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Cheap flights from Belfast to San Francisco Bay Area from £332

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to San Francisco Bay Area

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to San Francisco Bay Area
Explore the most affordable flight options available from Belfast to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2026.

Mon 27/406:30
BHD
-
SFO
1 stop15h 20m
British Airways
Mon 4/516:35
SFO
-
BHD
1 stop16h 55m
British Airways
Deal found 13/3£588
Thu 7/520:35
BHD
-
SFO
1 stop25h 15m
British Airways
Mon 11/516:35
SFO
-
BHD
1 stop16h 55m
British Airways
Deal found 12/3£613
Sun 12/417:30
BHD
-
SFO
2 stops39h 53m
KLM
Sun 19/422:55
SFO
-
BHD
2 stops26h 25m
KLM
Deal found 15/3£639
Sun 26/416:30
BFS
-
SFO
3 stops37h 25m
Multiple Airlines
Sun 3/514:40
SFO
-
BFS
2 stops22h 20m
Multiple Airlines
Deal found 12/3£723
Mon 27/410:50
BFS
-
SFO
3 stops35h 50m
Multiple Airlines
Mon 4/516:45
SFO
-
BFS
2 stops22h 20m
Multiple Airlines
Deal found 13/3£793
Tue 28/421:25
BFS
-
SFO
2 stops23h 15m
Multiple Airlines
Tue 5/513:00
SFO
-
BFS
3 stops27h 05m
Multiple Airlines
Deal found 14/3£864
Sun 12/419:35
BFS
-
SFO
2 stops25h 05m
Multiple Airlines
Sun 19/417:55
SFO
-
BFS
1 stop20h 00m
Multiple Airlines
Deal found 15/3£933

Find flight deals from Belfast to San Francisco Bay Area

Keep the following information in mind while searching for Belfast to San Francisco Bay Area flight deals. Data was last updated 17 March 2026.

Round-trip from

£588

One-way from

£332

Popular in

March

Cheapest in

September

Average price

£1,054
British Airways
  • British Airways
  • 27/4-4/5
  • 2 total stops
  • 32h 15m total
  • Belfast to San Francisco Bay Area
Search Deals
2/9
  • 2/9
  • 3 total stops
  • 39h 50m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to San Francisco Bay Area 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 17 March 2026.
Use the filters below to find and compare flights from Belfast to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 7/5

20:35-13:50

1 stop25h 15m

San Francisco

Mon 11/5

16:35-17:30

1 stop16h 55m

£613

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 26/4

16:30-21:55

3 stops37h 25m

San Francisco

Sun 3/5

06:30-23:35

3 stops33h 05m

£745

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 28/4

21:25-12:40

2 stops23h 15m

San Francisco

Tue 5/5

13:00-00:05

3 stops27h 05m

£864

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 27/4

21:55-21:22

3 stops31h 27m

San Francisco

Mon 4/5

06:00-20:40

3 stops30h 40m

£873

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 12/4

19:35-12:40

2 stops25h 05m

San Francisco

Sun 19/4

17:55-21:55

1 stop20h 00m

£933

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 29/4

09:35-17:55

1 stop40h 20m

San Francisco

Wed 6/5

17:40-23:30

2 stops21h 50m

£1,005
Cheapest one-way

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 2/9

08:30-16:20

3 stops39h 50m

£332

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 7/4

20:10-16:35

3 stops52h 25m

£346

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 2/9

07:00-13:29

3 stops38h 29m

£411

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 2/9

06:30-13:50

1 stop15h 20m

£413

Flights are sorted by cheapest return flights first.

Deals found on 15/3

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Belfast 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 Belfast 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

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated 17 March 2026.
See what other customers who have flown with American Airlines and British Airways from Belfast to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,466 reviews
Check prices

Food

6.4

Comfort

7.2

Crew

7.9

Boarding

7.5

Overall

7.1

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,466 reviews
American Airlines
7.1
Good
11,466 reviews
Check prices

Food

6.4

Comfort

7.2

Crew

7.9

Boarding

7.5

Overall

7.1

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
British Airways
6.7
Okay
7,797 reviews
American Airlines
7.1
Good
11,466 reviews
Check prices

Food

6.4

Comfort

7.2

Crew

7.9

Boarding

7.5

Overall

7.1

Entertainment

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

Related info for your journey

Find useful and relevant information for your journey from Belfast to San Francisco Bay Area. 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 Belfast to San Francisco Bay Area?

    British Airways can get you from Belfast to San Francisco Bay Area in just under 25h 15m. Your travel time can differ by up to . Airlines will cover a distance of 5038 mi.

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Belfast to San Francisco Bay Area

Discover the top 2 airlines that operate flights from Belfast to San Francisco Bay Area. 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 17 March 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£448Average£610FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£477Average£529FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast to San Francisco Bay Area?

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Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco Bay Area?

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 Bay Area from Belfast.

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

Yes! Cheapflights helps users easily find flights from Belfast to San Francisco Bay Area with no change fees.

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Not ready to book yet? You can track prices for flights from Belfast to San Francisco Bay Area on Cheapflights with our Price Alert feature and get notified when better prices are available.

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