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Cheap flights from California to Belfast Intl Airport from £178

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
6 Aug — 13 Aug1
1 adult

Cheap flight deals from California to Belfast Intl

Keep the following information in mind while searching for California to Belfast Intl flight deals. Data was last updated 1 August 2025.

Round-trip from

£410

One-way from

£178

Popular in

June

Cheapest in

September

Average price

£531
17/8-2/9
  • 17/8-2/9
  • 2 total stops
  • 56h 25m total
  • California to Belfast
Search Deals
17/9
  • 17/9
  • 1 total stop
  • 31h 20m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£131 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
Average for round-trip flights in August 2025
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Find flight deals from California to Belfast Intl

Cheapest flights from California to Belfast Intl
Explore the most affordable flight options available from California to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 August 2025.

Sun 21/916:30LAX - BFS
1 stop19h 50mMultiple Airlines
Tue 30/920:55BFS - LAX
1 stop25h 15mMultiple Airlines
Deal found 29/7£396
Sun 21/916:05SFO - BFS
1 stop22h 20mMultiple Airlines
Mon 6/1007:00BFS - SFO
1 stop20h 30mMultiple Airlines
Deal found 31/7£495
Sat 13/906:35SJC - BFS
3 stops31h 50mMultiple Airlines
Sat 20/906:00BFS - SJC
3 stops24h 43mMultiple Airlines
Deal found 30/7£1,455

Cheapflights Fare Finder

 
Customise your flight search to find flights from California to Belfast Intl 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 1 August 2025.
Use the filters below to find and compare flights from California to Belfast Intl Airport that are best for you.

Fly from

California

Fly to

Belfast Intl

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 17/8

16:30-07:40

1 stop31h 10m

Belfast Intl

Tue 2/9

20:55-14:10

1 stop25h 15m

£410

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/9

16:05-22:25

1 stop22h 20m

Belfast Intl

Mon 6/10

07:00-19:30

1 stop20h 30m

£495

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Sat 13/9

06:35-22:25

3 stops31h 50m

Belfast Intl

Sat 20/9

06:00-22:43

3 stops24h 43m

£1,455

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Wed 17/9

16:30-07:50

1 stop31h 20m

£178

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 14/8

22:07-08:00

2 stops49h 53m

£290

OaklandBelfast

OAK - BFS

OAKBFS

Oakland

Thu 14/8

06:00-20:35

3 stops30h 35m

£435

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Thu 14/8

06:00-20:35

3 stops30h 35m

£450

Long BeachBelfast

LGB - BFS

LGBBFS

Long Beach Municipal

Fri 15/8

08:45-18:00

3 stops49h 15m

£1,068

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Best time to book a flight from California to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from California to Belfast Intl Airport (average of £67). Flying from California to Belfast Intl Airport in July is currently the most expensive (average of £90). 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 Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 August 2025.

When flying from California to Belfast Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from California to Belfast Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from California to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most travelers choose Los Angeles - Belfast Intl, San Francisco - Belfast Intl or San Jose - Belfast Intl when deciding on the best route from California to Belfast Intl Airport.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from California to Belfast Intl Airport (average of £67). Flying from California to Belfast Intl Airport in July is currently the most expensive (average of £90). 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

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Alternative routes for California to Belfast Intl

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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 Intl?

Deals for California to Belfast Intl 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 Intl?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast Intl from California.

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

Certainly. Search results for flights to Belfast Intl 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 Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from California today and book when prices fit your budget.

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