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Cheap flights from Belfast to San Francisco Bay Area from £598

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
4 Jan — 11 Jan1
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.

Best flights from Belfast to San Francisco Bay Area
Discover carefully curated flight deals from Belfast to San Francisco Bay Area that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 December 2025.

Thu 15/120:00BHD - SFO
1 stop27h 00mBritish Airways
Mon 19/107:00SFO - BHD
2 stops19h 40mBritish Airways
Deal found 2/12£598
Sat 17/123:10BFS - SFO
3 stops47h 25mMultiple Airlines
Sat 24/110:15SFO - BFS
3 stops25h 40mMultiple Airlines
Deal found 3/12£614
Thu 22/120:00BHD - SFO
1 stop27h 00mBritish Airways
Mon 26/107:30SFO - BHD
2 stops19h 10mBritish Airways
Deal found 4/12£604

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 5 December 2025.

Round-trip from

£598

Popular in

July

Cheapest in

January

Average price

£714
British Airways
  • British Airways
  • 15/1-19/1
  • 3 total stops
  • 46h 40m total
  • Belfast to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£85 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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 5 December 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 15/1

20:00-15:00

1 stop27h 00m

San Francisco

Mon 19/1

07:00-10:40

2 stops19h 40m

£598

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 22/1

20:00-15:00

1 stop27h 00m

San Francisco

Mon 26/1

07:30-10:40

2 stops19h 10m

£604

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 17/1

23:10-14:35

3 stops47h 25m

San Francisco

Sat 24/1

10:15-19:55

3 stops25h 40m

£614

Flights are sorted by cheapest return flights first.

Deals found on 2/12

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 5 December 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 5 December 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
11,047 reviews
Check prices

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.5

Entertainment

6.9

Boarding

7.5

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
11,047 reviews
American Airlines
7.2
Good
11,047 reviews
Check prices

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.5

Entertainment

6.9

Boarding

7.5

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
7,562 reviews
American Airlines
7.2
Good
11,047 reviews
Check prices

Crew

8.0

Overall

7.2

Comfort

7.2

Food

6.5

Entertainment

6.9

Boarding

7.5

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 27h. 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 5 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£399Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£475Average£526FlexibilityNo 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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