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Cheap flights from California to Belfast from £348

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BHD
28 Apr — 5 May1
1 adult

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 23 April 2025.

Round-trip from

£449

One-way from

£348

Popular in

June

Cheapest in

November

Average price

£611
14/9-25/9
  • 14/9-25/9
  • 2 total stops
  • 48h 10m total
  • California to Belfast
20/7
  • 20/7
  • 3 total stops
  • 18h 45m total
  • California to Belfast
Highest demand for flights based on searches. 9% potential increase in price (£49 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in April 2025

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 23 April 2025.

Fri 2/516:30LAX - BFS
1 stop31h 30mMultiple Airlines
Thu 15/521:00BFS - LAX
1 stop25h 10mMultiple Airlines
Deal found 22/4£421
Fri 2/516:30LAX - BHD
1 stop19h 55mMultiple Airlines
Thu 15/520:15BHD - LAX
1 stop25h 55mMultiple Airlines
Deal found 22/4£468
Wed 15/1021:30LAX - BHD
1 stop15h 15mBritish Airways
Thu 23/1012:40BHD - LAX
1 stop15h 35mBritish Airways
Deal found 22/4£501
Mon 8/916:35SFO - BHD
1 stop16h 55mBritish Airways
Wed 24/920:15BHD - SFO
1 stop25h 35mBritish Airways
Deal found 22/4£521
Wed 15/1017:17LAX - BHD
2 stops17h 23mAmerican Airlines
Thu 23/1006:35BHD - LAX
1 stop19h 00mAmerican Airlines
Deal found 22/4£524
Thu 11/914:28SFO - BHD
2 stops17h 02mAmerican Airlines
Thu 25/909:35BHD - SFO
1 stop15h 50mAmerican Airlines
Deal found 22/4£525
Thu 11/914:27SJC - BHD
2 stops17h 03mBritish Airways
Thu 25/909:35BHD - SJC
2 stops20h 47mBritish Airways
Deal found 22/4£532
Wed 29/1009:59LAX - BHD
2 stops23h 51mDelta
Wed 5/1117:20BHD - LAX
1 stop26h 25mDelta
Deal found 21/4£551
Thu 11/913:35LAX - BHD
1 stop13h 35mFinnair
Thu 25/916:20BHD - LAX
2 stops34h 13mFinnair
Deal found 22/4£561
Thu 11/908:43ONT - BHD
2 stops18h 27mBritish Airways
Thu 25/912:40BHD - ONT
2 stops17h 00mBritish Airways
Deal found 22/4£569
Thu 5/607:30SFO - BFS
3 stops24h 45mMultiple Airlines
Thu 12/606:00BFS - SFO
3 stops40h 35mMultiple Airlines
Deal found 22/4£678
Wed 23/420:15LAX - BHD
2 stops29h 00mAer Lingus
Wed 30/406:55BHD - LAX
2 stops19h 30mAer Lingus
Deal found 22/4£706

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 23 April 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 - BFS

LAXBFS

Los Angeles

Sun 14/9

16:30-21:30

1 stop21h 00m

Belfast Intl

Thu 25/9

19:00-14:10

1 stop27h 10m

£449

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/10

21:30-20:45

1 stop15h 15m

Belfast City

Thu 23/10

12:40-20:15

1 stop15h 35m

£501

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 11/9

16:30-15:30

1 stop15h 00m

Belfast City

Wed 24/9

07:05-14:10

1 stop15h 05m

£513

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 8/9

16:35-17:30

1 stop16h 55m

Belfast City

Wed 24/9

20:15-13:50

1 stop25h 35m

£521

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/10

17:17-18:40

2 stops17h 23m

Belfast City

Thu 23/10

06:35-17:35

1 stop19h 00m

£524

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 11/9

14:28-15:30

2 stops17h 02m

Belfast City

Thu 25/9

09:35-17:25

1 stop15h 50m

£525

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Thu 11/9

14:27-15:30

2 stops17h 03m

Belfast City

Thu 25/9

09:35-22:22

2 stops20h 47m

£532

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Thu 11/9

13:35-11:10

1 stop13h 35m

Belfast City

Thu 25/9

16:20-18:33

2 stops34h 13m

£561

OntarioBelfast

ONT - BHD

ONTBHD

Ontario

Thu 11/9

08:43-11:10

2 stops18h 27m

Belfast City

Thu 25/9

12:40-21:40

2 stops17h 00m

£569

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Thu 5/6

07:30-16:15

3 stops24h 45m

Belfast Intl

Thu 12/6

06:00-14:35

3 stops40h 35m

£678

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 26 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, January is the cheapest month in which you can book a flight from California to Belfast (average of £67). Flying from California to Belfast 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 April 2025.

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

Rainfall in Belfast by month

Plan your trip to Belfast by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belfast ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast when rainfall is around 50.0 mm.

Temperature in Belfast by month

Plan your trip to Belfast by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belfast, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belfast. Reviews last updated 23 April 2025.
See what other customers who have flown with Delta, KLM and Finnair from California to Belfast have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very Good

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.
  • 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 £410. KLM flights start at £619 while deals on Iberia start at £6,460 one-way.

  • What are the most popular routes 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, January is the cheapest month in which you can book a flight from California to Belfast (average of £67). Flying from California to Belfast 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

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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.

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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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