Find flights
When to book
FAQs

Cheap flights from California to Belfast from £238

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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
22 May — 29 May1
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 22 April 2026.

Tue 1/920:05
SJC
-
BHD
2 stops36h 50m
Virgin Atlantic
Thu 10/909:50
BHD
-
SJC
2 stops44h 19m
Virgin Atlantic
Deal found 17/4£631
Sun 6/1220:40
SFO
-
BHD
1 stop14h 00m
British Airways
Thu 10/1209:05
BHD
-
SFO
1 stop17h 40m
British Airways
Deal found 21/4£648
Tue 13/1019:30
SFO
-
BHD
1 stop14h 05m
British Airways
Tue 27/1008:45
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 18/4£648
Wed 9/916:35
SFO
-
BHD
1 stop19h 15m
British Airways
Wed 23/910:05
BHD
-
SFO
1 stop15h 25m
British Airways
Deal found 17/4£651
Wed 7/1016:35
SFO
-
BHD
1 stop15h 05m
British Airways
Fri 23/1012:00
BHD
-
SFO
1 stop13h 40m
British Airways
Deal found 18/4£656
Mon 16/1121:00
LAX
-
BHD
1 stop15h 15m
British Airways
Thu 19/1106:35
BHD
-
LAX
1 stop19h 55m
British Airways
Deal found 21/4£656
Sun 18/1021:00
LAX
-
BHD
1 stop15h 35m
British Airways
Wed 21/1011:35
BHD
-
LAX
1 stop14h 50m
British Airways
Deal found 19/4£657
Wed 9/913:29
SFO
-
BHD
2 stops18h 11m
American Airlines
Wed 23/910:05
BHD
-
SFO
2 stops21h 09m
American Airlines
Deal found 17/4£658
Mon 1/616:30
LAX
-
BFS
1 stop15h 00m
Multiple Airlines
Mon 8/606:10
BFS
-
LAX
2 stops43h 52m
Multiple Airlines
Deal found 17/4£669
Mon 7/917:10
LAX
-
BHD
1 stop14h 20m
British Airways
Mon 14/919:35
BHD
-
LAX
1 stop30h 45m
British Airways
Deal found 21/4£670
Mon 7/907:45
LAX
-
BHD
2 stops17h 35m
Delta
Mon 14/917:30
BHD
-
LAX
1 stop26h 20m
Delta
Deal found 21/4£674
Wed 9/920:55
LAX
-
BHD
1 stop14h 55m
British Airways
Tue 15/920:25
BHD
-
LAX
2 stops29h 42m
British Airways
Deal found 19/4£675

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 22 April 2026.

Round-trip from

£631

One-way from

£238

Popular in

June

Cheapest in

October
Virgin Atlantic
  • Virgin Atlantic
  • 1/9-10/9
  • 4 total stops
  • 81h 09m total
  • California to Belfast
Search Deals
British Airways
  • British Airways
  • 5/8
  • 2 total stops
  • 18h 02m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£127 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
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 22 April 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 JoseBelfast

SJC - BHD

SJCBHD

San Jose

Tue 1/9

20:05-16:55

2 stops36h 50m

Belfast City

Thu 10/9

09:50-22:09

2 stops44h 19m

£631

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 12/10

16:35-15:30

1 stop14h 55m

Belfast City

Wed 28/10

12:25-19:45

1 stop14h 20m

£648

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

16:35-19:50

1 stop19h 15m

Belfast City

Wed 23/9

10:05-17:30

1 stop15h 25m

£651

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 18/10

15:45-14:35

1 stop14h 50m

Belfast City

Wed 21/10

11:35-18:25

1 stop14h 50m

£657

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 9/9

13:29-15:40

2 stops18h 11m

Belfast City

Wed 23/9

10:05-23:14

2 stops21h 09m

£658

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 1/6

16:30-15:30

1 stop15h 00m

Belfast Intl

Mon 8/6

06:10-18:02

2 stops43h 52m

£669

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 15/10

16:35-15:30

1 stop14h 55m

Belfast City

Wed 28/10

12:25-19:45

1 stop14h 20m

£685

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 10/9

19:30-19:25

1 stop15h 55m

Belfast City

Mon 14/9

11:35-13:50

1 stop34h 15m

£690
Fastest return journey

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sat 17/10

21:00-18:15

1 stop13h 15m

Belfast City

Tue 20/10

12:40-18:25

1 stop13h 45m

£694

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 1/6

16:30-15:30

1 stop15h 00m

Belfast Intl

Tue 16/6

15:00-18:10

2 stops59h 10m

£697

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 £419). Flying from California to Belfast in June is currently the most expensive (average of £898). 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, Virgin Atlantic can have you in Belfast from California in 14h 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 - Belfast City or Santa Ana J. Wayne/Orange Cnty - Belfast Intl, 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 £419). Flying from California to Belfast in June is currently the most expensive (average of £898). 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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.