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Cheap flights from Belfast to San Francisco Bay Area from £608

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
5 Mar — 12 Mar1
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 3 February 2026.

Fri 13/306:45
BHD
-
SFO
2 stops22h 56m
British Airways
Mon 16/306:21
SFO
-
BHD
2 stops24h 54m
British Airways
Deal found 31/1£608
Fri 24/420:10
BHD
-
SFO
1 stop25h 40m
British Airways
Tue 28/416:35
SFO
-
BHD
1 stop17h 00m
British Airways
Deal found 2/2£615
Sun 1/307:10
BFS
-
SFO
3 stops39h 25m
Multiple Airlines
Mon 9/320:25
SFO
-
BFS
2 stops17h 45m
Multiple Airlines
Deal found 1/2£665
Fri 20/305:45
BFS
-
SFO
3 stops41h 00m
Multiple Airlines
Fri 27/308:25
SFO
-
BFS
3 stops23h 45m
Multiple Airlines
Deal found 3/2£919

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 3 February 2026.

Round-trip from

£608

Popular in

July

Cheapest in

January
British Airways
  • British Airways
  • 13/3-16/3
  • 4 total stops
  • 47h 50m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£34 potential savings vs. average return price).
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 3 February 2026.
Use the filters below to find and compare flights from Belfast to San Francisco Bay Area that are best for you.

Fly from

Belfast

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/4

20:10-13:50

1 stop25h 40m

San Francisco

Tue 28/4

16:35-17:35

1 stop17h 00m

£615

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

06:45-20:47

2 stops21h 02m

San Francisco

Mon 16/3

06:00-10:40

2 stops21h 40m

£622

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 1/3

07:10-14:35

3 stops39h 25m

San Francisco

Mon 9/3

20:25-21:10

2 stops17h 45m

£665

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 20/3

05:45-15:45

3 stops41h 00m

San Francisco

Fri 27/3

08:25-15:10

3 stops23h 45m

£919

Flights are sorted by cheapest return flights first.

Deals found on 2/2

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 3 February 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
7.2
Good
11,216 reviews
Check prices

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
American Airlines
7.2
Good
11,216 reviews
American Airlines
7.2
Good
11,216 reviews
Check prices

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
British Airways
6.7
Okay
7,712 reviews
American Airlines
7.2
Good
11,216 reviews
Check prices

Entertainment

6.9

Food

6.4

Crew

8.0

Boarding

7.5

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

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 40m. 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 3 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£389Average£548FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£463Average£514FlexibilityNo 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.

Can Cheapflights notify me if prices for flights from Belfast to San Francisco Bay Area become cheaper?

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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