How long is the flight from Belfast to California?

American Airlines, Delta, and Virgin Atlantic can get you from Belfast to California in just under 18h. Your travel time can differ by up to 19h 32m. The distance from Belfast to California is about 5126 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in California ranges from 0.0 - 87.0 inches per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit California when rainfall is around 0.0 mm.

If weather is an important factor for your trip to California, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

What are the most popular routes from Belfast to California?

Most travelers choose Belfast Intl - Las Vegas Harry Reid Intl, Belfast City - Las Vegas Harry Reid Intl or Belfast Intl - San Francisco when deciding on the best route from Belfast to California.

What are the most popular airlines that fly from Belfast to California?

Before booking your flight from Belfast to California check out the most popular airlines for this route: British Airways, American Airlines or KLM.

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

Yes. In addition to deals on Belfast to California flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Belfast to California?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to California.

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

Yes. Cheapflights offers flight deals from Belfast to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£299+ Cheap Flights from Belfast to California

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

Airfare is above average for this route at the moment. Belfast to California flights typically cost between £477 and £501 in November. The cheapest return flight price found within the last 3 days was £510 on Multiple Airlines (5 Nov-12 Nov).

Cheap flight deals from Belfast to California

Round-trip from	£484
One-way from	£299
Popular in	February
Cheapest in	January
Average price	£483

8/11-15/11
4 total stops
82h 30m total
Belfast to California

Search Deals

15/12
3 total stops
34h 55m total
Belfast to California

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£19 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Belfast to California

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to California
Explore the most affordable flight options available from Belfast to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2025.

Sat 8/1119:45BFS - SFO

2 stops50h 50mMultiple Airlines

Sat 15/1116:40SFO - BFS

2 stops31h 40mMultiple Airlines

Deal found 11/10£484

Wed 5/1117:30BFS - LAX

2 stops27h 35mMultiple Airlines

Wed 12/1112:30LAX - BFS

2 stops17h 35mMultiple Airlines

Deal found 11/10£510

Thu 27/1106:30BHD - ONT

2 stops21h 12mDelta

Thu 4/1206:40ONT - BHD

2 stops26h 10mDelta

Deal found 13/10£604

Tue 25/1107:15BFS - SFO

3 stops39h 15mMultiple Airlines

Tue 2/1210:15SFO - BFS

3 stops27h 25mMultiple Airlines

Deal found 11/10£625

Sat 8/1106:30BHD - SFO

1 stop13h 20mDelta

Sat 15/1110:30SFO - BHD

2 stops22h 20mDelta

Deal found 11/10£626

Sat 8/1111:35BHD - SFO

2 stops20h 24mFinnair

Sat 15/1110:16SFO - BHD

2 stops19h 59mFinnair

Deal found 11/10£628

Thu 30/1006:35BHD - LAX

1 stop17h 15mAmerican Airlines

Mon 3/1117:45LAX - BHD

1 stop14h 20mAmerican Airlines

Deal found 13/10£632

Thu 27/1106:35BHD - ONT

2 stops34h 21mAmerican Airlines

Sun 30/1106:10ONT - BHD

2 stops20h 10mAmerican Airlines

Deal found 13/10£653

Thu 27/1114:45BFS - LAX

2 stops34h 15mMultiple Airlines

Thu 4/1219:30LAX - BFS

2 stops18h 30mMultiple Airlines

Deal found 13/10£686

Mon 1/1217:20BHD - LAS

1 stop28h 55mVirgin Atlantic

Tue 9/1216:05LAS - BHD

1 stop16h 45mVirgin Atlantic

Deal found 12/10£703

Mon 1/1211:30BHD - LAS

1 stop15h 20mFinnair

Tue 9/1211:00LAS - BHD

2 stops16h 30mFinnair

Deal found 12/10£721

Mon 1/1206:30BHD - LAS

2 stops24h 00mDelta

Tue 9/1210:00LAS - BHD

2 stops22h 50mDelta

Deal found 12/10£729

Best flights from Belfast to California
Discover carefully curated flight deals from Belfast to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 October 2025.

Sat 8/1119:45BFS - SFO

2 stops50h 50mMultiple Airlines

Sat 15/1116:40SFO - BFS

2 stops31h 40mMultiple Airlines

Deal found 11/10£484

Mon 9/311:30BHD - SNA

2 stops18h 00mAmerican Airlines

Wed 11/313:43SNA - BHD

2 stops19h 52mAmerican Airlines

Deal found 10/10£575

Thu 27/1106:30BHD - ONT

2 stops21h 12mDelta

Thu 4/1206:40ONT - BHD

2 stops26h 10mDelta

Deal found 13/10£604

Fri 16/117:20BHD - ONT

2 stops37h 32mVirgin Atlantic

Fri 23/106:00ONT - BHD

2 stops26h 50mVirgin Atlantic

Deal found 12/10£647

Fri 16/108:45BHD - SNA

2 stops21h 04mBritish Airways

Fri 23/111:42SNA - BHD

2 stops18h 33mBritish Airways

Deal found 12/10£652

Mon 1/1211:30BHD - LAS

1 stop15h 20mFinnair

Tue 9/1211:00LAS - BHD

2 stops16h 30mFinnair

Deal found 12/10£721

Wed 5/1106:30BFS - LAX

2 stops36h 25mMultiple Airlines

Wed 12/1105:30LAX - BFS

3 stops26h 45mMultiple Airlines

Deal found 11/10£534

Wed 4/312:25BHD - SFO

1 stop14h 20mAmerican Airlines

Sun 8/313:25SFO - BHD

2 stops17h 30mAmerican Airlines

Deal found 10/10£584

Thu 5/311:05BHD - SFO

1 stop15h 40mAmerican Airlines

Mon 9/321:40SFO - BHD

1 stop13h 55mAmerican Airlines

Deal found 10/10£599

Fri 16/107:20BHD - LAX

2 stops21h 48mMultiple Airlines

Fri 23/111:30LAX - BHD

2 stops25h 00mMultiple Airlines

Deal found 12/10£605

Mon 1/1217:20BHD - LAS

1 stop28h 55mVirgin Atlantic

Tue 9/1216:05LAS - BHD

1 stop16h 45mVirgin Atlantic

Deal found 12/10£703

Wed 11/206:35BHD - LAS

1 stop20h 15mBritish Airways

Wed 18/218:35LAS - BHD

1 stop14h 00mBritish Airways

Deal found 11/10£706

Mon 1/1206:30BHD - LAS

2 stops24h 00mDelta

Tue 9/1210:00LAS - BHD

2 stops22h 50mDelta

Deal found 12/10£729

Thu 5/309:05BHD - ONT

2 stops20h 35mAmerican Airlines

Mon 9/317:02ONT - BHD

2 stops20h 13mAmerican Airlines

Deal found 10/10£604

Tue 25/1107:15BFS - SFO

3 stops39h 15mMultiple Airlines

Tue 2/1210:15SFO - BFS

3 stops27h 25mMultiple Airlines

Deal found 11/10£625

Thu 30/1006:35BHD - LAX

1 stop17h 15mAmerican Airlines

Mon 3/1117:45LAX - BHD

1 stop14h 20mAmerican Airlines

Deal found 13/10£632

Thu 30/1006:30BHD - SNA

2 stops19h 34mDelta

Mon 3/1111:05SNA - BHD

2 stops21h 45mDelta

Deal found 13/10£786

Thu 27/1106:30BFS - LAX

2 stops20h 57mMultiple Airlines

Thu 4/1208:20LAX - BFS

3 stops28h 45mMultiple Airlines

Deal found 13/10£706

Thu 27/1106:35BHD - ONT

2 stops34h 21mAmerican Airlines

Sun 30/1106:10ONT - BHD

2 stops20h 10mAmerican Airlines

Deal found 13/10£653

Wed 11/211:25BHD - LAS

2 stops18h 59mMultiple Airlines

Wed 18/211:16LAS - BHD

2 stops18h 59mMultiple Airlines

Deal found 11/10£729

Fri 6/308:45BHD - LAS

1 stop18h 05mAmerican Airlines

Tue 10/321:55LAS - BHD

1 stop13h 45mAmerican Airlines

Deal found 10/10£754

Mon 1/1222:20BFS - LAS

2 stops31h 11mMultiple Airlines

Tue 9/1220:45LAS - BFS

1 stop17h 05mMultiple Airlines

Deal found 12/10£764

Wed 11/206:00BFS - LAS

3 stops43h 50mMultiple Airlines

Wed 18/207:00LAS - BFS

3 stops22h 45mMultiple Airlines

Deal found 11/10£815

Thu 26/309:05BHD - LAX

1 stop14h 45mAmerican Airlines

Mon 30/316:30LAX - BHD

2 stops17h 00mAmerican Airlines

Deal found 10/10£871

Mon 27/1019:20BFS - LAS

3 stops32h 45mMultiple Airlines

Sat 1/1108:45LAS - BFS

3 stops22h 55mMultiple Airlines

Deal found 12/10£837

Thu 26/306:35BHD - SNA

2 stops20h 40mAmerican Airlines

Mon 30/312:48SNA - BHD

2 stops18h 52mAmerican Airlines

Deal found 10/10£876

Fri 16/117:30BFS - LAX

1 stop28h 30mMultiple Airlines

Fri 23/120:15LAX - BFS

2 stops16h 15mMultiple Airlines

Deal found 12/10£851

Wed 26/1120:55BFS - SFO

2 stops22h 55mMultiple Airlines

Wed 3/1219:25SFO - BFS

2 stops18h 55mMultiple Airlines

Deal found 12/10£934

Thu 27/1106:55BFS - LAS

2 stops18h 55mMultiple Airlines

Thu 4/1212:10LAS - BFS

2 stops17h 30mMultiple Airlines

Deal found 12/10£1,045

Last-minute flights from Belfast to California
Discover last-minute flight deals from Belfast to California. Data last updated 13 October 2025 and is based on user searches.

Mon 27/1019:20BFS - LAS

3 stops32h 45mMultiple Airlines

Sat 1/1108:45LAS - BFS

3 stops22h 55mMultiple Airlines

Deal found 12/10£837

Mon 27/1017:20BHD - LAS

3 stops34h 45mMultiple Airlines

Sat 1/1122:15LAS - BHD

3 stops35h 35mMultiple Airlines

Deal found 12/10£870

Thu 30/1006:35BHD - LAX

1 stop17h 15mAmerican Airlines

Mon 3/1117:45LAX - BHD

1 stop14h 20mAmerican Airlines

Deal found 13/10£632

Thu 30/1006:30BHD - SNA

2 stops19h 34mDelta

Mon 3/1111:05SNA - BHD

2 stops21h 45mDelta

Deal found 13/10£786

Wed 5/1117:30BFS - LAX

2 stops27h 35mMultiple Airlines

Wed 12/1112:30LAX - BFS

2 stops17h 35mMultiple Airlines

Deal found 11/10£510

Sat 8/1119:45BFS - SFO

2 stops50h 50mMultiple Airlines

Sat 15/1116:40SFO - BFS

2 stops31h 40mMultiple Airlines

Deal found 11/10£484

Sat 8/1106:30BHD - SFO

1 stop13h 20mDelta

Sat 15/1110:30SFO - BHD

2 stops22h 20mDelta

Deal found 11/10£626

Sat 8/1111:35BHD - SFO

2 stops20h 24mFinnair

Sat 15/1110:16SFO - BHD

2 stops19h 59mFinnair

Deal found 11/10£628

Tue 25/1107:15BFS - SFO

3 stops39h 15mMultiple Airlines

Tue 2/1210:15SFO - BFS

3 stops27h 25mMultiple Airlines

Deal found 11/10£625

Thu 27/1106:30BHD - ONT

2 stops21h 12mDelta

Thu 4/1206:40ONT - BHD

2 stops26h 10mDelta

Deal found 13/10£604

Thu 27/1106:35BHD - ONT

2 stops34h 21mAmerican Airlines

Sun 30/1106:10ONT - BHD

2 stops20h 10mAmerican Airlines

Deal found 13/10£653

Thu 27/1114:45BFS - LAX

2 stops34h 15mMultiple Airlines

Thu 4/1219:30LAX - BFS

2 stops18h 30mMultiple Airlines

Deal found 13/10£686

One-way flights from Belfast to California
Search for one-way flight options from Belfast to California. Find affordable one-way fares based on user searches. Data last updated 13 October 2025.

Mon 15/1206:50BFS - LAS

3 stops34h 55mMultiple Airlines

Deal found 11/10£299

Thu 15/116:35BFS - LAS

3 stops49h 40mMultiple Airlines

Deal found 11/10£317

Tue 6/118:00BHD - SFO

3 stops55h 10mMultiple Airlines

Deal found 11/10£1,318

Fly from

Fly to

Route

Depart

Return

Price

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 8/11

19:45-14:35

2 stops50h 50m

San Francisco

Sat 15/11

16:40-08:20

2 stops31h 40m

£484

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Wed 5/11

06:30-10:55

2 stops36h 25m

Los Angeles

Wed 12/11

05:30-16:15

3 stops26h 45m

£534

BelfastSanta Ana

BHD - SNA

BHDSNA

Belfast City

Mon 9/3

11:30-22:30

2 stops18h 00m

Santa Ana J. Wayne/Orange Cnty

Wed 11/3

13:43-16:35

2 stops19h 52m

£575

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 4/3

12:25-18:45

1 stop14h 20m

San Francisco

Sun 8/3

13:25-13:55

2 stops17h 30m

£584

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 5/3

11:05-18:45

1 stop15h 40m

San Francisco

Mon 9/3

21:40-18:35

1 stop13h 55m

£599

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 27/11

06:30-19:42

2 stops21h 12m

Ontario

Thu 4/12

06:40-16:50

2 stops26h 10m

£604

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Thu 5/3

09:05-21:40

2 stops20h 35m

Ontario

Mon 9/3

17:02-20:15

2 stops20h 13m

£604

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Fri 16/1

07:20-21:08

2 stops21h 48m

Los Angeles

Fri 23/1

11:30-20:30

2 stops25h 00m

£605

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Tue 25/11

07:15-14:30

3 stops39h 15m

San Francisco

Tue 2/12

10:15-21:40

3 stops27h 25m

£625

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Thu 30/10

06:35-16:50

1 stop17h 15m

Los Angeles

Mon 3/11

17:45-16:05

1 stop14h 20m

£632

Flights are sorted by cheapest return flights first.

Deals found on 11/10

Showing 1-10 of 32 results

Best time to book a flight from Belfast to California

Have a flexible travel schedule? Discover the best time to fly to California from Belfast 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 Belfast to California

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

Currently, November is the cheapest month in which you can book a flight from Belfast to California (average of £357). Flying from Belfast to California in December is currently the most expensive (average of £507). 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 BFS to CA?

When flying from Belfast to California, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 11% versus a flight in the afternoon.

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

Reviews of airlines servicing California

Check out reviews from past customers who have flown with KLM, American Airlines, andBritish Airways from Belfast to California to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.7

Good

1,402 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

KLM

7.7

Good

1,402 reviews

KLM

7.7

Good

1,402 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

American Airlines

7.2

Good

11,044 reviews

KLM

7.7

Good

1,402 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

British Airways

6.7

Okay

7,451 reviews

KLM

7.7

Good

1,402 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

How long is the flight from Belfast to California?
American Airlines, Delta, and Virgin Atlantic can get you from Belfast to California in just under 18h. Your travel time can differ by up to 19h 32m. The distance from Belfast to California is about 5126 mi. This flight may include one or multiple stops.
What are the most popular routes from Belfast to California?
Most travelers choose Belfast Intl - Las Vegas Harry Reid Intl, Belfast City - Las Vegas Harry Reid Intl or Belfast Intl - San Francisco when deciding on the best route from Belfast to California.
Can I find deals for flights from Belfast to California that include hotel bookings?
Yes. In addition to deals on Belfast to California flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast to California?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to California.
Can I find deals for business class flights from Belfast to California?
Yes. Cheapflights offers flight deals from Belfast to California 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 Belfast to California?
Currently, November is the cheapest month in which you can book a flight from Belfast to California (average of £357). Flying from Belfast to California in December is currently the most expensive (average of £507). 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

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Complete your trip

California car hire

Los Angeles Airport car hire

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Fresno Airterminal Airport car hire

Direct flights to United States

Top 3 airlines flying from Belfast to California

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£370	Average£586	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£474	Average£526	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
KLM	Cheapest£508	Average£615	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to California from Belfast today with Cheapflights!

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

Cheapflights helps you find that perfect flight to California from Belfast by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Belfast to California with no change fees.

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Of course! You can now track prices for flights from Belfast to California 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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Cheap flights from Belfast to California from £299

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast to California

Keep the following information in mind while searching for Belfast to California flight deals. Data was last updated 13 October 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast to California

Cheapest flights from Belfast to CaliforniaExplore the most affordable flight options available from Belfast to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2025.

Explore the most affordable flight options available from Belfast to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Belfast to California

Have a flexible travel schedule? Discover the best time to fly to California from Belfast with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Belfast to California

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

What is the cheapest time of day to fly from BFS to CA?

Find hourly flight availability from Belfast to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 October 2025.

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

Reviews of airlines servicing California

Check out reviews from past customers who have flown with KLM, American Airlines, andBritish Airways from Belfast to California to help guide your decision. Users have also rated airlines 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 Belfast to California. 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 Belfast to California?

What are the most popular routes from Belfast to California?

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

How can I find direct flights from Belfast to California?

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

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

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 Belfast to California

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Belfast to California

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 Belfast to California?

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

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

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

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Cheapest flights from Belfast to California
Explore the most affordable flight options available from Belfast to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 October 2025.