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.

£680+ 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

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 25 October 2026.

Sun 6/1209:15 -

3 stops26h 55m

Sun 13/1214:15 -

3 stops32h 10m

Deal found 21/10£680

Sun 6/1209:15 -

3 stops26h 55m

Thu 10/1210:10 -

3 stops37h 55m

Deal found 23/10£690

Tue 17/1106:02 -

3 stops31h 28m

Tue 24/1113:20 -

3 stops33h 25m

Deal found 21/10£716

Mon 7/1208:25 -

3 stops26h 20m

Mon 14/1206:45 -

2 stops20h 50m

Deal found 23/10£779

Fri 6/1116:45 -

2 stops21h 50m

Tue 10/1116:45 -

2 stops30h 05m

Deal found 23/10£799

Wed 9/1206:30 -

3 stops29h 15m

Wed 16/1220:50 -

2 stops27h 40m

Deal found 25/10£927

Find flight deals from San Francisco to Belfast Intl

Round-trip from	£680

6/12-13/12
6 total stops
59h 05m 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

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sun 6/12

09:15-20:10

3 stops26h 55m

Belfast Intl

Sun 13/12

14:15-14:25

3 stops32h 10m

£680

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sun 6/12

09:15-20:10

3 stops26h 55m

Belfast Intl

Thu 10/12

10:10-16:05

3 stops37h 55m

£690

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Tue 17/11

06:02-21:30

3 stops31h 28m

Belfast Intl

Tue 24/11

13:20-14:45

3 stops33h 25m

£716

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sun 11/4

17:35-21:50

2 stops20h 15m

Belfast Intl

Sat 17/4

17:55-14:35

2 stops28h 40m

£816

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Mon 7/12

19:25-20:15

2 stops16h 50m

Belfast Intl

Mon 14/12

15:00-16:30

2 stops33h 30m

£842

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sat 13/2

17:20-19:40

2 stops18h 20m

Belfast Intl

Sat 27/2

12:30-15:35

2 stops35h 05m

£859

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Fri 6/11

17:20-22:35

2 stops21h 15m

Belfast Intl

Tue 10/11

08:25-14:45

3 stops38h 20m

£896

Fastest return journey

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 9/12

19:25-22:00

2 stops18h 35m

Belfast Intl

Wed 16/12

20:50-16:30

2 stops27h 40m

£930

Flights are sorted by cheapest return flights first.

Deals found on 21/10

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

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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.

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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.

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Cheap flights from San Francisco to Belfast Intl Airport from £680

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/12. 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 25 October 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 25 October 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 25 October 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 25 October 2026.

Last-minute flights from San Francisco to Belfast IntlDiscover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 25 October 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 25 October 2026 and is based on user searches.

Find flight deals from San Francisco to Belfast Intl

Round-trip from

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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 25 October 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 25 October 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 25 October 2026.

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Check out other popular destinations found by fellow travellers in 2026

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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?

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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 25 October 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 25 October 2026.

Last-minute flights from San Francisco to Belfast Intl
Discover last-minute flight deals from San Francisco to Belfast Intl. Data last updated 25 October 2026 and is based on user searches.