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Cheap flights from Belfast to California from £379

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to California

Keep the following information in mind while searching for Belfast to California flight deals. Data was last updated 7 November 2025.

Round-trip from

£575

One-way from

£379

Popular in

February

Cheapest in

January
American Airlines
  • American Airlines
  • 9/3-11/3
  • 4 total stops
  • 42h 26m total
  • Belfast to California
Search Deals
Finnair
  • Finnair
  • 21/1
  • 1 total stop
  • 17h 00m total
  • Belfast to California
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals

Find flight deals from Belfast to California

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to California
Explore the most affordable flight options available from Belfast to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Fri 21/1106:30BFS - LAX
1 stop21h 55mMultiple Airlines
Tue 25/1118:00LAX - BFS
1 stop18h 10mMultiple Airlines
Deal found 5/11£622
Fri 21/1106:45BHD - LAX
1 stop19h 40mBritish Airways
Tue 25/1117:45LAX - BHD
1 stop15h 00mBritish Airways
Deal found 5/11£628
Fri 21/1119:35BHD - ONT
2 stops31h 30mBritish Airways
Tue 25/1110:47ONT - BHD
2 stops16h 43mBritish Airways
Deal found 5/11£630
Fri 21/1114:50BHD - LAX
1 stop32h 30mAmerican Airlines
Tue 25/1119:30LAX - BHD
1 stop15h 10mAmerican Airlines
Deal found 5/11£632
Fri 21/1117:20BHD - LAX
1 stop26h 25mVirgin Atlantic
Tue 25/1111:40LAX - BHD
2 stops21h 10mVirgin Atlantic
Deal found 5/11£701
Fri 21/1106:30BHD - SNA
2 stops19h 35mDelta
Tue 25/1112:45SNA - BHD
2 stops20h 05mDelta
Deal found 5/11£743
Sat 20/1212:45BFS - SFO
3 stops33h 50mMultiple Airlines
Sat 27/1216:40SFO - BFS
2 stops22h 00mMultiple Airlines
Deal found 5/11£863
Fri 21/1120:05BHD - LAX
2 stops26h 55mMultiple Airlines
Tue 25/1105:35LAX - BHD
3 stops24h 00mMultiple Airlines
Deal found 5/11£953
Sun 21/1206:30BFS - LAS
2 stops22h 09mMultiple Airlines
Sun 28/1209:10LAS - BFS
2 stops21h 00mMultiple Airlines
Deal found 6/11£1,111
Mon 17/1111:30BHD - SFO
2 stops20h 29mMultiple Airlines
Fri 21/1117:59SFO - BHD
2 stops36h 16mMultiple Airlines
Deal found 7/11£2,196
Mon 17/1117:20BHD - SFO
1 stop26h 30mVirgin Atlantic
Fri 21/1113:55SFO - BHD
1 stop18h 55mVirgin Atlantic
Deal found 7/11£4,579

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to California that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from Belfast to California that are best for you.

Fly from

Belfast

Fly to

California

Route

Depart

Return

Price

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Mon 9/3

06:35-22:09

2 stops22h 34m

Santa Ana J. Wayne/Orange Cnty

Wed 11/3

13:43-16:35

2 stops19h 52m

£575

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

11:05-18:45

1 stop15h 40m

San Francisco

Mon 9/3

13:33-14:15

2 stops17h 42m

£600

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 5/3

09:05-22:08

2 stops21h 03m

Ontario

Mon 9/3

10:57-14:15

2 stops20h 18m

£605

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

11:05-22:25

2 stops19h 20m

San Francisco

Mon 9/3

13:33-14:15

2 stops17h 42m

£608

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

Tue 3/3

06:00-18:50

1 stop20h 50m

Las Vegas Harry Reid Intl

Sun 8/3

06:56-20:30

2 stops30h 34m

£613

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Fri 21/11

06:30-20:25

1 stop21h 55m

Los Angeles

Tue 25/11

18:00-20:10

1 stop18h 10m

£622

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 21/11

06:45-18:25

1 stop19h 40m

Los Angeles

Tue 25/11

17:45-16:45

1 stop15h 00m

£628

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Fri 21/11

19:35-19:05

2 stops31h 30m

Ontario

Tue 25/11

10:47-11:30

2 stops16h 43m

£630

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Tue 3/3

11:25-18:50

1 stop15h 25m

Las Vegas Harry Reid Intl

Sun 8/3

07:12-20:15

2 stops30h 03m

£662

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Tue 3/3

08:45-22:37

2 stops21h 52m

Las Vegas Harry Reid Intl

Sun 8/3

07:12-18:40

2 stops28h 28m

£664

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 25 results
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Best time to book a flight from Belfast to California

Have a flexible travel schedule? Discover the best time to fly to California 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 California

What is the cheapest month to book a flight from Belfast to California?

Currently, November is the cheapest month in which you can book a flight from Belfast to California (average of £364). Flying from Belfast to California in December is currently the most expensive (average of £518). 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 CA?

Find hourly flight availability from Belfast to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.

When flying from Belfast to California, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 12% versus a flight in the afternoon.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated 7 November 2025.
Check out reviews from past customers who have flown with KLM, American Airlines, andBritish Airways from Belfast to California to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,408 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.7

Boarding

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,408 reviews
KLM
7.7
Good
1,408 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.7

Boarding

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
American Airlines
7.2
Good
11,044 reviews
KLM
7.7
Good
1,408 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.7

Boarding

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,501 reviews
KLM
7.7
Good
1,408 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.7

Boarding

7.8

Entertainment

7.1

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Belfast to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Belfast to California?

    American Airlines, British Airways, and Virgin Atlantic can get you from Belfast to California in just under 19h 40m. Your travel time can differ by up to 6h 45m. The distance from Belfast to California is about 5128 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Belfast to California?

    Most travelers choose Belfast Intl - Los Angeles, Belfast City - Ontario or Belfast Intl - Las Vegas Harry Reid Intl when deciding on the best route from Belfast to California.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast to California 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 California?

    Currently, November is the cheapest month in which you can book a flight from Belfast to California (average of £364). Flying from Belfast to California in December is currently the most expensive (average of £518). 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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Top 3 airlines flying from Belfast to California

Discover the top 3 airlines that operate flights from Belfast to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£377Average£595FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£484Average£536FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£518Average£627FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

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

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Yes! Cheapflights helps users easily find flights from Belfast to California with no change fees.

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Of course! You can now track prices for flights from Belfast to California 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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