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Cheap flights from Belfast to California from £279

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
7 feb — 14 feb1
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 8 gennaio 2026.

Round-trip from

£397

One-way from

£279

Popular in

December

Cheapest in

June

Average price

£471
British Airways
  • British Airways
  • 1/2-8/2
  • 2 total stops
  • 30h 30m total
  • Belfast to California
Search Deals
31/5
  • 31/5
  • 1 total stop
  • 22h 00m total
  • Belfast to California
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 8 gennaio 2026.

dom 1/206:30BHD - SFO
1 stop16h 30mBritish Airways
dom 8/220:40SFO - BHD
1 stop14h 00mBritish Airways
Deal found 7/1£397
mer 4/309:15BHD - LAX
1 stop17h 15mBritish Airways
dom 8/318:40LAX - BHD
1 stop17h 00mBritish Airways
Deal found 5/1£474
gio 5/210:40BHD - LAX
1 stop15h 50mBritish Airways
lun 9/215:30LAX - BHD
1 stop16h 35mBritish Airways
Deal found 6/1£476
mer 11/206:35BHD - ONT
2 stops39h 14mBritish Airways
dom 15/206:00ONT - BHD
2 stops26h 50mBritish Airways
Deal found 5/1£478
ven 6/219:35BHD - LAX
1 stop28h 15mBritish Airways
mar 10/221:00LAX - BHD
1 stop28h 10mBritish Airways
Deal found 7/1£481
ven 30/106:45BHD - SNA
2 stops23h 16mBritish Airways
mar 3/216:23SNA - BHD
2 stops16h 22mBritish Airways
Deal found 5/1£492
mer 11/309:15BHD - ONT
2 stops21h 44mAmerican Airlines
mer 25/310:56ONT - BHD
2 stops16h 19mAmerican Airlines
Deal found 5/1£493
mer 11/314:15BFS - SFO
2 stops34h 15mMultiple Airlines
mer 25/320:25SFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 5/1£504
gio 19/214:25BFS - SFO
2 stops34h 05mMultiple Airlines
gio 26/219:25SFO - BFS
2 stops18h 55mMultiple Airlines
Deal found 5/1£506
ven 13/319:35BHD - SFO
1 stop27h 25mBritish Airways
lun 16/314:33SFO - BHD
2 stops18h 32mBritish Airways
Deal found 5/1£509
ven 23/114:50BHD - SFO
1 stop32h 10mBritish Airways
mar 27/123:13SFO - BHD
2 stops27h 02mBritish Airways
Deal found 5/1£515
mer 25/312:25BHD - SFO
2 stops31h 44mAmerican Airlines
sab 18/421:35SFO - BHD
2 stops27h 30mAmerican Airlines
Deal found 7/1£517

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 8 gennaio 2026.
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

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

dom 1/2

06:30-15:00

1 stop16h 30m

San Francisco

dom 8/2

20:40-18:40

1 stop14h 00m

£397

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

ven 6/2

19:35-15:50

1 stop28h 15m

Los Angeles

mar 10/2

10:25-11:30

2 stops17h 05m

£474

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

mer 4/3

06:35-13:30

1 stop14h 55m

Los Angeles

dom 8/3

06:19-10:20

2 stops21h 01m

£474

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

gio 5/2

09:05-15:50

1 stop14h 45m

Los Angeles

lun 9/2

18:00-16:05

1 stop14h 05m

£474

BelfastOntario

BHD - ONT

BHDONT

Belfast City

gio 12/2

11:05-22:29

2 stops19h 24m

Ontario

lun 16/2

14:39-16:05

2 stops17h 26m

£478

BelfastOntario

BHD - ONT

BHDONT

Belfast City

mer 11/2

19:25-23:59

2 stops36h 34m

Ontario

dom 15/2

23:58-16:05

2 stops32h 07m

£478

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

ven 30/1

06:45-22:01

2 stops23h 16m

Santa Ana J. Wayne/Orange Cnty

mar 3/2

16:23-16:45

2 stops16h 22m

£492

BelfastOntario

BHD - ONT

BHDONT

Belfast City

mer 11/3

09:15-23:59

2 stops21h 44m

Ontario

mer 25/3

10:56-10:15

2 stops16h 19m

£493

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

mer 11/3

14:15-17:30

2 stops34h 15m

San Francisco

mer 25/3

20:25-22:20

2 stops18h 55m

£504

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

gio 19/2

14:25-16:30

2 stops34h 05m

San Francisco

gio 26/2

19:25-22:20

2 stops18h 55m

£506

Flights are sorted by cheapest return flights first.

Deals found on 7/1

Showing 1-10 of 46 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 £354). Flying from Belfast to California in December is currently the most expensive (average of £500). 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.

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 8 gennaio 2026.
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
1,434 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
American Airlines
7.2
Good
11,094 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,657 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Entertainment

7.1

Overall

7.7

Comfort

7.6

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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?

    British Airways can get you from Belfast to California in just under 16h 30m. Your travel time can differ by up to . The distance from Belfast to California is about 5038 mi.

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

    Most travelers choose Belfast Intl - Los Angeles, Belfast City - San Francisco or Belfast City - 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 £354). Flying from Belfast to California in December is currently the most expensive (average of £500). 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 8 gennaio 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£366Average£543FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£470Average£521FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£503Average£609FlexibilityNo 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?

Cheapflights helps you find that perfect flight to California from Belfast by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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

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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