How long is the flight from California to Belfast?

For as low as £448, British Airways can have you in Belfast from California in 14h 35m. The distance from California to Belfast is about 5128 mi.

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 San Francisco - Belfast City or Oakland - Belfast City, San Francisco - 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.

£204+ Flights from California to Belfast

Cheap flight deals from California to Belfast

Enter your travel dates to find the best prices.

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 17 December 2025.

Wed 24/1215:37SFO - BHD

2 stops31h 53mBritish Airways

Tue 30/1219:25BHD - SFO

2 stops33h 40mBritish Airways

Deal found 16/12£1,111

Wed 24/1221:20LAX - BHD

2 stops35h 30mDelta

Tue 30/1217:20BHD - LAX

1 stop26h 25mDelta

Deal found 14/12£1,175

Wed 24/1221:00LAX - BHD

1 stop29h 20mAer Lingus

Tue 30/1206:35BHD - LAX

1 stop17h 15mAer Lingus

Deal found 14/12£1,227

Wed 24/1210:53SJC - BHD

2 stops36h 37mBritish Airways

Tue 30/1219:25BHD - SJC

2 stops35h 14mBritish Airways

Deal found 16/12£1,258

Wed 24/1215:01OAK - BHD

2 stops32h 29mBritish Airways

Tue 30/1219:25BHD - OAK

2 stops32h 27mBritish Airways

Deal found 16/12£1,265

Wed 24/1212:50SFO - BFS

1 stop35h 30mMultiple Airlines

Tue 30/1206:00BFS - SFO

1 stop19h 00mMultiple Airlines

Deal found 16/12£1,362

Wed 24/1212:50SFO - BHD

1 stop34h 40mMultiple Airlines

Tue 30/1206:35BHD - SFO

1 stop18h 25mMultiple Airlines

Deal found 16/12£1,401

Wed 24/1212:45ONT - BHD

2 stops34h 45mBritish Airways

Tue 30/1211:25BHD - ONT

2 stops18h 27mBritish Airways

Deal found 14/12£1,625

Tue 23/1219:17SJC - BHD

2 stops58h 43mAmerican Airlines

Sun 4/106:30BHD - SJC

2 stops35h 33mAmerican Airlines

Deal found 14/12£1,634

Tue 23/1206:00SJC - BHD

2 stops21h 30mFinnair

Sun 4/112:10BHD - SJC

2 stops41h 03mFinnair

Deal found 15/12£1,644

Tue 23/1210:10SFO - BHD

2 stops17h 20mFinnair

Sun 4/112:10BHD - SFO

2 stops39h 34mFinnair

Deal found 15/12£1,644

Mon 22/1206:00SJC - BHD

2 stops45h 30mFinnair

Sun 4/112:10BHD - SJC

2 stops41h 03mFinnair

Deal found 15/12£1,652

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 17 December 2025.

Wed 25/218:00LAX - BHD

1 stop14h 35mBritish Airways

Wed 11/306:35BHD - LAX

1 stop14h 55mBritish Airways

Deal found 14/12£448

Mon 12/120:40SFO - BHD

1 stop13h 55mMultiple Airlines

Tue 27/108:45BHD - SFO

2 stops20h 52mMultiple Airlines

Deal found 16/12£489

Mon 2/211:55SFO - BHD

2 stops18h 20mAmerican Airlines

Thu 19/209:05BHD - SFO

2 stops18h 42mAmerican Airlines

Deal found 15/12£490

Mon 12/109:50SFO - BHD

2 stops23h 00mDelta

Tue 27/117:20BHD - SFO

1 stop26h 30mDelta

Deal found 16/12£498

Fri 23/121:00LAX - BHD

1 stop14h 15mBritish Airways

Tue 3/210:00BHD - LAX

1 stop13h 50mBritish Airways

Deal found 15/12£451

Tue 13/117:30SFO - BHD

1 stop13h 20mBritish Airways

Tue 20/106:35BHD - SFO

1 stop16h 25mBritish Airways

Deal found 14/12£463

Sun 11/106:30LAX - BHD

2 stops19h 50mBritish Airways

Sun 18/117:35BHD - LAX

1 stop32h 55mBritish Airways

Deal found 14/12£463

Fri 30/120:15LAX - BFS

2 stops17h 45mMultiple Airlines

Fri 6/208:05BFS - LAX

2 stops18h 25mMultiple Airlines

Deal found 16/12£598

Mon 2/217:30SFO - BHD

1 stop17h 05mBritish Airways

Thu 19/209:05BHD - SFO

1 stop13h 55mBritish Airways

Deal found 15/12£464

Mon 12/120:40SFO - BHD

1 stop15h 35mBritish Airways

Tue 27/108:45BHD - SFO

1 stop14h 15mBritish Airways

Deal found 16/12£466

Sun 11/108:20LAX - BFS

3 stops28h 00mMultiple Airlines

Sun 18/123:05BFS - LAX

3 stops47h 55mMultiple Airlines

Deal found 14/12£668

Wed 11/215:30LAX - BHD

1 stop14h 45mBritish Airways

Sun 15/220:25BHD - LAX

1 stop30h 05mBritish Airways

Deal found 13/12£466

Mon 12/116:30SFO - BFS

1 stop15h 45mMultiple Airlines

Tue 27/105:45BFS - SFO

2 stops46h 25mMultiple Airlines

Deal found 16/12£674

Mon 19/117:30SFO - BHD

1 stop14h 35mBritish Airways

Sun 25/106:30BHD - SFO

1 stop16h 30mBritish Airways

Deal found 16/12£485

Mon 2/212:50SJC - BHD

2 stops19h 15mBritish Airways

Thu 19/220:00BHD - SJC

2 stops34h 26mBritish Airways

Deal found 15/12£485

Tue 26/507:30SFO - BFS

3 stops31h 15mMultiple Airlines

Tue 2/607:00BFS - SFO

3 stops39h 35mMultiple Airlines

Deal found 15/12£748

Tue 13/112:50SJC - BHD

2 stops19h 55mBritish Airways

Tue 20/119:25BHD - SJC

2 stops34h 04mBritish Airways

Deal found 14/12£485

Tue 9/616:45SFO - BFS

1 stop22h 35mMultiple Airlines

Tue 16/622:30BFS - SFO

1 stop23h 05mMultiple Airlines

Deal found 15/12£795

Wed 25/211:35LAX - BFS

1 stop18h 35mMultiple Airlines

Wed 11/321:00BFS - LAX

2 stops29h 05mMultiple Airlines

Deal found 14/12£799

Wed 11/210:58ONT - BHD

2 stops21h 37mBritish Airways

Sun 15/209:10BHD - ONT

2 stops21h 39mBritish Airways

Deal found 13/12£626

Wed 4/215:09ONT - BHD

2 stops20h 01mBritish Airways

Sun 8/217:35BHD - ONT

2 stops34h 35mBritish Airways

Deal found 13/12£626

Wed 8/412:55SJC - BHD

2 stops18h 40mBritish Airways

Mon 13/406:40BHD - SJC

2 stops20h 00mBritish Airways

Deal found 13/12£637

Thu 29/111:43OAK - BHD

2 stops20h 57mBritish Airways

Mon 2/209:15BHD - OAK

2 stops39h 08mBritish Airways

Deal found 14/12£663

Wed 11/214:32SJC - BHD

2 stops18h 03mBritish Airways

Sun 15/209:10BHD - SJC

2 stops21h 16mBritish Airways

Deal found 13/12£663

Thu 5/214:32SJC - BHD

2 stops18h 08mBritish Airways

Mon 9/219:25BHD - SJC

2 stops35h 10mBritish Airways

Deal found 13/12£663

Tue 26/509:50SJC - BHD

2 stops25h 05mBritish Airways

Tue 2/609:35BHD - SJC

2 stops18h 50mBritish Airways

Deal found 15/12£666

Sun 28/1206:15SJC - BFS

2 stops23h 55mMultiple Airlines

Wed 31/1214:35BFS - SJC

3 stops32h 51mMultiple Airlines

Deal found 15/12£1,979

Tue 9/614:31OAK - BHD

2 stops18h 59mBritish Airways

Tue 16/609:35BHD - OAK

2 stops20h 31mBritish Airways

Deal found 15/12£840

Last-minute flights from California to Belfast
Discover last-minute flight deals from California to Belfast. Data last updated 17 December 2025 and is based on user searches.

Sun 11/120:55LAX - BHD

1 stop15h 20mBritish Airways

Sun 18/112:10BHD - LAX

1 stop14h 20mBritish Airways

Deal found 14/12£502

Sun 11/118:00LAX - BHD

1 stop16h 40mAmerican Airlines

Sun 18/106:30BHD - LAX

1 stop21h 55mAmerican Airlines

Deal found 14/12£521

Sun 11/108:20LAX - BFS

3 stops28h 00mMultiple Airlines

Sun 18/123:05BFS - LAX

3 stops47h 55mMultiple Airlines

Deal found 14/12£668

Mon 12/120:40SFO - BHD

1 stop15h 35mBritish Airways

Tue 27/108:45BHD - SFO

1 stop14h 15mBritish Airways

Deal found 16/12£466

Mon 12/120:40SFO - BHD

1 stop13h 55mMultiple Airlines

Tue 27/108:45BHD - SFO

2 stops20h 52mMultiple Airlines

Deal found 16/12£489

Mon 12/109:50SFO - BHD

2 stops23h 00mDelta

Tue 27/117:20BHD - SFO

1 stop26h 30mDelta

Deal found 16/12£498

Tue 13/117:30SFO - BHD

1 stop13h 20mBritish Airways

Tue 20/106:35BHD - SFO

1 stop16h 25mBritish Airways

Deal found 14/12£463

Tue 13/112:50SJC - BHD

2 stops19h 55mBritish Airways

Tue 20/119:25BHD - SJC

2 stops34h 04mBritish Airways

Deal found 14/12£485

Mon 19/117:30SFO - BHD

1 stop14h 35mBritish Airways

Sun 25/106:30BHD - SFO

1 stop16h 30mBritish Airways

Deal found 16/12£485

Fri 23/121:00LAX - BHD

1 stop14h 15mBritish Airways

Tue 3/206:35BHD - LAX

1 stop14h 55mBritish Airways

Deal found 14/12£448

Thu 29/111:43OAK - BHD

2 stops20h 57mBritish Airways

Mon 2/209:15BHD - OAK

2 stops39h 08mBritish Airways

Deal found 14/12£663

Fri 30/120:15LAX - BFS

2 stops17h 45mMultiple Airlines

Fri 6/208:05BFS - LAX

2 stops18h 25mMultiple Airlines

Deal found 16/12£598

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 17 December 2025.

Sat 31/118:44LAX - BHD

3 stops58h 51mMultiple Airlines

Deal found 15/12£204

Tue 27/107:00LAX - BFS

2 stops27h 50mMultiple Airlines

Deal found 14/12£207

Fri 30/112:15LAX - BFS

2 stops39h 45mMultiple Airlines

Deal found 15/12£207

Sun 25/107:00LAX - BFS

2 stops42h 05mMultiple Airlines

Deal found 14/12£208

Wed 28/111:50LAX - BFS

3 stops35h 35mMultiple Airlines

Deal found 14/12£214

Sun 1/219:07LAX - BHD

3 stops34h 28mMultiple Airlines

Deal found 15/12£216

Wed 28/107:00LAX - BHD

2 stops28h 20mMultiple Airlines

Deal found 14/12£217

Mon 26/107:00LAX - BHD

2 stops28h 55mMultiple Airlines

Deal found 14/12£228

Sat 31/107:00LAX - BFS

3 stops30h 40mMultiple Airlines

Deal found 14/12£228

Thu 29/107:00LAX - BFS

2 stops30h 05mMultiple Airlines

Deal found 15/12£229

Sun 1/208:20LAX - BFS

3 stops29h 35mMultiple Airlines

Deal found 15/12£230

Thu 29/111:50LAX - BHD

3 stops23h 45mMultiple Airlines

Deal found 14/12£231

Find flight deals from California to Belfast

Round-trip from	£448
One-way from	£204
Popular in	June
Cheapest in	October
Average price	£819

British Airways
23/1-3/2
2 total stops
29h 10m total
California to Belfast

Search Deals

31/1
3 total stops
58h 51m total
California to Belfast

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 25/2

18:00-16:35

1 stop14h 35m

Belfast City

Wed 11/3

06:35-14:30

1 stop14h 55m

£448

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Fri 23/1

21:00-19:15

1 stop14h 15m

Belfast City

Tue 3/2

10:00-15:50

1 stop13h 50m

£451

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Tue 13/1

17:30-14:50

1 stop13h 20m

Belfast City

Tue 20/1

06:35-15:00

1 stop16h 25m

£463

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 11/1

06:30-10:20

2 stops19h 50m

Belfast City

Sun 18/1

17:35-18:30

1 stop32h 55m

£463

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 2/2

17:30-18:35

1 stop17h 05m

Belfast City

Thu 19/2

09:05-15:00

1 stop13h 55m

£464

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 12/1

20:40-20:15

1 stop15h 35m

Belfast City

Tue 27/1

08:45-15:00

1 stop14h 15m

£466

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Wed 11/2

15:30-14:15

1 stop14h 45m

Belfast City

Sun 15/2

20:25-18:30

1 stop30h 05m

£466

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 19/1

17:30-16:05

1 stop14h 35m

Belfast City

Sun 25/1

06:30-15:00

1 stop16h 30m

£485

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Mon 2/2

12:50-16:05

2 stops19h 15m

Belfast City

Thu 19/2

20:00-22:26

2 stops34h 26m

£485

San JoseBelfast

SJC - BHD

SJCBHD

San Jose

Tue 13/1

12:50-16:45

2 stops19h 55m

Belfast City

Tue 20/1

19:25-21:29

2 stops34h 04m

£485

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 54 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, March is the cheapest month in which you can book a flight from California to Belfast (average of £437). Flying from California to Belfast in June is currently the most expensive (average of £692). 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?

One of the essential ways to save on airfare from California to Belfast is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at midday could potentially save you up to 25% on airfare.

Related info for your journey

How long is the flight from California to Belfast?
For as low as £448, British Airways can have you in Belfast from California in 14h 35m. The distance from California to Belfast is about 5128 mi.
What are the most popular routes from California to Belfast?
While some choose either San Francisco - Belfast City or Oakland - Belfast City, San Francisco - 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, March is the cheapest month in which you can book a flight from California to Belfast (average of £437). Flying from California to Belfast in June is currently the most expensive (average of £692). 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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Cheap flights from California to Belfast from £204

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 31/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 17 December 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 17 December 2025.

Find flight deals from California to Belfast

Keep the following information in mind while searching for California to Belfast flight deals. Data was last updated 17 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 17 December 2025.

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?

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 17 December 2025.