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Cheap flights from California to Belfast from £279

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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
19 Aug — 26 Aug1
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 20 July 2026.

Wed 2/1220:35
SFO
-
BHD
1 stop15h 40m
British Airways
Wed 9/1211:25
BHD
-
SFO
1 stop15h 20m
British Airways
Deal found 17/7£637
Sat 24/1013:30
LAX
-
BHD
2 stops17h 45m
British Airways
Sat 31/1009:15
BHD
-
LAX
2 stops19h 56m
British Airways
Deal found 19/7£641
Tue 1/1217:25
SFO
-
BHD
1 stop13h 25m
British Airways
Fri 4/1211:30
BHD
-
SFO
1 stop15h 15m
British Airways
Deal found 15/7£649
Tue 1/1217:25
SFO
-
BHD
1 stop13h 25m
British Airways
Tue 8/1210:00
BHD
-
SFO
1 stop16h 45m
British Airways
Deal found 17/7£650
Mon 17/819:30
SFO
-
BHD
1 stop17h 05m
British Airways
Tue 25/806:30
BHD
-
SFO
1 stop15h 20m
British Airways
Deal found 19/7£653
Tue 1/1214:12
SFO
-
BHD
2 stops16h 38m
British Airways
Thu 10/1207:40
BHD
-
SFO
1 stop15h 15m
British Airways
Deal found 17/7£659
Wed 28/1019:25
LAX
-
BHD
1 stop29h 05m
British Airways
Mon 2/1117:45
BHD
-
LAX
1 stop29h 35m
British Airways
Deal found 16/7£662
Mon 17/812:42
SJC
-
BHD
2 stops22h 43m
British Airways
Tue 25/806:30
BHD
-
SJC
2 stops24h 02m
British Airways
Deal found 19/7£677
Sat 24/1016:29
ONT
-
BHD
2 stops17h 16m
British Airways
Sat 31/1011:35
BHD
-
ONT
2 stops19h 17m
British Airways
Deal found 19/7£678
Wed 16/917:10
LAX
-
BHD
1 stop14h 30m
British Airways
Fri 25/906:30
BHD
-
LAX
1 stop19h 50m
British Airways
Deal found 15/7£682
Sun 13/906:00
SFO
-
BFS
3 stops31h 00m
Multiple Airlines
Fri 18/920:25
BFS
-
SFO
2 stops27h 30m
Multiple Airlines
Deal found 15/7£687
Sun 16/806:10
SJC
-
BHD
2 stops19h 10m
Delta
Tue 25/809:50
BHD
-
SJC
2 stops18h 23m
Delta
Deal found 19/7£690

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 20 July 2026.

Round-trip from

£637

One-way from

£279
British Airways
  • British Airways
  • 2/12-9/12
  • 2 total stops
  • 31h 00m total
  • California to Belfast
Search Deals
American Airlines
  • American Airlines
  • 29/10
  • 1 total stop
  • 17h 20m total
  • California to Belfast
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 20 July 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
Fastest return journey

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/12

17:25-14:50

1 stop13h 25m

Belfast City

Fri 4/12

11:30-18:45

1 stop15h 15m

£649

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/12

17:25-16:35

1 stop15h 10m

Belfast City

Thu 10/12

11:05-18:45

1 stop15h 40m

£650

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 1/12

17:25-14:50

1 stop13h 25m

Belfast City

Tue 8/12

10:00-18:35

1 stop16h 35m

£650

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Mon 11/1

15:30-16:05

1 stop16h 35m

Belfast City

Thu 14/1

11:05-18:35

1 stop15h 30m

£664

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 16/8

16:35-17:40

1 stop17h 05m

Belfast City

Wed 26/8

06:30-13:50

1 stop15h 20m

£667

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 17/8

16:31-18:45

2 stops18h 14m

Belfast City

Tue 25/8

19:30-13:50

1 stop26h 20m

£670

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/12

15:00-16:50

2 stops17h 50m

Belfast City

Thu 10/12

09:40-22:39

2 stops20h 59m

£673

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Mon 17/8

12:42-19:25

2 stops22h 43m

Belfast City

Tue 25/8

06:30-22:32

2 stops24h 02m

£677

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Sat 24/10

16:29-17:45

2 stops17h 16m

Belfast City

Sat 31/10

11:35-23:52

2 stops19h 17m

£678

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 16/9

17:10-15:40

1 stop14h 30m

Belfast City

Fri 25/9

06:30-18:20

1 stop19h 50m

£682

Flights are sorted by cheapest return flights first.

Deals found on 20/7

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

No data available for this route at this time. Please check back soon.

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 £649, British Airways can have you in Belfast from California in 13h 25m. 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 Intl or San Francisco - Belfast City, San Francisco - 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.

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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