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Cheap flights from Belfast to San Francisco Bay Area from £301

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
1 9月 — 8 9月1
1 adult

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 27 8月 2025.

Round-trip from

£567

One-way from

£301

Popular in

July

Cheapest in

September

Average price

£521
Air France
  • Air France
  • 22/9-29/9
  • 2 total stops
  • 45h 30m total
  • Belfast to San Francisco Bay Area
Search Deals
8/9
  • 8/9
  • 3 total stops
  • 57h 10m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£45 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 August 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 27 8月 2025.

週一 22/917:25BHD - SFO
1 stop26h 20mMultiple Airlines
週一 29/913:45SFO - BHD
1 stop19h 10mMultiple Airlines
Deal found 25/8£567
週一 22/917:25BHD - SFO
1 stop26h 20mKLM
週一 29/913:45SFO - BHD
2 stops19h 10mKLM
Deal found 25/8£570
週一 22/906:45BFS - SFO
2 stops22h 33mMultiple Airlines
週一 29/914:22SFO - BFS
2 stops24h 48mMultiple Airlines
Deal found 25/8£571
週一 22/906:30BHD - SFO
2 stops18h 48mDelta
週一 29/906:45SFO - BHD
2 stops26h 10mDelta
Deal found 25/8£574
週四 20/1106:15BFS - SFO
3 stops41h 50mMultiple Airlines
週五 5/1213:00SFO - BFS
3 stops25h 00mMultiple Airlines
Deal found 25/8£581
週一 22/919:30BHD - SFO
1 stop29h 55mBritish Airways
週一 29/919:20SFO - BHD
1 stop16h 15mBritish Airways
Deal found 25/8£611
週四 20/1110:40BHD - SFO
1 stop16h 05mBritish Airways
週五 5/1220:40SFO - BHD
1 stop14h 35mBritish Airways
Deal found 25/8£624
週五 10/1009:30BHD - SFO
2 stops21h 00mAmerican Airlines
週五 17/1011:48SFO - BHD
2 stops19h 42mAmerican Airlines
Deal found 25/8£664
週四 9/1007:00BFS - SFO
2 stops20h 00mMultiple Airlines
週四 16/1019:30SFO - BFS
2 stops19h 20mMultiple Airlines
Deal found 25/8£741
週四 20/1107:25BHD - SFO
3 stops36h 47mMultiple Airlines
週五 5/1213:00SFO - BHD
2 stops23h 30mMultiple Airlines
Deal found 25/8£756
週五 10/1007:05BFS - SFO
2 stops16h 50mMultiple Airlines
週五 17/1017:40SFO - BFS
2 stops19h 20mMultiple Airlines
Deal found 26/8£857

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 27 8月 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

週一 22/9

17:25-11:45

1 stop26h 20m

San Francisco

週一 29/9

13:45-16:55

1 stop19h 10m

£567

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週一 22/9

17:25-11:45

1 stop26h 20m

San Francisco

週一 29/9

13:45-16:55

2 stops19h 10m

£570

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

週一 22/9

06:45-21:18

2 stops22h 33m

San Francisco

週一 29/9

14:22-23:10

2 stops24h 48m

£571

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週一 22/9

06:30-17:18

2 stops18h 48m

San Francisco

週一 29/9

13:45-16:55

1 stop19h 10m

£574

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

週四 20/11

06:15-16:05

3 stops41h 50m

San Francisco

週五 5/12

13:00-22:00

3 stops25h 00m

£581

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週一 22/9

19:30-17:25

1 stop29h 55m

San Francisco

週一 29/9

19:20-19:35

1 stop16h 15m

£611

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週四 20/11

10:40-18:45

1 stop16h 05m

San Francisco

週五 5/12

20:40-19:15

1 stop14h 35m

£624

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週五 10/10

09:30-22:30

2 stops21h 00m

San Francisco

週五 17/10

11:48-15:30

2 stops19h 42m

£664

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

週四 9/10

07:00-19:00

2 stops20h 00m

San Francisco

週四 16/10

19:30-22:50

2 stops19h 20m

£741

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

週四 20/11

07:25-12:12

3 stops36h 47m

San Francisco

週五 5/12

13:00-20:30

2 stops23h 30m

£756

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 19 results
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

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 27 8月 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 27 8月 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

Crew

8.0

Food

6.5

Entertainment

6.9

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

Crew

8.0

Food

6.5

Entertainment

6.9

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
7,310 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Crew

8.0

Food

6.5

Entertainment

6.9

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?

    KLM, Delta, and British Airways can get you from Belfast to San Francisco Bay Area in just under 18h 48m. Your travel time can differ by up to 11h 07m. Airlines will cover a distance of 5038 mi. Both multi-stop and direct flights can be found to your destination and back.

  • 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 27 8月 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£405Average£567FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£470Average£521FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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

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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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