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.

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).

What are the most popular routes from California to Belfast?

While some choose either Los Angeles - Belfast City or Ontario - Belfast City, Los Angeles - Belfast Intl is the most popular route from California to Belfast.

What is the cheapest month to fly from California to Belfast?

The best pricing can be found in the month of November. Prices to Belfast from California average £625. You can even find prices in November for less than £625, as users have found deals to Belfast from as low as £486. The month of June appears to be one of the more expensive times to travel to Belfast from California. Flying in the targeted month can save you up to 28%.

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.

£158+ Flights from California to Belfast

Cheap flight deals from California to Belfast

Round-trip from	£404
One-way from	£158
Popular in	June
Cheapest in	November
Average price	£713

8/9-17/9
2 total stops
47h 05m total
California to Belfast

Search Deals

22/9
1 total stop
14h 40m total
California to Belfast

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£88 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

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 4 July 2025.

Mon 8/916:25LAX - BFS

1 stop31h 05mMultiple Airlines

Wed 17/906:10BFS - LAX

1 stop16h 00mMultiple Airlines

Deal found 3/7£404

Mon 8/916:25LAX - BHD

1 stop20h 00mMultiple Airlines

Wed 17/907:05BHD - LAX

1 stop15h 05mMultiple Airlines

Deal found 3/7£434

Wed 15/1019:20SFO - BHD

1 stop15h 20mBritish Airways

Tue 21/1006:35BHD - SFO

1 stop18h 50mBritish Airways

Deal found 3/7£466

Wed 15/1015:40LAX - BHD

1 stop15h 55mBritish Airways

Thu 23/1006:35BHD - LAX

1 stop19h 30mBritish Airways

Deal found 3/7£467

Wed 15/1010:55SFO - BHD

2 stops18h 35mAmerican Airlines

Tue 21/1009:35BHD - SFO

2 stops20h 32mAmerican Airlines

Deal found 3/7£475

Wed 15/1014:44LAX - BHD

2 stops16h 51mAmerican Airlines

Thu 23/1006:35BHD - LAX

1 stop19h 30mAmerican Airlines

Deal found 2/7£488

Wed 3/1213:50SFO - BHD

1 stop23h 10mDelta

Sun 7/1217:20BHD - SFO

1 stop26h 30mDelta

Deal found 2/7£542

Wed 29/1013:15OAK - BHD

2 stops24h 45mDelta

Sun 2/1117:20BHD - OAK

2 stops38h 33mDelta

Deal found 3/7£553

Sun 17/820:10SFO - BFS

2 stops42h 45mMultiple Airlines

Sun 24/806:10BFS - SFO

1 stop20h 00mMultiple Airlines

Deal found 3/7£580

Wed 3/1213:55SFO - BHD

1 stop18h 55mKLM

Sun 7/1217:20BHD - SFO

1 stop26h 30mKLM

Deal found 3/7£581

Mon 28/716:45ONT - BHD

2 stops16h 45mBritish Airways

Thu 7/812:40BHD - ONT

2 stops19h 28mBritish Airways

Deal found 3/7£594

Fri 17/1012:43SNA - BHD

2 stops21h 32mIberia

Tue 21/1009:35BHD - SNA

2 stops42h 37mIberia

Deal found 3/7£615

Best flights from California to Belfast
Discover carefully curated flight deals from California to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 July 2025.

Mon 8/916:25LAX - BFS

1 stop31h 05mMultiple Airlines

Wed 17/906:10BFS - LAX

1 stop16h 00mMultiple Airlines

Deal found 3/7£404

Wed 15/1019:20SFO - BHD

1 stop15h 20mBritish Airways

Tue 21/1006:35BHD - SFO

1 stop18h 50mBritish Airways

Deal found 3/7£466

Wed 15/1010:55SFO - BHD

2 stops18h 35mAmerican Airlines

Tue 21/1009:35BHD - SFO

2 stops20h 32mAmerican Airlines

Deal found 3/7£475

Wed 3/1213:50SFO - BHD

1 stop23h 10mDelta

Sun 7/1217:20BHD - SFO

1 stop26h 30mDelta

Deal found 2/7£542

Wed 3/1213:55SFO - BHD

1 stop18h 55mKLM

Sun 7/1217:20BHD - SFO

1 stop26h 30mKLM

Deal found 3/7£581

Fri 17/1012:43SNA - BHD

2 stops21h 32mIberia

Tue 21/1009:35BHD - SNA

2 stops42h 37mIberia

Deal found 3/7£615

Mon 28/713:50LAX - BHD

1 stop19h 05mVirgin Atlantic

Sat 9/806:30BHD - LAX

1 stop16h 20mVirgin Atlantic

Deal found 3/7£744

Mon 8/916:25LAX - BHD

1 stop20h 00mMultiple Airlines

Wed 17/907:05BHD - LAX

1 stop15h 05mMultiple Airlines

Deal found 3/7£434

Wed 15/1015:40LAX - BHD

1 stop15h 55mBritish Airways

Thu 23/1006:35BHD - LAX

1 stop19h 30mBritish Airways

Deal found 3/7£467

Wed 15/1014:44LAX - BHD

2 stops16h 51mAmerican Airlines

Thu 23/1006:35BHD - LAX

1 stop19h 30mAmerican Airlines

Deal found 2/7£488

Wed 29/1013:15OAK - BHD

2 stops24h 45mDelta

Sun 2/1117:20BHD - OAK

2 stops38h 33mDelta

Deal found 3/7£553

Sun 17/820:10SFO - BFS

2 stops42h 45mMultiple Airlines

Sun 24/806:10BFS - SFO

1 stop20h 00mMultiple Airlines

Deal found 3/7£580

Last-minute flights from California to Belfast
Discover last-minute flight deals from California to Belfast. Data last updated 4 July 2025 and is based on user searches.

Wed 9/716:30LAX - BHD

1 stop14h 35mMultiple Airlines

Fri 18/718:50BHD - LAX

2 stops30h 27mMultiple Airlines

Deal found 2/7£878

Wed 9/706:10ONT - BHD

2 stops19h 10mBritish Airways

Fri 18/706:35BHD - ONT

2 stops20h 18mBritish Airways

Deal found 2/7£1,806

Thu 10/719:50SFO - BHD

2 stops29h 00mMultiple Airlines

Sun 20/715:20BHD - SFO

2 stops34h 05mMultiple Airlines

Deal found 3/7£876

Thu 10/716:30LAX - BFS

1 stop23h 00mMultiple Airlines

Sat 19/715:35BFS - LAX

1 stop30h 35mMultiple Airlines

Deal found 2/7£894

Thu 10/713:45SFO - BHD

1 stop23h 20mKLM

Sun 20/717:25BHD - SFO

1 stop26h 20mKLM

Deal found 3/7£988

Thu 10/714:40SFO - BFS

2 stops24h 10mMultiple Airlines

Sun 20/707:20BFS - SFO

3 stops45h 33mMultiple Airlines

Deal found 3/7£1,321

Sun 13/721:30LAX - BHD

2 stops27h 45mBritish Airways

Sun 20/715:20BHD - LAX

2 stops37h 09mBritish Airways

Deal found 2/7£854

Sun 13/713:50LAX - BHD

1 stop19h 05mKLM

Sun 20/717:25BHD - LAX

1 stop29h 25mKLM

Deal found 2/7£1,062

Fri 18/706:21SFO - BHD

2 stops19h 04mBritish Airways

Thu 31/712:40BHD - SFO

2 stops28h 41mBritish Airways

Deal found 3/7£804

Fri 18/713:45SFO - BHD

1 stop23h 30mDelta

Thu 31/706:30BHD - SFO

1 stop13h 15mDelta

Deal found 3/7£969

Sat 26/716:30LAX - BHD

1 stop31h 40mMultiple Airlines

Sun 10/816:35BHD - LAX

1 stop29h 25mMultiple Airlines

Deal found 2/7£609

Mon 28/713:25LAX - BHD

1 stop15h 30mAmerican Airlines

Thu 7/812:40BHD - LAX

2 stops19h 08mAmerican Airlines

Deal found 3/7£577

One-way flights from California to Belfast
Search for one-way flight options from California to Belfast. Find affordable one-way fares based on user searches. Data last updated 4 July 2025.

Mon 22/915:05LAX - BHD

1 stop14h 40mMultiple Airlines

Deal found 3/7£158

Mon 22/915:05LAX - BFS

2 stops22h 50mMultiple Airlines

Deal found 3/7£172

Fri 15/822:07SFO - BFS

2 stops49h 38mMultiple Airlines

Deal found 2/7£276

Sun 16/1119:20LAX - BHD

1 stop16h 55mBritish Airways

Deal found 3/7£292

Sun 16/1117:01ONT - BHD

2 stops17h 39mBritish Airways

Deal found 3/7£296

Sat 20/1213:50SFO - BHD

1 stop23h 10mKLM

Deal found 2/7£643

Sat 20/1206:00SFO - BHD

3 stops21h 10mMultiple Airlines

Deal found 2/7£656

Sat 20/1217:20SFO - BHD

2 stops17h 00mBritish Airways

Deal found 2/7£687

Sat 20/1210:10OAK - BHD

2 stops17h 00mBritish Airways

Deal found 2/7£1,580

Thu 17/714:47SNA - BHD

2 stops19h 58mBritish Airways

Deal found 3/7£6,317

Cheapflights Fare Finder

Use the filters below to find and compare flights from California to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Mon 8/9

16:25-07:30

1 stop31h 05m

Belfast Intl

Wed 17/9

06:10-14:10

1 stop16h 00m

£404

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Mon 8/9

16:25-20:25

1 stop20h 00m

Belfast City

Wed 17/9

07:05-14:10

1 stop15h 05m

£434

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 15/10

19:20-18:40

1 stop15h 20m

Belfast City

Tue 21/10

06:35-17:25

1 stop18h 50m

£466

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/10

15:40-15:35

1 stop15h 55m

Belfast City

Thu 23/10

06:35-18:05

1 stop19h 30m

£467

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 15/10

10:55-13:30

2 stops18h 35m

Belfast City

Tue 21/10

09:35-22:07

2 stops20h 32m

£475

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 15/10

14:44-15:35

2 stops16h 51m

Belfast City

Thu 23/10

06:35-18:05

1 stop19h 30m

£488

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:50-21:00

1 stop23h 10m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£542

OaklandBelfast

OAK - BHD

OAKBHD

Oakland

Wed 29/10

13:15-21:00

2 stops24h 45m

Belfast City

Sun 2/11

17:20-23:53

2 stops38h 33m

£553

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Sun 17/8

20:10-22:55

2 stops42h 45m

Belfast Intl

Sun 24/8

06:10-18:10

1 stop20h 00m

£580

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 3/12

13:55-16:50

1 stop18h 55m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£581

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 28 results

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?

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.

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

Reviews of airlines servicing Belfast

Read through reviews of airlines operating flights from California to Belfast, such as Delta, KLM, andVirgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

7,982 reviews

Check prices

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.

Delta

8.0

Very Good

7,982 reviews

Delta

8.0

Very Good

7,982 reviews

Check prices

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.

KLM

7.8

Good

1,367 reviews

Delta

8.0

Very Good

7,982 reviews

Check prices

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.

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very Good

7,982 reviews

Check prices

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.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very Good

7,982 reviews

Check prices

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.

Iberia

7.0

Good

2,820 reviews

Delta

8.0

Very Good

7,982 reviews

Check prices

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

What are the most popular routes from California to Belfast?
While some choose either Los Angeles - Belfast City or Ontario - Belfast City, Los Angeles - Belfast Intl is the most popular route 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for California to Belfast

Fly with Cheapflights

How does Cheapflights help users find flights from California to Belfast?

Deals for California to Belfast 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?

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.

Can Cheapflights notify me if prices for flights from California to Belfast become cheaper?

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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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.

Cheap flights from California to Belfast from £158

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 4 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from California to Belfast

Cheapest flights from California to BelfastExplore 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 4 July 2025.

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 4 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from California to Belfast that are best for you.

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.

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?

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 4 July 2025.

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

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 4 July 2025.

Read through reviews of airlines operating flights from California to Belfast, such as Delta, KLM, andVirgin Atlantic. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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 most popular routes from California to Belfast?

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

How can I find direct flights from California to Belfast?

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

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

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.

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?

Why should you use Cheapflights to find cheap flight tickets from California to Belfast?

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

Can Cheapflights notify me if prices for flights from California to Belfast become cheaper?

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Book with Flexibility

Travel Smart

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 4 July 2025.