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Cheap flights from Belfast to San Francisco Bay Area from £337

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 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Find 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 October 2025.

Thu 13/1106:00BFS - SFO
2 stops22h 34mMultiple Airlines
Thu 20/1113:20SFO - BFS
2 stops21h 35mMultiple Airlines
Deal found 16/10£540
Thu 13/1106:30BHD - SFO
2 stops24h 41mVirgin Atlantic
Thu 20/1106:00SFO - BHD
2 stops26h 50mVirgin Atlantic
Deal found 16/10£607
Thu 13/1106:30BHD - SFO
1 stop13h 20mDelta
Thu 20/1106:00SFO - BHD
2 stops26h 50mDelta
Deal found 16/10£630
Thu 13/1114:15BHD - SFO
2 stops34h 15mMultiple Airlines
Thu 20/1113:20SFO - BHD
3 stops23h 40mMultiple Airlines
Deal found 16/10£774
Sun 30/1107:10BFS - SFO
2 stops17h 25mMultiple Airlines
Sun 7/1218:20SFO - BFS
2 stops16h 35mMultiple Airlines
Deal found 16/10£850
Sat 27/1206:35BHD - SFO
1 stop16h 25mMultiple Airlines
Sat 27/1219:25SFO - BHD
2 stops17h 05mMultiple Airlines
Deal found 16/10£1,036
Sat 27/1206:35BHD - SFO
1 stop16h 25mBritish Airways
Sat 27/1220:40SFO - BHD
1 stop15h 00mBritish Airways
Deal found 16/10£1,167

Cheap 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 October 2025.

Round-trip from

£540

One-way from

£337

Popular in

July

Cheapest in

January

Average price

£628
13/11-20/11
  • 13/11-20/11
  • 4 total stops
  • 44h 09m total
  • Belfast to San Francisco Bay Area
Search Deals
24/11
  • 24/11
  • 2 total stops
  • 55h 10m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 October 2025.
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

BFS - SFO

BFSSFO

Belfast Intl

Thu 13/11

06:00-20:34

2 stops22h 34m

San Francisco

Thu 20/11

13:20-18:55

2 stops21h 35m

£540

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

06:35-15:00

1 stop16h 25m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£566

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

11:05-18:45

1 stop15h 40m

San Francisco

Mon 9/3

07:26-10:40

2 stops20h 14m

£596

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sun 30/11

07:10-16:35

2 stops17h 25m

San Francisco

Sun 7/12

18:20-18:55

2 stops16h 35m

£850

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 24/11

15:20-14:30

2 stops55h 10m

£337

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 24/11

09:15-15:00

1 stop13h 45m

£461

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 24/11

18:50-15:35

2 stops28h 45m

£465

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 27/12

06:35-15:00

1 stop16h 25m

£465

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Sat 27/12

11:35-00:32

2 stops20h 57m

£468

Flights are sorted by cheapest return flights first.

Deals found on 15/10

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

What is the cheapest time of day to fly from BFS to XIH?

Find hourly flight availability from Belfast to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from Belfast to San Francisco Bay Area by exploring options for tickets in the morning.

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 October 2025.
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
11,040 reviews
Check prices

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
11,040 reviews
American Airlines
7.2
Good
11,040 reviews
Check prices

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
7,457 reviews
American Airlines
7.2
Good
11,040 reviews
Check prices

Boarding

7.5

Comfort

7.2

Overall

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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?

    American Airlines can get you from Belfast to San Francisco Bay Area in just under 16h 25m. 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£396Average£573FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£472Average£523FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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