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Cheap flights from Belfast to California from £391

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
24 Dec — 31 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 24 November 2025.

Round-trip from

£577

One-way from

£391

Popular in

February

Cheapest in

June
American Airlines
  • American Airlines
  • 9/3-11/3
  • 4 total stops
  • 42h 26m total
  • Belfast to California
Search Deals
28/4
  • 28/4
  • 1 total stop
  • 25h 15m total
  • Belfast to California
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 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 24 November 2025.

Wed 10/1211:25BHD - LAS
1 stop15h 25mAmerican Airlines
Mon 15/1210:31LAS - BHD
2 stops19h 44mAmerican Airlines
Deal found 21/11£751
Wed 10/1206:35BHD - LAS
2 stops18h 46mAmerican Airlines
Sun 14/1223:54LAS - BHD
2 stops30h 21mAmerican Airlines
Deal found 21/11£756
Thu 11/1210:40BHD - LAS
2 stops20h 12mAmerican Airlines
Mon 15/1210:31LAS - BHD
2 stops19h 44mAmerican Airlines
Deal found 21/11£785
Thu 11/1210:40BHD - LAS
1 stop16h 10mBritish Airways
Mon 15/1210:31LAS - BHD
2 stops21h 34mBritish Airways
Deal found 21/11£790
Wed 10/1212:25BHD - LAS
1 stop14h 25mBritish Airways
Mon 15/1220:55LAS - BHD
1 stop15h 20mBritish Airways
Deal found 21/11£845
Sun 23/1105:45BFS - SFO
3 stops40h 50mMultiple Airlines
Thu 27/1108:25SFO - BFS
3 stops29h 35mMultiple Airlines
Deal found 22/11£846
Thu 11/1211:05BHD - LAS
2 stops19h 47mAmerican Airlines
Sun 14/1206:11LAS - BHD
2 stops20h 09mAmerican Airlines
Deal found 21/11£872
Sun 23/1106:50BHD - SFO
2 stops21h 20mMultiple Airlines
Thu 27/1116:30SFO - BHD
1 stop20h 00mMultiple Airlines
Deal found 22/11£951
Sun 21/1216:45BFS - SFO
2 stops29h 50mMultiple Airlines
Wed 31/1219:25SFO - BFS
2 stops18h 45mMultiple Airlines
Deal found 22/11£964
Sun 21/1217:20BHD - SFO
1 stop26h 30mVirgin Atlantic
Wed 31/1213:55SFO - BHD
1 stop18h 55mVirgin Atlantic
Deal found 22/11£980
Sun 21/1217:20BHD - SFO
1 stop26h 30mKLM
Wed 31/1214:05SFO - BHD
2 stops22h 55mKLM
Deal found 22/11£1,009
Thu 11/1206:30BHD - LAS
1 stop15h 45mMultiple Airlines
Sun 14/1221:05LAS - BHD
1 stop26h 35mMultiple Airlines
Deal found 21/11£1,011

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 24 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

£577

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 15/1

06:35-18:45

1 stop20h 10m

San Francisco

Mon 19/1

09:00-14:15

2 stops21h 15m

£601

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 4/2

06:35-18:30

1 stop19h 55m

Los Angeles

Sun 8/2

10:50-13:55

2 stops19h 05m

£602

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 22/1

11:05-22:48

2 stops19h 43m

Ontario

Mon 26/1

10:58-14:15

2 stops19h 17m

£606

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 30/1

11:30-21:27

2 stops17h 57m

Santa Ana J. Wayne/Orange Cnty

Tue 3/2

08:05-11:30

2 stops19h 25m

£606

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 15/1

06:35-18:45

1 stop20h 10m

San Francisco

Mon 19/1

20:40-20:15

1 stop15h 35m

£665

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 4/2

06:35-18:50

1 stop20h 15m

Las Vegas Harry Reid Intl

Sun 8/2

22:59-14:15

2 stops31h 16m

£731

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 14/1

11:25-22:34

2 stops19h 09m

Las Vegas Harry Reid Intl

Sun 18/1

11:57-10:40

2 stops38h 43m

£731

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 10/12

11:25-18:50

1 stop15h 25m

Las Vegas Harry Reid Intl

Mon 15/12

10:31-14:15

2 stops19h 44m

£751

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Wed 10/12

11:25-18:50

1 stop15h 25m

Las Vegas Harry Reid Intl

Sun 14/12

23:54-14:15

2 stops30h 21m

£756

Flights are sorted by cheapest return flights first.

Deals found on 22/11

Showing 1-10 of 19 results
1
2

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 £517). 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 24 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 24 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
1,420 reviews
Check prices

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

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
1,420 reviews
KLM
7.7
Good
1,420 reviews
Check prices

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

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
11,040 reviews
KLM
7.7
Good
1,420 reviews
Check prices

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

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
7,535 reviews
KLM
7.7
Good
1,420 reviews
Check prices

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Crew

8.4

Comfort

7.6

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 can get you from Belfast to California in just under 22h 34m. Your travel time can differ by up to . The distance from Belfast to California is about 5126 mi.

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

    Most travelers choose Belfast Intl - San Francisco, Belfast City - San Francisco or Belfast Intl - Los Angeles 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 £517). 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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Alternative routes for Belfast to California

See prices for flight routes from nearby airports that may be better suited for you.
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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 24 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£377Average£594FlexibilityNo 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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Yes! Cheapflights helps users easily find flights from Belfast to California with no change fees.

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