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$271+ Cheap flights from California to Belfast

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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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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 January 14, 2026.

Round-trip from

$575
(American Airlines)

One-way from

$271
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$700
From California to Belfast
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One-way flight from California to Belfast
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Highest demand for flights based on searches. 16% potential increase in price ($184 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from California to Belfast

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 January 14, 2026.

This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/37:25 pm
LAX
-
BHD
1 stop16h 50m
American Airlines
Tue 2/1711:25 am
BHD
-
LAX
1 stop17h 00m
American Airlines
Deal found 1/12$575
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/108:40 pm
SFO
-
BHD
1 stop27h 35m
British Airways
Tue 2/178:45 am
BHD
-
SFO
1 stop14h 15m
British Airways
Deal found 1/12$583
This American Airlines deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/107:30 am
SFO
-
BHD
2 stops19h 00m
American Airlines
Tue 2/178:45 am
BHD
-
SFO
2 stops19h 29m
American Airlines
Deal found 1/12$589
This British Airways deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/253:30 pm
LAX
-
BHD
1 stop17h 05m
British Airways
Sun 3/18:25 pm
BHD
-
LAX
1 stop25h 05m
British Airways
Deal found 1/13$601
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:30 pm
SFO
-
BHD
1 stop15h 05m
British Airways
Sun 3/86:30 am
BHD
-
SFO
1 stop16h 30m
British Airways
Deal found 1/13$621
This British Airways deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:30 pm
SFO
-
BHD
1 stop15h 05m
British Airways
Sun 3/18:25 pm
BHD
-
SFO
1 stop30h 20m
British Airways
Deal found 1/13$626
This American Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/235:30 pm
LAX
-
BHD
1 stop17h 45m
American Airlines
Tue 2/38:45 am
BHD
-
LAX
1 stop14h 35m
American Airlines
Deal found 1/13$634
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/31:00 pm
LAX
-
BHD
2 stops17h 50m
British Airways
Tue 2/178:45 am
BHD
-
LAX
2 stops21h 09m
British Airways
Deal found 1/12$637
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/33:09 pm
ONT
-
BHD
2 stops17h 36m
British Airways
Tue 2/1711:25 am
BHD
-
ONT
2 stops19h 24m
British Airways
Deal found 1/12$637
This British Airways deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:00 am
ONT
-
BHD
2 stops26h 35m
British Airways
Sun 3/110:40 am
BHD
-
ONT
2 stops19h 49m
British Airways
Deal found 1/12$641
This British Airways deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/410:55 am
SNA
-
BHD
2 stops21h 40m
British Airways
Sun 3/86:30 am
BHD
-
SNA
2 stops22h 09m
British Airways
Deal found 1/11$641
This oojo deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/33:15 pm
SNA
-
BHD
2 stops17h 30m
British Airways
Tue 2/177:25 pm
BHD
-
SNA
2 stops34h 14m
British Airways
Deal found 1/12$642

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated January 14, 2026.
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

Tue 2/3

7:25 pm-8:15 pm

1 stop16h 50m

Belfast City

Tue 2/17

11:25 am-8:25 pm

1 stop17h 00m

$575

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 2/10

8:40 pm-8:15 am

1 stop27h 35m

Belfast City

Tue 2/17

8:45 am-3:00 pm

1 stop14h 15m

$583

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 2/10

7:30 am-10:30 am

2 stops19h 00m

Belfast City

Tue 2/17

8:45 am-8:14 pm

2 stops19h 29m

$589

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 3/4

3:30 pm-4:35 pm

1 stop17h 05m

Belfast City

Sun 3/8

8:25 pm-2:30 pm

1 stop25h 05m

$601

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 2/25

3:30 pm-4:35 pm

1 stop17h 05m

Belfast City

Sun 3/1

8:25 pm-1:30 pm

1 stop25h 05m

$601

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/4

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 3/8

6:30 am-3:00 pm

1 stop16h 30m

$621

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 2/25

5:30 pm-4:35 pm

1 stop15h 05m

Belfast City

Sun 3/1

8:25 pm-6:45 pm

1 stop30h 20m

$626

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Tue 2/3

3:09 pm-4:45 pm

2 stops17h 36m

Belfast City

Tue 2/17

11:25 am-10:49 pm

2 stops19h 24m

$637

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 3/4

2:39 pm-7:10 pm

2 stops20h 31m

Belfast City

Sun 3/8

10:40 am-11:59 pm

2 stops20h 19m

$641

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Wed 2/25

6:00 am-4:35 pm

2 stops26h 35m

Belfast City

Sun 3/1

10:40 am-10:07 pm

2 stops19h 27m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 53 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 round-trip 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 $585). Flying from California to Belfast in June is currently the most expensive (average of $927). 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.

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?

    Airlines like American Airlines and British Airways fly from California to Belfast in about 16h 50m. The time it takes to get you to your destination can typically vary by up to 10h 45m. There are 5128 mi between California and Belfast. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from California to Belfast is San Francisco - Belfast Intl. You may also consider San Francisco - Belfast City or Los Angeles - Belfast Intl.

  • 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 vacation 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 $585). Flying from California to Belfast in June is currently the most expensive (average of $927). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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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Top airline flying from California to Belfast

Discover the top airline that operate flights from California to Belfast. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$599Average$890FlexibilityNo cancel feeOn-time70%

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