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Cheap flights from Belfast Intl Airport to San Francisco from £592

BFS — SFO
22 Sep — 29 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to San Francisco

Mon 5/1014:20 -
3 stops32h 20m
Mon 12/1016:45 -
2 stops20h 10m
Deal found 21/8£660
Tue 15/906:15 -
2 stops18h 00m
Tue 22/919:35 -
2 stops17h 30m
Deal found 18/8£758
Tue 10/1117:05 -
3 stops29h 40m
Fri 20/1108:40 -
2 stops28h 00m
Deal found 21/8£766
Mon 7/910:50 -
2 stops32h 55m
Mon 14/920:10 -
2 stops18h 55m
Deal found 22/8£780
Sat 3/1006:20 -
2 stops17h 55m
Sat 10/1019:35 -
2 stops19h 05m
Deal found 19/8£792
Fri 2/1021:05 -
3 stops34h 15m
Fri 9/1015:05 -
3 stops24h 15m
Deal found 18/8£806

Find flight deals from Belfast Intl to San Francisco

Round-trip from

£585

Popular in

March

Cheapest in

May

Average price

£772
8/1-12/1
  • 8/1-12/1
  • 4 total stops
  • 63h 21m total
  • Belfast to San Francisco
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£115 potential increase over avg. return price).
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Cheapest flight prices on average. 8% potential price decrease (£41 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Belfast Intl Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 8/1

19:25-14:50

2 stops51h 25m

San Francisco

Tue 12/1

16:40-20:30

1 stop19h 50m

£592

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 5/10

14:20-14:40

3 stops32h 20m

San Francisco

Mon 12/10

16:45-20:55

2 stops20h 10m

£660
Fastest return journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 15/9

06:15-16:15

2 stops18h 00m

San Francisco

Tue 22/9

19:35-21:05

2 stops17h 30m

£758

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 7/9

10:50-11:45

2 stops32h 55m

San Francisco

Mon 14/9

20:10-23:05

2 stops18h 55m

£780

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 2/10

21:05-23:20

3 stops34h 15m

San Francisco

Fri 9/10

15:05-23:20

3 stops24h 15m

£806

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 16/9

06:10-12:15

3 stops38h 05m

San Francisco

Wed 23/9

08:10-13:45

2 stops21h 35m

£815

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 10/11

16:55-11:45

2 stops26h 50m

San Francisco

Fri 20/11

08:40-20:40

2 stops28h 00m

£837

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Sorted by cheapest first

Best time to book a flight from Belfast Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast Intl with our price prediction graph.
Estimated return price

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown with British Airways from Belfast Intl Airport to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,186 reviews
Check prices

Crew

7.7

Overall

6.7

Entertainment

6.5

Boarding

7.0

Comfort

6.8

Food

6.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
8,186 reviews
British Airways
6.7
Okay
8,186 reviews
Check prices

Crew

7.7

Overall

6.7

Entertainment

6.5

Boarding

7.0

Comfort

6.8

Food

6.4

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

Related info for your journey

  • What airport do you fly into for flights to San Francisco from Belfast Intl?

    If you book a flight to San Francisco from Belfast Intl, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.0 mi from the center of San Francisco. There are 0 flights from Belfast Intl to San Francisco per day from 1 airline.

  • What is the cheapest airline to fly from Belfast Intl Airport to San Francisco round-trip?

    Cheapflights users have booked flights from Belfast Intl Airport to San Francisco round-trip from £513. Users have found that British Airways is 31% cheaper than the other options available to this destination.

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

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

  • How can I find direct flights from Belfast Intl to San Francisco?

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

  • Can I find deals for business class flights from Belfast Intl to San Francisco?

    Yes. Cheapflights offers flight deals from Belfast Intl 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
San Bruno
Roseville
Newark
Bodega Bay
Sunnyvale
South San Francisco

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Belfast Intl to San Francisco

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£513Average£635FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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Cheapflights makes it easy to find Belfast Intl to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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