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Cheap flights from California to Belfast Intl Airport from £268

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
14 Aug — 21 Aug1
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 15 July 2026.

Thu 1/1016:30
SFO
-
BFS
2 stops22h 30m
Multiple Airlines
Mon 5/1020:55
BFS
-
SFO
3 stops32h 04m
Multiple Airlines
Deal found 11/7£715
Thu 15/1011:10
SFO
-
BFS
3 stops27h 50m
Multiple Airlines
Sat 31/1018:55
BFS
-
SFO
2 stops28h 40m
Multiple Airlines
Deal found 10/7£734
Mon 17/818:25
LAX
-
BFS
2 stops20h 40m
Multiple Airlines
Thu 27/812:45
BFS
-
LAX
2 stops27h 35m
Multiple Airlines
Deal found 10/7£787
Wed 26/814:00
LAX
-
BFS
2 stops25h 15m
Multiple Airlines
Wed 2/907:30
BFS
-
LAX
3 stops39h 30m
Multiple Airlines
Deal found 12/7£798
Fri 28/808:10
SFO
-
BFS
2 stops24h 20m
Multiple Airlines
Fri 4/920:15
BFS
-
SFO
3 stops29h 20m
Multiple Airlines
Deal found 14/7£806
Tue 11/808:15
LAX
-
BFS
3 stops23h 00m
Multiple Airlines
Tue 18/805:55
BFS
-
LAX
3 stops37h 24m
Multiple Airlines
Deal found 14/7£813
Thu 13/816:05
SFO
-
BFS
1 stop22h 45m
Multiple Airlines
Thu 20/821:05
BFS
-
SFO
2 stops31h 45m
Multiple Airlines
Deal found 14/7£875
Sun 23/814:40
SJC
-
BFS
3 stops21h 35m
Multiple Airlines
Sun 30/809:55
BFS
-
SJC
3 stops20h 32m
Multiple Airlines
Deal found 10/7£1,153

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 15 July 2026.

Round-trip from

£715

One-way from

£268
1/10-5/10
  • 1/10-5/10
  • 5 total stops
  • 54h 34m total
  • California to Belfast
Search Deals
18/9
  • 18/9
  • 3 total stops
  • 42h 05m total
  • California to Belfast
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 15 July 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

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 1/10

16:30-23:25

2 stops22h 55m

Belfast Intl

Mon 5/10

20:55-20:47

2 stops31h 52m

£722

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Mon 17/8

18:25-17:50

1 stop15h 25m

Belfast Intl

Thu 27/8

21:10-18:12

2 stops53h 02m

£788

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 28/8

08:10-16:30

2 stops24h 20m

Belfast Intl

Fri 4/9

20:15-17:35

3 stops29h 20m

£806

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Tue 11/8

07:30-19:50

2 stops28h 20m

Belfast Intl

Tue 18/8

05:55-11:19

3 stops37h 24m

£821

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 13/8

08:30-18:55

2 stops26h 25m

Belfast Intl

Thu 20/8

08:20-21:55

3 stops45h 35m

£883
Fastest return journey

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 15/10

20:30-22:50

1 stop18h 20m

Belfast Intl

Sat 31/10

08:50-22:44

2 stops20h 54m

£891

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Mon 3/8

20:30-10:40

1 stop30h 10m

Belfast Intl

Thu 6/8

08:20-16:40

2 stops16h 20m

£995

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles Los Angeles

Sun 27/12

07:00-20:10

2 stops29h 10m

Belfast Intl

Sat 2/1

07:50-07:20

3 stops31h 30m

£1,005

San JoseBelfast

SJC - BFS

SJCBFS

San Jose

Sun 23/8

14:40-20:15

3 stops21h 35m

Belfast Intl

Sun 30/8

09:55-22:27

3 stops20h 32m

£1,153
Cheapest one-way

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Fri 18/9

06:00-08:05

3 stops42h 05m

£268

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 12 resultsSorted by cheapest first
1
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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 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

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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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