In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What is the cheapest month to fly from Belfast to San Francisco Bay Area?

Flights from Belfast to San Francisco Bay Area lean towards being more expensive in December. Prices are generally better when you fly from Belfast to San Francisco Bay Area in April, with the cheapest ticket starting at £389.

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.

£537+ Flights from Belfast to San Francisco Bay Area

Cheap flight deals from Belfast to San Francisco Bay Area

Round-trip from	£573
One-way from	£537
Popular in	December
Cheapest in	April
Average price	£715

Delta
20/8-5/9
4 total stops
42h 07m total
Belfast to San Francisco Bay Area

Search Deals

21/7
3 total stops
54h 04m total
Belfast to San Francisco Bay Area

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£19 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 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 11 heinäkuu 2025.

ke 20/806:30BHD - SFO

2 stops18h 47mDelta

pe 5/909:35SFO - BHD

2 stops23h 20mDelta

Deal found 10/7£573

ke 20/817:25BHD - SFO

1 stop26h 20mMultiple Airlines

pe 5/915:05SFO - BHD

2 stops17h 50mMultiple Airlines

Deal found 10/7£663

ma 22/1211:30BHD - SFO

1 stop35h 30mBritish Airways

ti 13/117:30SFO - BHD

1 stop13h 20mBritish Airways

Deal found 9/7£709

ke 20/817:25BHD - SFO

1 stop26h 20mKLM

pe 5/913:45SFO - BHD

1 stop23h 30mKLM

Deal found 10/7£753

la 23/805:45BFS - SFO

2 stops23h 08mMultiple Airlines

la 30/807:30SFO - BFS

2 stops31h 00mMultiple Airlines

Deal found 9/7£836

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 11 heinäkuu 2025.

ke 20/806:30BHD - SFO

2 stops18h 47mDelta

pe 5/909:35SFO - BHD

2 stops23h 20mDelta

Deal found 10/7£573

ke 20/817:25BHD - SFO

1 stop26h 20mMultiple Airlines

pe 5/915:05SFO - BHD

2 stops17h 50mMultiple Airlines

Deal found 10/7£663

ma 22/1211:30BHD - SFO

1 stop35h 30mBritish Airways

ti 13/117:30SFO - BHD

1 stop13h 20mBritish Airways

Deal found 9/7£709

ke 20/817:25BHD - SFO

1 stop26h 20mKLM

pe 5/913:45SFO - BHD

1 stop23h 30mKLM

Deal found 10/7£753

la 23/805:45BFS - SFO

2 stops23h 08mMultiple Airlines

la 30/807:30SFO - BFS

2 stops31h 00mMultiple Airlines

Deal found 9/7£836

Last-minute flights from Belfast to San Francisco Bay Area
Discover last-minute flight deals from Belfast to San Francisco Bay Area. Data last updated 11 heinäkuu 2025 and is based on user searches.

ke 20/806:30BHD - SFO

2 stops18h 47mDelta

pe 5/909:35SFO - BHD

2 stops23h 20mDelta

Deal found 10/7£573

ke 20/817:25BHD - SFO

1 stop26h 20mMultiple Airlines

pe 5/915:05SFO - BHD

2 stops17h 50mMultiple Airlines

Deal found 10/7£663

ke 20/817:25BHD - SFO

1 stop26h 20mKLM

pe 5/913:45SFO - BHD

1 stop23h 30mKLM

Deal found 10/7£753

ke 20/811:30BHD - SFO

1 stop13h 55mBritish Airways

pe 5/916:30SFO - BHD

1 stop17h 45mBritish Airways

Deal found 9/7£766

la 23/805:45BFS - SFO

2 stops23h 08mMultiple Airlines

la 30/807:30SFO - BFS

2 stops31h 00mMultiple Airlines

Deal found 9/7£836

One-way flights from Belfast to San Francisco Bay Area
Search for one-way flight options from Belfast to San Francisco Bay Area. Find affordable one-way fares based on user searches. Data last updated 11 heinäkuu 2025.

ma 21/723:45BFS - SFO

3 stops54h 04mMultiple Airlines

Deal found 9/7£537

ma 21/709:05BHD - SFO

3 stops59h 08mMultiple Airlines

Deal found 9/7£609

ma 21/706:55BHD - SFO

2 stops20h 12mBritish Airways

Deal found 9/7£912

ma 21/717:25BHD - SFO

1 stop26h 20mKLM

Deal found 10/7£1,390

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to San Francisco Bay Area that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ke 20/8

06:30-17:17

2 stops18h 47m

San Francisco

pe 5/9

09:35-16:55

2 stops23h 20m

£573

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ke 20/8

17:25-11:45

1 stop26h 20m

San Francisco

pe 5/9

15:05-16:55

2 stops17h 50m

£663

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ma 22/12

11:30-15:00

1 stop35h 30m

San Francisco

ti 13/1

17:30-14:50

1 stop13h 20m

£709

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ke 20/8

17:25-11:45

1 stop26h 20m

San Francisco

pe 5/9

13:45-21:15

1 stop23h 30m

£753

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

la 23/8

05:45-20:53

2 stops23h 08m

San Francisco

la 30/8

07:30-22:30

2 stops31h 00m

£836

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

ma 21/7

23:45-21:49

3 stops54h 04m

£537

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ma 21/7

09:05-12:13

3 stops59h 08m

£609

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ma 21/7

06:55-19:07

2 stops20h 12m

£912

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

ma 21/7

17:25-11:45

1 stop26h 20m

£1,390

Flights are sorted by cheapest return flights first.

Deals found on 9/7

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 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.

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

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

See what other customers who have flown with Delta, KLM, andBritish 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.

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very Good

7,951 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,372 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

British Airways

6.6

Okay

7,109 reviews

Delta

8.0

Very Good

7,951 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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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Direct flights to United States

Top 2 airlines flying from Belfast to San Francisco Bay Area

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£402	Average£571	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£466	Average£517	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Belfast to San Francisco Bay Area?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco Bay Area from Belfast today with Cheapflights!

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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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Belfast to San Francisco Bay Area from £537

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 21/7. Fares are subject to change and may not be available on all flights or dates of travel.

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 11 heinäkuu 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast to San Francisco Bay Area

Cheapest flights from Belfast to San Francisco Bay AreaExplore 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 11 heinäkuu 2025.

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 11 heinäkuu 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Belfast to San Francisco Bay Area that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco Bay Area

What is the cheapest month to book a 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 11 heinäkuu 2025.

Reviews of airlines servicing San Francisco Bay Area

See what other customers who have flown with Delta, KLM, andBritish 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.

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.

Can I find deals for flights from Belfast to San Francisco Bay Area that include hotel bookings?

How can I 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?

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

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.

Alternative routes for Belfast to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Belfast to San Francisco Bay Area

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast to San Francisco Bay Area?

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

Can Cheapflights 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?

100% Free

Book with Flexibility

Travel Smart

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 11 heinäkuu 2025.