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Cheap flights from Belfast Intl Airport to San Francisco Bay Area from £392

BFS — SFO
25 Sep — 2 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to San Francisco Bay Area

Enter your travel dates to find the best prices.

Cheapest flights from Belfast Intl to San Francisco Bay Area

Mon 5/1014:20 -
3 stops32h 20m
Mon 12/1016:45 -
2 stops20h 10m
Deal found 21/8£661
Tue 22/906:40 -
2 stops20h 20m
Tue 29/919:35 -
2 stops17h 30m
Deal found 25/8£691
Tue 10/1117:05 -
3 stops29h 40m
Fri 20/1108:40 -
2 stops28h 00m
Deal found 21/8£767
Mon 7/910:50 -
2 stops32h 55m
Mon 14/920:10 -
2 stops18h 55m
Deal found 22/8£781

Find flight deals from Belfast Intl to San Francisco Bay Area

Round-trip from

£661

One-way from

£392

Popular in

March

Cheapest in

May

Average price

£773
5/10-12/10
  • 5/10-12/10
  • 5 total stops
  • 52h 30m total
  • Belfast to San Francisco Bay Area
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30/9
  • 30/9
  • 3 total stops
  • 36h 15m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£116 potential increase over avg. return price).
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Cheapest flight prices on average. 8% potential price decrease (£42 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 Bay Area 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

Mon 5/10

14:20-14:40

3 stops32h 20m

San Francisco

Mon 12/10

16:45-20:55

2 stops20h 10m

£661
Fastest return journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 16/10

06:05-16:15

2 stops18h 10m

San Francisco

Sun 25/10

20:25-21:25

2 stops18h 00m

£753

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 22/9

21:15-21:55

3 stops32h 40m

San Francisco

Tue 29/9

15:05-19:20

2 stops20h 15m

£757

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

£781

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

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sat 19/9

06:20-16:15

2 stops17h 55m

San Francisco

Sat 26/9

19:35-22:40

2 stops19h 05m

£861

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 11/11

21:20-11:45

2 stops22h 25m

San Francisco

Fri 20/11

08:40-20:40

2 stops28h 00m

£862

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 18/9

20:15-23:04

2 stops34h 49m

San Francisco

Fri 25/9

08:30-16:30

2 stops24h 00m

£875
Cheapest one-way
Fastest single journey

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Wed 30/9

17:40-21:55

3 stops36h 15m

£392

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Sorted by cheapest first

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

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

Cheapflights Insights

Everything you need to know about your flight from Belfast Intl Airport to San Francisco Bay Area

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing San Francisco Bay Area

Check out reviews from past customers who have flown with British Airways from Belfast Intl Airport to San Francisco Bay Area to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,194 reviews
Check prices

Entertainment

6.5

Overall

6.7

Food

6.4

Crew

7.7

Boarding

7.0

Comfort

6.8

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
8,194 reviews
British Airways
6.7
Okay
8,194 reviews
Check prices

Entertainment

6.5

Overall

6.7

Food

6.4

Crew

7.7

Boarding

7.0

Comfort

6.8

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

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

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

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

    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 Bay Area.

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

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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Belfast Intl to San Francisco Bay Area

AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£513Average£636FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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