisco
Explore the most affordable flight options available from Northern Ireland to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 May 2026.

Tue 28/719:30
BHD
-
SFO
1 stop26h 20m
British Airways
Wed 19/819:30
SFO
-
BHD
1 stop15h 15m
British Airways
Deal found 16/5£650
Tue 28/706:30
BHD
-
SFO
2 stops26h 29m
Multiple Airlines
Wed 19/809:46
SFO
-
BHD
2 stops21h 54m
Multiple Airlines
Deal found 16/5£653
Tue 1/920:25
BHD
-
SFO
1 stop25h 25m
British Airways
Fri 25/916:21
SFO
-
BHD
2 stops17h 49m
British Airways
Deal found 18/5£666
Wed 2/906:30
BHD
-
SFO
1 stop15h 20m
American Airlines
Tue 15/916:35
SFO
-
BHD
1 stop17h 00m
American Airlines
Deal found 18/5£668
Wed 2/906:30
BHD
-
SFO
1 stop15h 20m
American Airlines
Thu 24/919:30
SFO
-
BHD
1 stop15h 55m
American Airlines
Deal found 16/5£669
Sun 26/713:10
BHD
-
SFO
1 stop32h 40m
British Airways
Mon 17/815:46
SFO
-
BHD
2 stops19h 39m
British Airways
Deal found 16/5£672
Mon 27/706:30
BHD
-
SFO
2 stops26h 29m
American Airlines
Wed 19/814:41
SFO
-
BHD
2 stops20h 04m
American Airlines
Deal found 16/5£673
Mon 31/809:50
BHD
-
SFO
1 stop33h 55m
Multiple Airlines
Thu 24/913:05
SFO
-
BHD
2 stops19h 50m
Multiple Airlines
Deal found 18/5£674
Mon 31/809:50
BHD
-
SFO
1 stop33h 55m
KLM
Thu 24/913:00
SFO
-
BHD
2 stops19h 55m
KLM
Deal found 16/5£674
Fri 12/611:25
BFS
-
SFO
1 stop34h 25m
Multiple Airlines
Fri 19/613:00
SFO
-
BFS
2 stops19h 30m
Multiple Airlines
Deal found 15/5£767
Thu 11/608:20
BFS
-
SFO
2 stops35h 40m
Multiple Airlines
Wed 17/606:00
SFO
-
BFS
2 stops29h 15m
Multiple Airlines
Deal found 16/5£787
Wed 5/808:50
BFS
-
SFO
3 stops39h 50m
Multiple Airlines
Wed 12/813:00
SFO
-
BFS
2 stops22h 15m
Multiple Airlines
Deal found 17/5£797

Find flight deals from Northern Ireland to San Francisco

Keep the following information in mind while searching for Northern Ireland to San Francisco flight deals. Data was last updated 20 May 2026.

Round-trip from

£650

One-way from

£489

Popular in

March

Cheapest in

August

Average price

£551
British Airways
  • British Airways
  • 28/7-19/8
  • 2 total stops
  • 41h 35m total
  • Northern Ireland to San Francisco
Search Deals
8/8
  • 8/8
  • 3 total stops
  • 47h 00m total
  • Northern Ireland to San Francisco
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£142 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£47 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to San Francisco 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 May 2026.
Use the filters below to find and compare flights from Northern Ireland to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 26/7

15:50-13:50

1 stop30h 00m

San Francisco

Wed 19/8

15:46-18:45

2 stops18h 59m

£672
Fastest return journey

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 27/7

06:30-13:50

1 stop15h 20m

San Francisco

Thu 20/8

16:35-15:30

1 stop14h 55m

£672

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 5/8

10:05-20:13

2 stops18h 08m

San Francisco

Wed 12/8

19:30-19:50

1 stop16h 20m

£683

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 7/11

06:35-15:00

1 stop16h 25m

San Francisco

Tue 10/11

17:30-18:40

1 stop17h 10m

£703

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Tue 1/9

20:25-13:50

1 stop25h 25m

San Francisco

Fri 18/9

16:35-18:10

1 stop17h 35m

£709

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sun 30/8

20:10-13:50

1 stop25h 40m

San Francisco

Fri 25/9

16:35-15:30

1 stop14h 55m

£716

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 2/9

06:30-13:50

1 stop15h 20m

San Francisco

Fri 18/9

16:35-18:10

1 stop17h 35m

£724

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 12/6

11:25-13:50

1 stop34h 25m

San Francisco

Fri 19/6

13:00-16:30

2 stops19h 30m

£767

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 5/8

08:50-16:40

3 stops39h 50m

San Francisco

Wed 12/8

13:00-19:15

2 stops22h 15m

£797

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 22/6

08:15-10:50

2 stops34h 35m

San Francisco

Mon 29/6

12:55-23:20

2 stops26h 25m

£865

Flights are sorted by cheapest return flights first.

Deals found on 15/5

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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

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

How much does it cost for a return flight from Northern Ireland to San Francisco?

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to San Francisco. 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 into for flights to San Francisco from Northern Ireland?

    For a flight from Northern Ireland to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.0 mi from the center of the city.

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

    Airlines like British Airways fly from Northern Ireland to San Francisco in about 30h. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 5038 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

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Alternative routes for Northern Ireland to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Northern Ireland to San Francisco

Discover the top airline that operate flights from Northern Ireland to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 May 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£428Average£587FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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 Northern Ireland to San Francisco?

When you search for this flight from Northern Ireland to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Northern Ireland.

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

Certainly. Search results for flights to San Francisco from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Northern Ireland to San Francisco 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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