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Cheap flights from Belfast to California from £329

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LAX
21 May — 28 May1
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 21 April 2026.

Tue 14/716:25
BHD
-
LAX
2 stops35h 16m
Finnair
Tue 21/717:05
LAX
-
BHD
1 stop16h 30m
Finnair
Deal found 18/4£648
Tue 1/916:25
BHD
-
SFO
1 stop29h 25m
American Airlines
Thu 24/919:30
SFO
-
BHD
1 stop15h 15m
American Airlines
Deal found 20/4£660
Thu 3/909:35
BHD
-
SFO
1 stop16h 05m
British Airways
Thu 24/916:35
SFO
-
BHD
1 stop14h 55m
British Airways
Deal found 17/4£661
Wed 2/906:30
BHD
-
SFO
1 stop19h 00m
American Airlines
Thu 24/911:30
SFO
-
BHD
2 stops20h 00m
American Airlines
Deal found 17/4£661
Wed 23/910:05
BHD
-
LAX
1 stop18h 10m
British Airways
Sun 27/923:50
LAX
-
BHD
2 stops29h 05m
British Airways
Deal found 16/4£665
Wed 3/607:00
BFS
-
SFO
3 stops41h 35m
Multiple Airlines
Wed 10/606:00
SFO
-
BFS
2 stops29h 15m
Multiple Airlines
Deal found 19/4£670
Tue 28/706:30
BHD
-
SFO
1 stop15h 20m
British Airways
Wed 19/816:35
SFO
-
BHD
1 stop15h 05m
British Airways
Deal found 17/4£674
Mon 31/811:35
BHD
-
SFO
1 stop34h 15m
American Airlines
Wed 23/916:35
SFO
-
BHD
1 stop15h 05m
American Airlines
Deal found 20/4£675
Thu 20/806:30
BHD
-
LAX
1 stop19h 50m
British Airways
Mon 31/811:20
LAX
-
BHD
2 stops17h 35m
British Airways
Deal found 20/4£679
Tue 2/606:40
BFS
-
SFO
3 stops39h 55m
Multiple Airlines
Tue 9/606:00
SFO
-
BFS
3 stops29h 40m
Multiple Airlines
Deal found 18/4£680
Tue 1/916:25
BHD
-
SFO
1 stop29h 25m
American Airlines
Sun 27/919:30
SFO
-
BHD
1 stop17h 05m
American Airlines
Deal found 20/4£689
Thu 26/1106:35
BHD
-
LAX
1 stop16h 45m
British Airways
Mon 30/1117:30
LAX
-
BHD
1 stop14h 35m
British Airways
Deal found 19/4£694

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 21 April 2026.

Round-trip from

£648

One-way from

£329

Popular in

December

Cheapest in

June

Average price

£748
Finnair
  • Finnair
  • 14/7-21/7
  • 3 total stops
  • 51h 46m total
  • Belfast to California
Search Deals
3/5
  • 3/5
  • 3 total stops
  • 57h 50m total
  • Belfast to California
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 21 April 2026.
Use the filters below to find and compare flights from Belfast to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 23/9

10:05-22:59

2 stops20h 54m

Los Angeles Los Angeles

Sun 27/9

23:50-12:55

2 stops29h 05m

£669

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 14/7

16:25-11:30

1 stop27h 05m

Los Angeles Los Angeles

Tue 21/7

20:55-18:55

1 stop14h 00m

£672

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 2/6

06:40-14:35

3 stops39h 55m

San Francisco

Tue 9/6

06:00-19:40

3 stops29h 40m

£680

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 3/6

07:30-16:35

3 stops41h 05m

San Francisco

Wed 10/6

06:00-19:15

2 stops29h 15m

£694

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Thu 24/9

06:30-21:51

2 stops23h 21m

Santa Ana J. Wayne/Orange Cnty

Mon 28/9

10:35-19:25

2 stops24h 50m

£699

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 3/9

06:30-20:15

1 stop21h 45m

Los Angeles Los Angeles

Mon 7/9

15:50-17:30

1 stop17h 40m

£705

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 20/8

20:35-11:30

1 stop22h 55m

Los Angeles Los Angeles

Mon 31/8

16:20-15:30

1 stop15h 10m

£711

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/9

10:05-20:15

1 stop18h 10m

Los Angeles Los Angeles

Sun 6/9

20:55-20:35

1 stop15h 40m

£721

BelfastLas Vegas

BFS - LAS

BFSLAS

Belfast Intl

Wed 3/6

06:10-15:04

3 stops40h 54m

Las Vegas Harry Reid Intl

Wed 10/6

06:45-19:15

3 stops28h 30m

£723

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 2/9

06:30-13:50

1 stop15h 20m

San Francisco

Fri 25/9

16:35-18:10

1 stop17h 35m

£724

Flights are sorted by cheapest return flights first.

Deals found on 16/4

Showing 1-10 of 55 resultsSorted by cheapest first
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6

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 £353). Flying from Belfast to California in December is currently the most expensive (average of £488). 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.

How much does it cost for a return flight from Belfast to California?

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 21 April 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
7.8
Good
1,501 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,501 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
American Airlines
7.1
Good
11,634 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,896 reviews
KLM
7.8
Good
1,501 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Overall

7.8

Comfort

7.7

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 and Finnair can get you from Belfast to California in just under 20h 54m. Your travel time can differ by up to 6h 11m. 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 - San Francisco, Belfast City - San Francisco or Belfast Intl - Los Angeles 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 £353). Flying from Belfast to California in December is currently the most expensive (average of £488). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 21 April 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£384Average£556FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£469Average£520FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
KLMCheapest£502Average£608FlexibilityNo 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.

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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