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Cheap flights from Belfast to San Francisco Bay Area from £289

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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 16 September 2025.

Round-trip from

£469

One-way from

£289

Popular in

July

Cheapest in

September

Average price

£405
American Airlines
  • American Airlines
  • 5/3-9/3
  • 3 total stops
  • 34h 33m total
  • Belfast to San Francisco Bay Area
Search Deals
8/12
  • 8/12
  • 3 total stops
  • 54h 19m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£51 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Belfast to San Francisco Bay Area

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 16 September 2025.

Thu 9/1006:30BHD - SFO
2 stops19h 15mDelta
Thu 16/1013:45SFO - BHD
2 stops23h 30mDelta
Deal found 13/9£478
Thu 9/1006:35BHD - SFO
1 stop15h 15mBritish Airways
Thu 16/1016:30SFO - BHD
1 stop15h 00mBritish Airways
Deal found 13/9£515

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 16 September 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

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

06:35-15:00

1 stop16h 25m

San Francisco

Mon 9/3

09:32-10:40

2 stops18h 08m

£469

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:30-17:45

2 stops19h 15m

San Francisco

Thu 16/10

13:45-21:15

2 stops23h 30m

£478

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/10

06:35-13:50

1 stop15h 15m

San Francisco

Thu 16/10

16:30-15:30

1 stop15h 00m

£515

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 8/12

15:20-13:39

3 stops54h 19m

£289

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 14/11

06:30-17:49

3 stops43h 19m

£318

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 8/12

11:30-22:36

2 stops19h 06m

£375

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 14/11

16:55-14:45

3 stops29h 50m

£381

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 8/12

14:40-14:40

1 stop32h 00m

£384

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 14/11

11:30-18:45

1 stop15h 15m

£414

Flights are sorted by cheapest return flights first.

Deals found on 13/9

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 16 September 2025.

When flying from Belfast to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 September 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
10,000 reviews
Check prices

Comfort

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

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
10,000 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

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
7,361 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Boarding

7.5

Crew

8.0

Entertainment

6.9

Food

6.4

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?

    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.

  • What is the cheapest month to book a flight from Belfast to San Francisco Bay Area?

    Currently, February is the cheapest month in which you can book a flight from Belfast to San Francisco Bay Area (average of £538). Flying from Belfast to San Francisco Bay Area in July is currently the most expensive (average of £803). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£402Average£564FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£466Average£517FlexibilityNo 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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