In terms of precipitation, rainfall in Belfast Intl Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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

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

What airport do you fly from for flights from San Francisco to Belfast Intl?

San Francisco (SFO), located 11.0 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Belfast Intl. 0 airlines have flights from San Francisco to Belfast Intl on a regular basis. Booking flights from San Francisco to Belfast Intl should not be difficult; the airport handles an average of 0 outbound flights to Belfast Intl per day.

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

Yes. In addition to deals on San Francisco to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Francisco to Belfast Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Belfast Intl.

Can I find deals for business class flights from San Francisco to Belfast Intl?

Yes. Cheapflights offers flight deals from San Francisco to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£283+ Cheap Flights from San Francisco to Belfast Intl Airport

Cheap flight deals from San Francisco to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from San Francisco to Belfast Intl
Explore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Tue 20/1013:00 -

3 stops26h 20m

Tue 3/1107:05 -

3 stops33h 25m

Deal found 9/9£678

Sat 24/1013:00 -

2 stops25h 25m

Sat 31/1023:00 -

2 stops24h 35m

Deal found 9/9£769

Sun 11/1008:30 -

2 stops25h 55m

Wed 14/1011:30 -

2 stops35h 00m

Deal found 9/9£781

Mon 5/1008:10 -

3 stops22h 10m

Mon 19/1021:35 -

3 stops31h 12m

Deal found 10/9£870

Find flight deals from San Francisco to Belfast Intl

Round-trip from	£678
One-way from	£283

20/10-3/11
6 total stops
59h 45m total
San Francisco to Belfast

Search Deals

18/11-31/12
2 total stops
18h 25m total
San Francisco to Belfast

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 18/11

17:20-19:45

2 stops18h 25m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£283

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 25/11

17:20-19:45

2 stops18h 25m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£283

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Tue 24/11

21:40-19:45

3 stops38h 05m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£294

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Tue 20/10

13:00-23:20

3 stops26h 20m

Belfast Intl

Tue 3/11

07:05-08:30

3 stops33h 25m

£678

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sat 24/10

13:00-22:25

2 stops25h 25m

Belfast Intl

Sat 31/10

23:00-16:35

2 stops24h 35m

£769

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Mon 5/10

08:10-14:20

3 stops22h 10m

Belfast Intl

Mon 19/10

21:35-20:47

3 stops31h 12m

£870

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Sorted by cheapest first

Best time to book a flight from San Francisco to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from San Francisco with our price prediction graph.

SFO-BFS

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.

Related info for your journey

What airport do you fly from for flights from San Francisco to Belfast Intl?
San Francisco (SFO), located 11.0 mi from the city center, is the airport you fly out of when you book flights from San Francisco to Belfast Intl. 0 airlines have flights from San Francisco to Belfast Intl on a regular basis. Booking flights from San Francisco to Belfast Intl should not be difficult; the airport handles an average of 0 outbound flights to Belfast Intl per day.
Can I find deals for flights from San Francisco to Belfast Intl that include hotel bookings?
Yes. In addition to deals on San Francisco to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Belfast Intl.
Can I find deals for business class flights from San Francisco to Belfast Intl?
Yes. Cheapflights offers flight deals from San Francisco to Belfast Intl 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

Armagh

Newry

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Belfast Intl flight routes

Complete your trip

Direct flights to Northern Ireland

Flights by cabin class

Other flight options

Other flights from San Francisco

Popular flights

Alternative routes for San Francisco to Belfast Intl

Los Angeles to Belfast Intl flights

Los Angeles to Belfast City flights

San Francisco to Belfast City flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Francisco to Belfast Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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 Belfast Intl from San Francisco.

Can Cheapflights find flights from San Francisco to Belfast Intl with no change fees?

Certainly. Search results for flights to Belfast Intl from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from San Francisco to Belfast Intl become cheaper?

Not ready to book yet? You can track prices for flights from San Francisco to Belfast Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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 San Francisco to Belfast Intl Airport from £283

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Francisco to Belfast Intl

Cheapest flights from San Francisco to Belfast IntlExplore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Explore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from San Francisco to Belfast IntlDiscover carefully curated flight deals from San Francisco to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Discover carefully curated flight deals from San Francisco to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from San Francisco to Belfast IntlDiscover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

One-way flights from San Francisco to Belfast IntlSearch for one-way flight options from San Francisco to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Search for one-way flight options from San Francisco to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.

Find flight deals from San Francisco to Belfast Intl

Round-trip from

One-way from

Cheapflights Fare Finder

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

Best time to book a flight from San Francisco to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from San Francisco with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from San Francisco to Belfast Intl?

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

How can I find direct flights from San Francisco to Belfast Intl?

Can I find deals for business class flights from San Francisco to Belfast Intl?

Travelling to a place near Belfast Intl Airport?

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 San Francisco to Belfast Intl

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

Other flights to Belfast Intl

Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 11 September 2026.

Complete your trip

Complete your trip to Belfast Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Northern Ireland

Book a non-stop flight to one of these other cities located in Northern Ireland.

Search flights from San Francisco to Belfast Intl by cabin class

Find flights from San Francisco to Belfast Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

San Francisco and Belfast Intl flights

Browse other San Francisco and Belfast Intl flight options. Last updated on 11 September 2026.

Other flights from San Francisco

Browse through other flights departing from San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 11 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

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

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

Can Cheapflights find flights from San Francisco to Belfast Intl with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to Belfast Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from San Francisco to Belfast Intl
Explore the most affordable flight options available from San Francisco to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2026.

Best flights from San Francisco to Belfast Intl
Discover carefully curated flight deals from San Francisco to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 September 2026.

Last-minute flights from San Francisco to Belfast Intl
Discover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 11 September 2026 and is based on user searches.

One-way flights from San Francisco to Belfast Intl
Search for one-way flight options from San Francisco to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 11 September 2026.