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Cheap flights from California to Belfast from £233

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
11 Jun — 18 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to Belfast

Enter your travel dates to find the best prices.

Cheapest flights from California to Belfast
Explore the most affordable flight options available from California to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 May 2026.

Mon 2/1117:30
SFO
-
BHD
1 stop14h 35m
British Airways
Fri 13/1106:45
BHD
-
SFO
1 stop16h 15m
British Airways
Deal found 11/5£634
Mon 16/1117:30
SFO
-
BHD
1 stop17h 05m
British Airways
Wed 18/1119:25
BHD
-
SFO
1 stop31h 20m
British Airways
Deal found 11/5£647
Tue 27/1020:20
LAX
-
BHD
1 stop16h 55m
American Airlines
Tue 3/1108:45
BHD
-
LAX
1 stop14h 35m
American Airlines
Deal found 8/5£653
Mon 16/1118:00
LAX
-
BHD
1 stop14h 05m
British Airways
Wed 18/1119:25
BHD
-
LAX
1 stop28h 25m
British Airways
Deal found 7/5£655
Mon 7/920:55
LAX
-
BHD
1 stop14h 30m
British Airways
Thu 17/906:30
BHD
-
LAX
1 stop19h 50m
British Airways
Deal found 11/5£655
Mon 2/1114:06
SFO
-
BHD
2 stops17h 59m
American Airlines
Fri 13/1106:45
BHD
-
SFO
2 stops19h 39m
American Airlines
Deal found 11/5£656
Tue 18/820:55
LAX
-
BHD
1 stop14h 00m
British Airways
Tue 1/909:40
BHD
-
LAX
1 stop16h 40m
British Airways
Deal found 9/5£661
Sun 6/920:55
LAX
-
BHD
1 stop27h 55m
British Airways
Fri 18/909:35
BHD
-
LAX
1 stop16h 45m
British Airways
Deal found 11/5£664
Tue 27/1010:33
LAX
-
BHD
2 stops16h 57m
British Airways
Tue 3/1111:25
BHD
-
LAX
2 stops18h 43m
British Airways
Deal found 11/5£667
Mon 17/810:21
LAX
-
BHD
2 stops18h 34m
British Airways
Wed 2/910:05
BHD
-
LAX
1 stop16h 15m
British Airways
Deal found 12/5£669
Tue 18/813:50
LAX
-
BHD
1 stop35h 30m
Delta
Wed 2/917:30
BHD
-
LAX
1 stop29h 15m
Delta
Deal found 12/5£670
Fri 27/1117:30
SFO
-
BHD
1 stop17h 45m
British Airways
Tue 1/1208:45
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 12/5£720

Find flight deals from California to Belfast

Keep the following information in mind while searching for California to Belfast flight deals. Data was last updated 12 May 2026.

Round-trip from

£634

One-way from

£233

Popular in

June

Cheapest in

October

Average price

£830
British Airways
  • British Airways
  • 2/11-13/11
  • 2 total stops
  • 30h 50m total
  • California to Belfast
Search Deals
British Airways
  • British Airways
  • 7/9
  • 2 total stops
  • 18h 14m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£124 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to Belfast 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 12 May 2026.
Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 14/9

16:35-17:30

1 stop16h 55m

Belfast City

Wed 16/9

20:35-13:50

1 stop25h 15m

£647

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/11

15:54-16:05

2 stops16h 11m

Belfast City

Fri 13/11

06:45-18:45

1 stop20h 00m

£650

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/11

09:00-10:40

2 stops17h 40m

Belfast City

Fri 13/11

06:45-18:24

2 stops19h 39m

£656

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Tue 27/10

10:33-10:30

2 stops16h 57m

Belfast City

Tue 3/11

11:25-22:08

2 stops18h 43m

£667

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Mon 17/8

11:05-16:55

2 stops21h 50m

Belfast City

Thu 3/9

17:30-14:45

1 stop29h 15m

£674
Fastest return journey

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Sat 5/9

20:55-18:15

1 stop13h 20m

Belfast City

Wed 16/9

10:05-18:20

1 stop16h 15m

£697

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Sat 19/9

16:26-18:15

2 stops17h 49m

Belfast City

Sun 11/10

20:10-13:45

1 stop25h 35m

£733

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Tue 18/8

07:30-19:50

2 stops28h 20m

Belfast Intl

Tue 1/9

20:15-15:28

2 stops27h 13m

£744

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Sun 16/8

20:10-22:50

2 stops18h 40m

Belfast Intl

Thu 3/9

15:00-17:30

1 stop34h 30m

£751

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles Los Angeles

Thu 23/7

15:32-16:55

2 stops17h 23m

Belfast City

Wed 12/8

17:30-14:45

1 stop29h 15m

£791

Flights are sorted by cheapest return flights first.

Deals found on 10/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from California to Belfast

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

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

Currently, March is the cheapest month in which you can book a flight from California to Belfast (average of £418). Flying from California to Belfast in June is currently the most expensive (average of £895). 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.

Related info for your journey

Find useful and relevant information for your journey from California to Belfast. 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 California to Belfast?

    For as low as £647, British Airways can have you in Belfast from California in 16h 55m. The distance from California to Belfast is about 5038 mi. This flight may include one or multiple stops.

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

    While some choose either Los Angeles Los Angeles - Belfast City or San Francisco - Belfast Intl, Los Angeles Los Angeles - Belfast Intl is the most popular route from California to Belfast.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from California to Belfast (average of £418). Flying from California to Belfast in June is currently the most expensive (average of £895). 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

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

Deals for California to Belfast flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from California to Belfast.

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

Certainly. Search results for flights to Belfast from California shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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