How long is the flight from California to Belfast?

For as low as £639, Delta can have you in Belfast from California in 17h 05m. The distance from California to Belfast is about 5038 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Belfast 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 when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast, 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?

While some choose either San Francisco - Belfast City or Los Angeles - Belfast Intl, San Francisco - Belfast Intl is the most popular route from California to Belfast.

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

When flying from California to Belfast, 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 that include hotel bookings?

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

How can I find direct flights from California to Belfast?

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

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

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

£243+ Cheap Flights from California to Belfast

Cheap flight deals from California to Belfast

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from California to Belfast
Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Mon 19/1013:50 -

1 stop19h 05m

Mon 2/1109:40 -

1 stop34h 05m

Deal found 16/9£553

Tue 13/1013:45 -

1 stop19h 10m

Tue 27/1017:15 -

1 stop26h 30m

Deal found 18/9£587

Sun 15/1113:50 -

1 stop35h 20m

Tue 8/1209:40 -

1 stop34h 05m

Deal found 16/9£588

Mon 28/909:30 -

2 stops23h 25m

Tue 6/1017:30 -

1 stop26h 15m

Deal found 16/9£592

Tue 17/1107:00 -

2 stops18h 10m

Wed 25/1109:45 -

1 stop34h 00m

Deal found 14/9£592

Mon 28/913:45 -

1 stop19h 10m

Mon 5/1017:30 -

2 stops30h 24m

Deal found 16/9£594

Mon 19/1015:05 -

2 stops17h 50m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 16/9£596

Mon 28/909:30 -

2 stops23h 25m

Wed 7/1009:50 -

2 stops22h 06m

Deal found 16/9£598

Wed 28/1015:34 -

2 stops18h 11m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 17/9£600

Wed 28/1008:00 -

2 stops18h 10m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 14/9£601

Mon 23/1113:50 -

1 stop35h 20m

Mon 30/1109:40 -

1 stop34h 05m

Deal found 14/9£607

Mon 12/1009:45 -

2 stops23h 10m

Mon 19/1017:30 -

2 stops31h 42m

Deal found 14/9£608

Best flights from California to Belfast
Discover carefully curated flight deals from California to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Sun 15/1113:50 -

1 stop35h 20m

Wed 9/1209:40 -

1 stop34h 05m

Deal found 16/9£588

Mon 19/1015:05 -

2 stops17h 50m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 16/9£596

Mon 12/1009:45 -

2 stops23h 10m

Mon 19/1017:30 -

2 stops31h 42m

Deal found 14/9£608

Sun 24/106:15 -

2 stops18h 55m

Sun 31/117:20 -

1 stop26h 25m

Deal found 15/9£634

Tue 13/1019:30 -

1 stop17h 05m

Tue 27/1011:40 -

1 stop35h 15m

Deal found 18/9£639

Mon 18/113:50 -

1 stop19h 00m

Mon 25/109:40 -

1 stop34h 05m

Deal found 15/9£595

Wed 28/1015:34 -

2 stops18h 11m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 17/9£600

Mon 19/1020:50 -

1 stop35h 05m

Mon 2/1117:30 -

2 stops31h 05m

Deal found 16/9£619

Wed 28/1009:22 -

2 stops16h 48m

Mon 2/1117:15 -

1 stop26h 30m

Deal found 18/9£600

Mon 1/218:00 -

1 stop16h 35m

Fri 5/206:45 -

1 stop19h 45m

Deal found 17/9£669

Mon 28/913:45 -

1 stop19h 10m

Mon 5/1017:30 -

1 stop26h 15m

Deal found 16/9£679

Mon 16/1116:40 -

2 stops55h 40m

Thu 10/1214:30 -

1 stop37h 40m

Deal found 16/9£626

Mon 18/105:55 -

2 stops26h 55m

Mon 25/109:40 -

2 stops38h 52m

Deal found 15/9£606

Thu 15/1019:30 -

1 stop15h 15m

Mon 26/1019:40 -

1 stop27h 15m

Deal found 16/9£677

Wed 14/1007:00 -

2 stops18h 20m

Mon 26/1017:15 -

1 stop26h 30m

Deal found 15/9£684

Tue 27/1010:20 -

2 stops28h 10m

Thu 29/1008:50 -

2 stops30h 30m

Deal found 13/9£633

Wed 20/105:55 -

2 stops43h 15m

Mon 25/109:40 -

2 stops38h 52m

Deal found 15/9£606

Mon 5/1019:26 -

2 stops15h 19m

Wed 14/1006:30 -

2 stops19h 14m

Deal found 15/9£684

Thu 15/1007:00 -

2 stops18h 20m

Mon 26/1017:15 -

1 stop26h 30m

Deal found 15/9£721

Wed 30/910:40 -

2 stops24h 35m

Tue 13/1011:55 -

2 stops35h 20m

Deal found 18/9£656

Wed 20/107:15 -

2 stops25h 35m

Wed 27/117:20 -

2 stops31h 37m

Deal found 15/9£606

Mon 18/109:50 -

2 stops23h 00m

Mon 25/117:20 -

2 stops30h 56m

Deal found 15/9£606

Fri 15/120:35 -

1 stop14h 35m

Sun 24/112:00 -

1 stop14h 45m

Deal found 15/9£736

Sun 8/1108:25 -

3 stops28h 20m

Sat 14/1123:00 -

3 stops47h 25m

Deal found 15/9£672

Sun 17/107:15 -

2 stops25h 35m

Wed 27/117:20 -

2 stops31h 37m

Deal found 15/9£606

Sat 17/1016:35 -

1 stop14h 30m

Sun 25/1020:30 -

1 stop26h 25m

Deal found 14/9£783

Tue 17/1115:05 -

2 stops21h 25m

Wed 25/1106:55 -

1 stop21h 15m

Deal found 14/9£730

Sun 17/105:45 -

2 stops27h 05m

Sat 23/117:20 -

2 stops30h 56m

Deal found 15/9£643

Thu 29/1020:25 -

2 stops16h 55m

Thu 5/1109:05 -

3 stops21h 52m

Deal found 14/9£735

Mon 28/914:48 -

2 stops18h 37m

Mon 5/1006:30 -

2 stops24h 13m

Deal found 16/9£814

Find flight deals from California to Belfast

Round-trip from	£553
One-way from	£243

Virgin Atlantic
19/10-2/11
2 total stops
53h 10m total
California to Belfast

Search Deals

20/10-31/12
3 total stops
41h 27m total
California to Belfast

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Los AngelesBelfast

LAX Los Angeles - BFS Belfast Intl

LAXBFS

Los Angeles

Wed 25/11

11:38-19:50

3 stops48h 12m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£265

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Mon 16/11

16:40-20:55

3 stops44h 15m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£280

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 18/11

17:20-12:30

3 stops59h 10m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£292

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Tue 9/3

17:20-20:55

2 stops19h 35m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£307

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Wed 10/3

19:25-12:35

2 stops33h 10m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£315

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Sun 4/10

06:07-16:30

3 stops50h 23m

Belfast City

Wed 31/12

00:00-15:00

Nonstop0h 00m

£319

Los AngelesBelfast

LAX Los Angeles - BHD Belfast City

LAXBHD

Los Angeles

Fri 25/12

14:20-20:35

3 stops46h 15m

Belfast City

Wed 31/12

00:00-15:00

Nonstop0h 00m

£324

San FranciscoBelfast

SFO San Francisco - BFS Belfast Intl

SFOBFS

San Francisco

Sat 13/3

08:00-06:45

3 stops38h 45m

Belfast Intl

Wed 31/12

00:00-15:00

Nonstop0h 00m

£325

Los AngelesBelfast

LAX Los Angeles - BHD Belfast City

LAXBHD

Los Angeles

Fri 25/12

18:25-17:25

1 stop15h 00m

Belfast City

Wed 31/12

00:00-15:00

Nonstop0h 00m

£328

Los AngelesBelfast

LAX Los Angeles - BHD Belfast City

LAXBHD

Los Angeles

Wed 25/11

20:25-10:55

2 stops30h 30m

Belfast City

Wed 31/12

00:00-15:00

Nonstop0h 00m

£329

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 47 resultsSorted by cheapest first

...

Best time to book a flight from California to Belfast

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

SFO-BFS

LAX-BFS

LAX-BHD

SFO-BHD

ONT-BHD

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 California to Belfast

USCA-BF1

SFO-BFS

LAX-BFS

LAX-BHD

SFO-BHD

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

Related info for your journey

How long is the flight from California to Belfast?
For as low as £639, Delta can have you in Belfast from California in 17h 05m. The distance from California to Belfast is about 5038 mi. This flight may include one or multiple stops.
What are the most popular routes from California to Belfast?
While some choose either San Francisco - Belfast City or Los Angeles - Belfast Intl, San Francisco - Belfast Intl is the most popular route from California to Belfast.
Can I find deals for flights from California to Belfast that include hotel bookings?
Yes. In addition to deals on California to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from California to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to Belfast.
Can I find deals for business class flights from California to Belfast?
Yes. Cheapflights offers flight deals from California to Belfast 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

Alternative routes

Complete your trip

Direct flights to Northern Ireland

Flights by cabin class

Other flight options

Popular flights

Alternative routes for California to Belfast

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Fly with Cheapflights

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

Deals for California to Belfast 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?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from California to Belfast.

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

Certainly. Search results for flights to Belfast 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 become cheaper?

Of course! You can now track prices for flights from California to Belfast and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from California to Belfast from £243

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from California to Belfast

Cheapest flights from California to BelfastExplore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from California to BelfastDiscover carefully curated flight deals from California to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Discover carefully curated flight deals from California to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from California to BelfastDiscover last-minute flight deals from California to Belfast. Data last updated 18 September 2026 and is based on user searches.

Discover last-minute flight deals from California to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from California to BelfastSearch for one-way flight options from California to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Search for one-way flight options from California to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.

Find flight deals from California to Belfast

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Cheapflights Fare Finder

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

Best time to book a flight from California to Belfast

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

Cheapflights Insights

Related info for your journey

How long is the flight from California to Belfast?

What are the most popular routes from California to Belfast?

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

How can I find direct flights from California to Belfast?

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

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

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

Complete your trip

Complete your trip to Belfast 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 by cabin class

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

California and Belfast flights

Browse other California and Belfast flight options. Last updated on 18 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 California to Belfast?

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

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

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

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Cheapest flights from California to Belfast
Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2026.

Best flights from California to Belfast
Discover carefully curated flight deals from California to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2026.

Last-minute flights from California to Belfast
Discover last-minute flight deals from California to Belfast. Data last updated 18 September 2026 and is based on user searches.

One-way flights from California to Belfast
Search for one-way flight options from California to Belfast. Find affordable one-way fares based on user searches. Data last updated 18 September 2026.