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Cheap flights from California to Belfast from £247

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
25 Dec — 1 Jan1
1 adult
1 adult, Economy, 0 bags

Find 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 25 November 2025.

Fri 5/1207:15SJC - BHD
2 stops25h 35mDelta
Tue 9/1206:30BHD - SJC
2 stops23h 42mDelta
Deal found 23/11£531
Sat 6/1213:55SFO - BHD
1 stop18h 55mMultiple Airlines
Fri 12/1217:20BHD - SFO
1 stop26h 30mMultiple Airlines
Deal found 24/11£542
Sat 6/1214:00SFO - BHD
2 stops18h 50mKLM
Fri 12/1217:20BHD - SFO
1 stop26h 30mKLM
Deal found 24/11£546
Sat 29/1109:40SJC - BHD
2 stops23h 10mKLM
Sat 6/1206:30BHD - SJC
2 stops22h 06mKLM
Deal found 22/11£553
Sat 29/1117:30SFO - BHD
1 stop30h 55mBritish Airways
Sat 6/1215:05BHD - SFO
1 stop31h 55mBritish Airways
Deal found 22/11£660
Sat 6/1220:40SFO - BHD
1 stop27h 45mBritish Airways
Fri 12/1219:35BHD - SFO
2 stops31h 49mBritish Airways
Deal found 23/11£711
Mon 24/1121:00LAX - BHD
1 stop15h 15mBritish Airways
Sat 6/1206:35BHD - LAX
1 stop21h 50mBritish Airways
Deal found 24/11£722
Mon 24/1120:15LAX - BHD
2 stops29h 00mAer Lingus
Sat 6/1206:50BHD - LAX
2 stops19h 40mAer Lingus
Deal found 22/11£730
Sun 30/1120:15LAX - BHD
2 stops16h 35mAer Lingus
Sun 14/1218:50BHD - LAX
2 stops31h 40mAer Lingus
Deal found 24/11£732
Mon 24/1109:20LAX - BHD
2 stops17h 20mAmerican Airlines
Sat 6/1206:35BHD - LAX
1 stop16h 45mAmerican Airlines
Deal found 24/11£740
Sun 23/1123:10LAX - BHD
2 stops24h 30mBritish Airways
Sun 7/1212:10BHD - LAX
2 stops19h 17mBritish Airways
Deal found 23/11£743
Sun 30/1121:00LAX - BHD
1 stop15h 15mBritish Airways
Sun 14/1212:10BHD - LAX
2 stops19h 17mBritish Airways
Deal found 24/11£756

Cheap flight deals from California to Belfast

Keep the following information in mind while searching for California to Belfast flight deals. Data was last updated 25 November 2025.

Round-trip from

£457

One-way from

£247

Popular in

June

Cheapest in

October

Average price

£683
British Airways
  • British Airways
  • 23/1-3/2
  • 2 total stops
  • 32h 30m total
  • California to Belfast
Search Deals
12/12
  • 12/12
  • 3 total stops
  • 40h 38m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£116 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 25 November 2025.
Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

California

Fly to

Belfast

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 23/1

21:00-19:15

1 stop14h 15m

Belfast City

Tue 3/2

06:35-18:30

1 stop19h 55m

£457

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 12/2

18:00-16:40

1 stop14h 40m

Belfast City

Mon 16/2

19:25-13:30

1 stop26h 05m

£460

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 28/1

21:00-20:15

1 stop15h 15m

Belfast City

Sun 1/2

17:35-18:30

1 stop32h 55m

£473

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 12/2

14:47-16:40

2 stops17h 53m

Belfast City

Mon 16/2

11:30-23:58

2 stops20h 28m

£477

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 3/3

13:50-14:50

2 stops17h 00m

Belfast City

Tue 10/3

06:35-19:45

1 stop20h 10m

£483

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 1/3

21:00-20:15

1 stop15h 15m

Belfast City

Mon 9/3

19:25-14:30

1 stop26h 05m

£497

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 28/1

06:00-16:50

2 stops26h 50m

Belfast City

Sun 1/2

17:20-23:58

2 stops38h 38m

£500

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

Wed 28/1

11:55-16:50

2 stops20h 55m

Belfast City

Sun 1/2

17:20-22:15

2 stops36h 55m

£500

Santa AnaBelfast

SNA - BHD

SNABHD

Santa Ana J. Wayne/Orange Cnty

Wed 28/1

07:30-16:50

2 stops25h 20m

Belfast City

Sun 1/2

17:20-16:34

2 stops31h 14m

£500

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 28/1

09:05-16:50

2 stops23h 45m

Belfast City

Sun 1/2

17:20-16:20

2 stops31h 00m

£501

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Showing 1-10 of 49 results
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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 £447). Flying from California to Belfast in June is currently the most expensive (average of £708). 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.

What is the cheapest time of day to fly from CA to BFS?

Find hourly flight availability from California to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 November 2025.

One of the essential ways to save on airfare from California to Belfast is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 26% on airfare.

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 £457, British Airways can have you in Belfast from California in 14h 15m. The distance from California to Belfast is about 5128 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from California to Belfast one-way?

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at £353. American Airlines flights start at £374 while deals on Aer Lingus start at £489 one-way.

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

    While some choose either Los Angeles - Belfast City or Ontario - Belfast City, 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 £447). Flying from California to Belfast in June is currently the most expensive (average of £708). 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

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Alternative routes for California to Belfast

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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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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