Find flights
When to book
FAQs

Cheap flights from California to Belfast Intl Airport from £273

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
13 Jun — 20 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to Belfast Intl

Enter your travel dates to find the best prices.

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 14 May 2026.

Wed 28/1020:10
LAX
-
BFS
2 stops19h 20m
Multiple Airlines
Mon 2/1106:05
BFS
-
LAX
3 stops33h 15m
Multiple Airlines
Deal found 13/5£744
Tue 18/807:30
LAX
-
BFS
2 stops28h 20m
Multiple Airlines
Tue 1/920:15
BFS
-
LAX
2 stops27h 13m
Multiple Airlines
Deal found 12/5£745
Sun 16/820:10
LAX
-
BFS
2 stops18h 40m
Multiple Airlines
Thu 3/915:00
BFS
-
LAX
1 stop34h 30m
Multiple Airlines
Deal found 12/5£752
Sat 15/821:10
LAX
-
BFS
1 stop27h 55m
Multiple Airlines
Mon 31/809:10
BFS
-
LAX
1 stop17h 50m
Multiple Airlines
Deal found 12/5£755
Fri 29/508:15
LAX
-
BFS
3 stops24h 15m
Multiple Airlines
Wed 3/606:05
BFS
-
LAX
3 stops45h 25m
Multiple Airlines
Deal found 11/5£770
Mon 18/512:55
SFO
-
BFS
2 stops26h 25m
Multiple Airlines
Tue 2/614:45
BFS
-
SFO
1 stop38h 05m
Multiple Airlines
Deal found 13/5£776
Sun 16/820:10
LAX
-
BFS
2 stops18h 40m
Multiple Airlines
Mon 31/809:10
BFS
-
LAX
1 stop17h 50m
Multiple Airlines
Deal found 12/5£782
Sat 12/917:30
LAX
-
BFS
2 stops20h 00m
Multiple Airlines
Sun 27/914:55
BFS
-
LAX
2 stops33h 35m
Multiple Airlines
Deal found 14/5£791
Sat 15/820:10
LAX
-
BFS
2 stops17h 20m
Multiple Airlines
Thu 3/915:00
BFS
-
LAX
1 stop34h 30m
Multiple Airlines
Deal found 12/5£795
Tue 18/820:10
LAX
-
BFS
2 stops27h 40m
Multiple Airlines
Mon 31/809:10
BFS
-
LAX
1 stop17h 50m
Multiple Airlines
Deal found 12/5£796
Thu 20/820:10
LAX
-
BFS
2 stops17h 35m
Multiple Airlines
Thu 3/915:00
BFS
-
LAX
1 stop34h 30m
Multiple Airlines
Deal found 12/5£799
Sat 15/821:10
LAX
-
BFS
1 stop27h 55m
Multiple Airlines
Fri 4/920:15
BFS
-
LAX
2 stops28h 15m
Multiple Airlines
Deal found 12/5£804

Find 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 14 May 2026.

Round-trip from

£744

One-way from

£273

Popular in

June

Cheapest in

October

Average price

£831
28/10-2/11
  • 28/10-2/11
  • 5 total stops
  • 52h 35m total
  • California to Belfast
Search Deals
10/8
  • 10/8
  • 2 total stops
  • 27h 55m total
  • California to Belfast
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£124 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 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 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 14 May 2026.
Use the filters below to find and compare flights from California to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Tue 18/8

07:30-19:50

2 stops28h 20m

Belfast Intl

Tue 1/9

20:15-15:28

2 stops27h 13m

£745

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 16/8

20:10-22:50

2 stops18h 40m

Belfast Intl

Thu 3/9

15:00-17:30

1 stop34h 30m

£752

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sat 12/9

17:30-21:30

2 stops20h 00m

Belfast Intl

Sun 27/9

14:55-16:30

2 stops33h 35m

£791

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Fri 29/5

11:50-16:30

2 stops20h 40m

Belfast Intl

Wed 3/6

06:05-19:30

3 stops45h 25m

£820

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sat 15/8

21:10-09:05

1 stop27h 55m

Belfast Intl

Wed 2/9

06:15-17:30

1 stop19h 15m

£859

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Fri 29/5

07:30-16:30

2 stops25h 00m

Belfast Intl

Thu 4/6

20:05-14:35

2 stops26h 30m

£907

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 10/6

08:30-22:20

3 stops29h 50m

Belfast Intl

Tue 16/6

08:00-14:35

3 stops38h 35m

£915

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/6

06:00-19:25

2 stops29h 25m

Belfast Intl

Sun 28/6

06:45-12:00

3 stops37h 15m

£928

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 31/5

08:15-20:15

3 stops28h 00m

Belfast Intl

Wed 3/6

06:05-19:30

3 stops45h 25m

£929

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 21/6

06:35-18:25

3 stops27h 50m

Belfast Intl

Sat 27/6

07:15-12:00

3 stops36h 45m

£1,001

Flights are sorted by cheapest return flights first.

Deals found on 9/5

Showing 1-10 of 34 resultsSorted by cheapest first
1
2
3
4

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
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 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 Ontario - 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.

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
Dungannon

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 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.

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.