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Cheap flights from California to Belfast from £237

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
1 Jun — 8 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 2 May 2026.

Mon 2/1120:40
SFO
-
BHD
1 stop13h 55m
British Airways
Fri 13/1108:45
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 30/4£631
Sun 6/1217:30
SFO
-
BHD
1 stop17h 10m
British Airways
Thu 10/1206:35
BHD
-
SFO
1 stop20h 10m
British Airways
Deal found 27/4£643
Wed 16/920:55
LAX
-
BHD
1 stop13h 50m
British Airways
Fri 9/1006:30
BHD
-
LAX
1 stop16h 25m
British Airways
Deal found 30/4£648
Mon 2/1109:00
SFO
-
BHD
2 stops17h 40m
American Airlines
Fri 13/1106:45
BHD
-
SFO
2 stops19h 39m
American Airlines
Deal found 30/4£652
Mon 16/1115:30
LAX
-
BHD
1 stop14h 45m
British Airways
Thu 19/1111:05
BHD
-
LAX
1 stop15h 25m
British Airways
Deal found 27/4£652
Mon 21/913:35
LAX
-
BHD
2 stops19h 20m
Delta
Wed 14/1017:30
BHD
-
LAX
1 stop26h 20m
Delta
Deal found 30/4£662
Tue 24/1117:30
SFO
-
BHD
1 stop17h 10m
British Airways
Mon 30/1119:25
BHD
-
SFO
1 stop27h 35m
British Airways
Deal found 30/4£675
Thu 17/920:55
LAX
-
BHD
1 stop14h 30m
British Airways
Thu 8/1009:35
BHD
-
LAX
1 stop16h 50m
British Airways
Deal found 30/4£685
Tue 24/1112:45
SJC
-
BHD
2 stops20h 05m
KLM
Mon 30/1117:20
BHD
-
SJC
2 stops30h 55m
KLM
Deal found 30/4£687
Sat 5/916:20
LAX
-
BHD
1 stop14h 45m
American Airlines
Wed 16/911:35
BHD
-
LAX
1 stop16h 40m
American Airlines
Deal found 30/4£687
Sat 5/917:55
LAX
-
BHD
2 stops36h 40m
British Airways
Wed 16/911:35
BHD
-
LAX
1 stop14h 45m
British Airways
Deal found 30/4£691
Mon 4/507:30
LAX
-
BFS
3 stops31h 35m
Multiple Airlines
Tue 19/506:15
BFS
-
LAX
3 stops45h 05m
Multiple Airlines
Deal found 29/4£715

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 2 May 2026.

Round-trip from

£648

One-way from

£237

Popular in

June

Cheapest in

October

Average price

£826
British Airways
  • British Airways
  • 20/9-13/10
  • 2 total stops
  • 30h 35m total
  • California to Belfast
Search Deals
British Airways
  • British Airways
  • 16/9
  • 2 total stops
  • 16h 35m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£126 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 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 2 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

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 16/9

20:55-19:50

1 stop14h 55m

Belfast City

Thu 8/10

09:35-18:25

1 stop16h 50m

£648

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Mon 21/9

13:35-16:55

2 stops19h 20m

Belfast City

Mon 12/10

17:30-11:50

1 stop26h 20m

£662

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 5/9

16:20-18:15

1 stop17h 55m

Belfast City

Wed 16/9

10:05-20:15

1 stop18h 10m

£687

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 5/9

20:48-14:35

2 stops33h 47m

Belfast City

Wed 16/9

19:40-13:50

1 stop26h 10m

£691

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 20/9

13:50-09:20

1 stop35h 30m

Belfast City

Sat 10/10

17:30-14:45

1 stop29h 15m

£699

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 20/8

16:43-19:25

2 stops18h 42m

Belfast City

Mon 7/9

19:35-13:50

1 stop26h 15m

£701

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 17/8

16:30-22:25

2 stops21h 55m

Belfast Intl

Mon 7/9

06:10-14:30

2 stops40h 20m

£729

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 19/9

11:40-12:25

2 stops16h 45m

Belfast City

Sun 11/10

11:00-18:25

1 stop15h 25m

£731

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 19/9

09:15-16:55

2 stops23h 40m

Belfast City

Sun 11/10

09:45-22:52

2 stops21h 07m

£750
Fastest return journey

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 17/9

20:55-18:45

1 stop13h 50m

Belfast City

Sat 10/10

07:05-13:45

1 stop14h 40m

£779

Flights are sorted by cheapest return flights first.

Deals found on 28/4

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 £416). Flying from California to Belfast in June is currently the most expensive (average of £892). 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 £648, British Airways can have you in Belfast from California in 13h 50m. The distance from California to Belfast is about 5128 mi. This flight may include one or multiple stops.

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

    While some choose either San Francisco - Belfast Intl or San Francisco - Belfast City, Los Angeles - Belfast City 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 £416). Flying from California to Belfast in June is currently the most expensive (average of £892). 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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