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 are the most popular routes from California to Belfast Intl Airport?

Most travelers choose Los Angeles Los Angeles - Belfast Intl, San Francisco - Belfast Intl or San Jose - Belfast Intl when deciding on the best route from California to Belfast Intl Airport.

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

When flying from California 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.

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

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

How can I find direct flights from California to Belfast Intl?

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

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

Yes. Cheapflights offers flight deals from California 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.

£231+ Cheap Flights from California to Belfast Intl Airport

Cheap flight deals from California to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from California to Belfast Intl
Explore the most affordable flight options available from California to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Tue 20/1013:00 -

3 stops26h 20m

Tue 3/1107:05 -

3 stops33h 25m

Deal found 9/9£678

Tue 27/1006:30 -

3 stops29h 20m

Tue 3/1107:05 -

3 stops23h 52m

Deal found 12/9£704

Mon 21/918:40 -

2 stops18h 15m

Mon 5/1022:20 -

2 stops24h 55m

Deal found 11/9£710

Sun 11/1013:00 -

2 stops21h 25m

Wed 14/1011:30 -

2 stops35h 00m

Deal found 12/9£767

Sat 24/1013:00 -

2 stops25h 25m

Sat 31/1023:00 -

2 stops24h 35m

Deal found 9/9£769

Mon 5/1008:10 -

3 stops22h 10m

Mon 19/1021:35 -

3 stops31h 12m

Deal found 10/9£871

Sun 27/917:40 -

2 stops17h 10m

Thu 1/1006:10 -

3 stops23h 45m

Deal found 11/9£875

Mon 28/1220:25 -

2 stops15h 50m

Tue 5/108:25 -

2 stops19h 39m

Deal found 8/9£922

Find flight deals from California to Belfast Intl

Round-trip from	£678
One-way from	£276

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

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30/9-31/12
3 total stops
27h 55m total
California to Belfast

Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 18/11

12:13-18:55

3 stops46h 42m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£242

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Tue 17/11

12:13-20:45

3 stops48h 32m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£243

Los AngelesBelfast

LAX Los Angeles Los Angeles - BFS Belfast Intl

LAXBFS

Los Angeles Los Angeles

Wed 30/9

06:00-17:55

3 stops27h 55m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£276

Fastest return journey

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

Los AngelesBelfast

LAX Los Angeles Los Angeles - BFS Belfast Intl

LAXBFS

Los Angeles Los Angeles

Sun 10/1

23:10-10:05

3 stops50h 55m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£299

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sat 14/11

17:20-20:15

2 stops18h 55m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£353

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Fri 13/11

17:20-13:40

2 stops36h 20m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£475

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

Tue 27/10

06:30-18:50

3 stops29h 20m

Belfast Intl

Tue 3/11

07:05-22:57

3 stops23h 52m

£704

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 14 resultsSorted by cheapest first

Best time to book a flight from California to Belfast Intl

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

SFO-BFS

LAX-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.

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Everything you need to know about your flight from California to Belfast Intl Airport

USCA-BFS

SFO-BFS

LAX-BFS

No data available for this route at this time. Please check back soon.

Related info for your journey

What are the most popular routes from California to Belfast Intl Airport?
Most travelers choose Los Angeles Los Angeles - Belfast Intl, San Francisco - Belfast Intl or San Jose - Belfast Intl when deciding on the best route from California to Belfast Intl Airport.
Can I find deals for flights from California to Belfast Intl that include hotel bookings?
Yes. In addition to deals on California to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from California to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Belfast Intl.
Can I find deals for business class flights from California to Belfast Intl?
Yes. Cheapflights offers flight deals from California 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.

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Deals for California to Belfast Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from California 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 California.

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

Certainly. Search results for flights to Belfast Intl from California 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 California to Belfast Intl become cheaper?

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Cheap flights from California to Belfast Intl Airport from £231

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from California to Belfast Intl

Cheapest flights from California to Belfast IntlExplore the most affordable flight options available from California to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Explore the most affordable flight options available from California to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from California to Belfast IntlDiscover carefully curated flight deals from California to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Discover carefully curated flight deals from California to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from California to Belfast IntlDiscover last-minute flight deals from California to Belfast Intl. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from California to Belfast Intl. Data last updated 13 September 2026 and is based on user searches.

One-way flights from California to Belfast IntlSearch for one-way flight options from California to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Search for one-way flight options from California to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

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Best time to book a flight from California to Belfast Intl

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

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Related info for your journey

What are the most popular routes from California to Belfast Intl Airport?

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

How can I find direct flights from California to Belfast Intl?

Can I find deals for business class flights from California 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 California 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 13 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 California to Belfast Intl by cabin class

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

California and Belfast Intl flights

Browse other California and Belfast Intl flight options. Last updated on 13 September 2026.

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

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

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

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Cheapest flights from California to Belfast Intl
Explore the most affordable flight options available from California to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from California to Belfast Intl
Discover carefully curated flight deals from California to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Last-minute flights from California to Belfast Intl
Discover last-minute flight deals from California to Belfast Intl. Data last updated 13 September 2026 and is based on user searches.

One-way flights from California to Belfast Intl
Search for one-way flight options from California to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.