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Cheap flights from Belfast to California from £249

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
21 Feb — 28 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 22 January 2026.

Wed 18/207:00
BFS
-
SFO
1 stop18h 00m
Multiple Airlines
Wed 25/212:50
SFO
-
BFS
1 stop21h 30m
Multiple Airlines
Deal found 21/1£441
Mon 2/314:15
BFS
-
LAX
2 stops34h 20m
Multiple Airlines
Mon 9/320:10
LAX
-
BFS
2 stops18h 00m
Multiple Airlines
Deal found 20/1£464
Mon 7/906:30
BHD
-
LAX
1 stop15h 15m
British Airways
Thu 17/915:45
LAX
-
BHD
1 stop15h 45m
British Airways
Deal found 21/1£468
Wed 4/309:15
BHD
-
LAX
1 stop14h 35m
British Airways
Sun 8/320:30
LAX
-
BHD
1 stop16h 45m
British Airways
Deal found 19/1£474
Fri 4/911:00
BHD
-
LAX
1 stop17h 15m
American Airlines
Thu 17/920:55
LAX
-
BHD
1 stop13h 50m
American Airlines
Deal found 21/1£485
Sun 6/911:00
BHD
-
LAX
1 stop15h 25m
British Airways
Wed 16/915:45
LAX
-
BHD
1 stop13h 50m
British Airways
Deal found 21/1£488
Wed 11/211:25
BHD
-
ONT
2 stops41h 59m
British Airways
Sun 15/223:58
ONT
-
BHD
2 stops34h 37m
British Airways
Deal found 19/1£493
Thu 12/210:40
BHD
-
ONT
2 stops19h 49m
British Airways
Mon 16/223:58
ONT
-
BHD
2 stops48h 17m
British Airways
Deal found 20/1£501
Fri 6/219:35
BHD
-
LAX
1 stop27h 45m
British Airways
Tue 10/207:15
LAX
-
BHD
2 stops20h 15m
British Airways
Deal found 19/1£503
Fri 30/108:45
BHD
-
SNA
2 stops21h 16m
British Airways
Tue 3/212:52
SNA
-
BHD
2 stops19h 53m
British Airways
Deal found 19/1£506
Fri 13/319:35
BHD
-
SFO
1 stop27h 25m
British Airways
Mon 16/306:00
SFO
-
BHD
2 stops21h 40m
British Airways
Deal found 19/1£509
Wed 18/217:20
BHD
-
SFO
1 stop26h 30m
Delta
Wed 25/207:00
SFO
-
BHD
2 stops25h 50m
Delta
Deal found 21/1£513

Find flight deals from Belfast to California

Keep the following information in mind while searching for Belfast to California flight deals. Data was last updated 22 January 2026.

Round-trip from

£441

One-way from

£249

Popular in

December

Cheapest in

June

Average price

£473
18/2-25/2
  • 18/2-25/2
  • 2 total stops
  • 39h 30m total
  • Belfast to California
Search Deals
15/3
  • 15/3
  • 2 total stops
  • 51h 00m total
  • Belfast to California
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£77 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 22 January 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

BFS - SFO

BFSSFO

Belfast Intl

Wed 18/2

07:00-17:00

1 stop18h 00m

San Francisco

Wed 25/2

12:50-18:20

1 stop21h 30m

£441

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Mon 2/3

14:15-16:35

2 stops34h 20m

Los Angeles

Mon 9/3

20:10-21:10

2 stops18h 00m

£464

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 4/3

09:15-15:50

1 stop14h 35m

Los Angeles

Sun 8/3

20:30-20:15

1 stop16h 45m

£474

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 12/2

10:40-22:07

2 stops19h 27m

Ontario

Mon 16/2

12:18-18:35

2 stops22h 17m

£493

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 11/2

11:25-21:24

2 stops41h 59m

Ontario

Sun 15/2

23:58-18:35

2 stops34h 37m

£493

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 6/2

19:35-15:20

1 stop27h 45m

Los Angeles

Tue 10/2

07:15-11:30

2 stops20h 15m

£503

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 13/3

19:35-16:00

1 stop27h 25m

San Francisco

Mon 16/3

06:00-10:40

2 stops21h 40m

£509

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Fri 10/7

09:30-22:00

2 stops20h 30m

Santa Ana J. Wayne/Orange Cnty

Fri 24/7

16:30-18:10

2 stops17h 40m

£517

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Fri 24/4

06:30-13:50

1 stop15h 20m

San Francisco

Tue 28/4

16:35-16:25

1 stop15h 50m

£521

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Fri 20/2

06:45-18:50

1 stop20h 05m

Las Vegas Harry Reid Intl

Tue 24/2

07:00-11:30

2 stops20h 30m

£571

Flights are sorted by cheapest return flights first.

Deals found on 20/1

Showing 1-10 of 31 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 £355). Flying from Belfast to California in December is currently the most expensive (average of £503). 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 22 January 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
1,442 reviews
Check prices

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,442 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
American Airlines
7.2
Good
11,174 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,689 reviews
KLM
7.7
Good
1,442 reviews
Check prices

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Overall

7.7

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 14h 35m. Your travel time can differ by up to . The distance from Belfast to California is about 5128 mi.

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

    Most travelers choose Belfast Intl - San Francisco, Belfast Intl - Las Vegas Harry Reid Intl 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 £355). Flying from Belfast to California in December is currently the most expensive (average of £503). 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 22 January 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£368Average£524FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£472Average£523FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£505Average£611FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to California from Belfast today with Cheapflights!

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.

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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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