How long is the flight from Northern Ireland to California?

There are many flights that can get you from Northern Ireland to California in 15h 15m. Fly via British Airways, Delta, or American Airlines to get the fastest option. Northern Ireland and California are separated by a distance of 4902 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 is the cheapest time of day to fly from NIR to CA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to California as you normally would.

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

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

How can I find direct flights from Northern Ireland to California?

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

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

Yes. Cheapflights offers flight deals from Northern Ireland 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.

£328+ Cheap Flights from Northern Ireland to California

Cheap flight deals from Northern Ireland to California

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Northern Ireland to California
Explore the most affordable flight options available from Northern Ireland to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2026.

Wed 7/1008:50 -

3 stops38h 25m

Wed 14/1006:50 -

3 stops26h 40m

Deal found 27/8£527

Sat 21/1106:35 -

2 stops20h 16m

Mon 30/1118:00 -

1 stop15h 25m

Deal found 27/8£546

Tue 3/1108:45 -

2 stops32h 55m

Wed 11/1114:22 -

2 stops18h 33m

Deal found 27/8£546

Sat 21/1117:15 -

1 stop26h 30m

Mon 30/1113:50 -

1 stop19h 00m

Deal found 27/8£563

Thu 24/906:40 -

2 stops16h 44m

Thu 1/1008:30 -

2 stops26h 25m

Deal found 27/8£567

Thu 24/909:50 -

2 stops22h 44m

Thu 1/1010:29 -

2 stops22h 26m

Deal found 27/8£567

Mon 12/1009:40 -

1 stop36h 10m

Mon 19/1019:30 -

1 stop17h 05m

Deal found 27/8£570

Thu 5/1107:40 -

2 stops19h 30m

Sun 8/1114:53 -

2 stops19h 57m

Deal found 28/8£574

Wed 7/1010:05 -

1 stop17h 55m

Wed 14/1016:57 -

2 stops17h 48m

Deal found 27/8£587

Sun 27/917:30 -

2 stops32h 30m

Wed 21/1017:10 -

2 stops15h 45m

Deal found 28/8£618

Thu 10/917:30 -

1 stop33h 05m

Sun 13/920:25 -

1 stop28h 55m

Deal found 28/8£629

Sat 21/1111:45 -

2 stops19h 00m

Mon 30/1120:50 -

1 stop15h 20m

Deal found 24/8£637

Best flights from Northern Ireland to California
Discover carefully curated flight deals from Northern Ireland to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Tue 3/1108:45 -

2 stops32h 55m

Wed 11/1114:22 -

2 stops18h 33m

Deal found 27/8£546

Thu 24/909:50 -

2 stops22h 44m

Thu 1/1010:29 -

2 stops22h 26m

Deal found 27/8£567

Mon 12/1009:40 -

1 stop36h 10m

Mon 19/1019:30 -

1 stop17h 05m

Deal found 27/8£570

Sat 26/916:15 -

1 stop27h 30m

Sat 10/1011:40 -

2 stops16h 45m

Deal found 26/8£654

Thu 8/1012:45 -

1 stop15h 15m

Mon 12/1012:17 -

2 stops16h 38m

Deal found 25/8£711

Thu 8/1017:30 -

1 stop33h 05m

Mon 12/1020:25 -

1 stop12h 30m

Deal found 25/8£739

Thu 5/1107:40 -

2 stops19h 30m

Sun 8/1114:53 -

2 stops19h 57m

Deal found 28/8£574

Thu 25/217:20 -

1 stop26h 25m

Mon 8/310:45 -

2 stops22h 05m

Deal found 29/8£585

Wed 7/1009:45 -

3 stops37h 30m

Wed 14/1019:15 -

2 stops19h 05m

Deal found 27/8£587

Thu 12/1111:05 -

2 stops19h 27m

Sun 15/1112:40 -

2 stops20h 10m

Deal found 28/8£574

Thu 25/217:20 -

1 stop26h 25m

Thu 11/313:50 -

1 stop19h 00m

Deal found 29/8£585

Thu 21/111:05 -

1 stop15h 40m

Mon 25/107:04 -

2 stops19h 46m

Deal found 28/8£577

Thu 25/217:20 -

1 stop26h 25m

Tue 9/313:50 -

1 stop35h 20m

Deal found 29/8£585

Sat 21/1109:20 -

1 stop19h 00m

Mon 30/1118:30 -

1 stop16h 05m

Deal found 24/8£660

Sat 26/906:20 -

2 stops18h 10m

Sat 10/1019:35 -

2 stops19h 05m

Deal found 26/8£671

Thu 28/111:05 -

1 stop17h 10m

Sun 31/118:25 -

1 stop14h 25m

Deal found 28/8£624

Thu 25/217:20 -

1 stop26h 25m

Wed 10/307:00 -

2 stops18h 10m

Deal found 29/8£633

Thu 21/111:05 -

1 stop17h 10m

Mon 25/118:25 -

1 stop17h 45m

Deal found 27/8£624

Sat 3/1022:25 -

2 stops31h 57m

Thu 8/1006:50 -

3 stops28h 05m

Deal found 28/8£721

Tue 22/909:50 -

2 stops22h 01m

Tue 29/910:29 -

2 stops22h 26m

Deal found 25/8£674

Wed 27/111:40 -

2 stops18h 21m

Sun 31/112:43 -

2 stops22h 07m

Deal found 28/8£627

Thu 1/1020:40 -

2 stops50h 57m

Mon 5/1022:00 -

1 stop17h 20m

Deal found 26/8£730

Thu 28/111:05 -

2 stops19h 40m

Sun 31/110:31 -

2 stops24h 19m

Deal found 28/8£627

Sun 11/1016:30 -

2 stops29h 35m

Sun 18/1006:00 -

2 stops28h 25m

Deal found 27/8£730

Tue 26/118:15 -

1 stop29h 00m

Sat 30/120:55 -

1 stop15h 30m

Deal found 28/8£645

Thu 8/1006:40 -

3 stops23h 00m

Mon 12/1017:50 -

2 stops21h 15m

Deal found 25/8£744

Sun 4/1021:25 -

2 stops32h 57m

Wed 28/1007:20 -

3 stops29h 25m

Deal found 29/8£756

Thu 1/1009:35 -

2 stops19h 12m

Mon 5/1017:20 -

2 stops18h 05m

Deal found 26/8£714

Thu 10/921:40 -

2 stops28h 55m

Sun 13/920:25 -

2 stops19h 10m

Deal found 28/8£760

Thu 21/111:05 -

1 stop15h 45m

Mon 25/114:22 -

2 stops17h 43m

Deal found 28/8£748

Find flight deals from Northern Ireland to California

Round-trip from	£527
One-way from	£328

7/10-14/10
6 total stops
65h 05m total
Northern Ireland to California

Search Deals

15/10
2 total stops
40h 40m total
Northern Ireland to California

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastOntario

BHD Belfast City - ONT Ontario

BHDONT

Belfast City

Tue 3/11

08:45-09:40

2 stops32h 55m

Ontario

Wed 11/11

14:22-16:55

2 stops18h 33m

£546

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 24/9

09:50-00:34

2 stops22h 44m

San Francisco

Thu 1/10

10:29-16:55

2 stops22h 26m

£567

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 12/10

09:40-13:50

1 stop36h 10m

San Francisco

Mon 19/10

19:30-20:35

1 stop17h 05m

£570

BelfastSanta Ana

BHD Belfast City - SNA Santa Ana J. Wayne/Orange Cnty

BHDSNA

Belfast City

Thu 5/11

07:40-19:10

2 stops19h 30m

Santa Ana J. Wayne/Orange Cnty

Sun 8/11

14:53-18:50

2 stops19h 57m

£574

BelfastSanta Ana

BHD Belfast City - SNA Santa Ana J. Wayne/Orange Cnty

BHDSNA

Belfast City

Thu 12/11

11:05-22:32

2 stops19h 27m

Santa Ana J. Wayne/Orange Cnty

Sun 15/11

12:40-16:50

2 stops20h 10m

£574

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 21/1

11:05-18:45

1 stop15h 40m

San Francisco

Mon 25/1

07:04-10:50

2 stops19h 46m

£577

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 25/2

17:20-11:45

1 stop26h 25m

Los Angeles

Mon 8/3

10:45-16:50

2 stops22h 05m

£585

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 25/2

17:20-11:45

1 stop26h 25m

Los Angeles

Thu 11/3

13:50-16:50

1 stop19h 00m

£585

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 25/2

17:20-11:45

1 stop26h 25m

Los Angeles

Tue 9/3

13:50-09:10

1 stop35h 20m

£585

BelfastLas Vegas

BFS Belfast Intl - LAS Las Vegas Harry Reid Intl

BFSLAS

Belfast Intl

Wed 7/10

09:45-15:15

3 stops37h 30m

Las Vegas Harry Reid Intl

Wed 14/10

19:15-22:20

2 stops19h 05m

£587

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 37 resultsSorted by cheapest first

Best time to book a flight from Northern Ireland to California

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

BFS-LAS

BHD-LAX

BHD-ONT

BFS-SFO

BHD-SFO

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 Northern Ireland to California

GBNIR-USCA

BFS-LAS

BHD-LAX

BHD-ONT

BFS-SFO

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing California

Read through reviews of airlines operating flights from Northern Ireland to California, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

8,193 reviews

Check prices

Reviews

1 / 20

6.0

Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

British Airways

6.7

Okay

8,193 reviews

British Airways

6.7

Okay

8,193 reviews

Check prices

Reviews

1 / 20

6.0

Good

Roxanne,Sept 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

How long is the flight from Northern Ireland to California?
There are many flights that can get you from Northern Ireland to California in 15h 15m. Fly via British Airways, Delta, or American Airlines to get the fastest option. Northern Ireland and California are separated by a distance of 4902 mi. This flight may include one or multiple stops.
Can I find deals for flights from Northern Ireland to California that include hotel bookings?
Yes. In addition to deals on Northern Ireland to California flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to California?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to California.
Can I find deals for business class flights from Northern Ireland to California?
Yes. Cheapflights offers flight deals from Northern Ireland 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

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Flights by cabin class

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Popular flights

Return Flight Options

Top destinations

Alternative routes for Northern Ireland to California

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Top airline flying from Northern Ireland to California

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£447	Average£630	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Northern Ireland to California?

Cheapflights makes it easy to find Northern Ireland to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to California by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Need flexible booking options for your flight to California from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Northern Ireland to California flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Northern Ireland to California from £328

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Northern Ireland to California

Cheapest flights from Northern Ireland to CaliforniaExplore the most affordable flight options available from Northern Ireland to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2026.

Explore the most affordable flight options available from Northern Ireland to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2026.

Best flights from Northern Ireland to CaliforniaDiscover carefully curated flight deals from Northern Ireland to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Discover carefully curated flight deals from Northern Ireland to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Last-minute flights from Northern Ireland to CaliforniaDiscover last-minute flight deals from Northern Ireland to California. Data last updated 29 August 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to California. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Northern Ireland to CaliforniaSearch for one-way flight options from Northern Ireland to California. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Search for one-way flight options from Northern Ireland to California. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.

Find flight deals from Northern Ireland to California

Round-trip from

One-way from

Cheapflights Fare Finder

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

Best time to book a flight from Northern Ireland to California

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

Cheapflights Insights

Reviews of airlines servicing California

Read through reviews of airlines operating flights from Northern Ireland to California, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Northern Ireland to California?

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

How can I find direct flights from Northern Ireland to California?

Can I find deals for business class flights from Northern Ireland 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 Northern Ireland to California

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

Complete your trip

Complete your trip to California by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to United States

Book a non-stop flight to one of these other cities located in United States.

Search flights from Northern Ireland to California by cabin class

Find flights from Northern Ireland to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Northern Ireland and California flights

Browse other Northern Ireland and California flight options. Last updated on 29 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Find a return flight route from California

Find the right flight back to Northern Ireland after your stay in California

Northern Ireland to California flights

Consider these flights travelling from Northern Ireland to California.

Top airline flying from Northern Ireland to California

Fly with Cheapflights

How does Cheapflights help users find flights from Northern Ireland to California?

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

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

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

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Travel Smart

Cheapest flights from Northern Ireland to California
Explore the most affordable flight options available from Northern Ireland to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2026.

Best flights from Northern Ireland to California
Discover carefully curated flight deals from Northern Ireland to California that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2026.

Last-minute flights from Northern Ireland to California
Discover last-minute flight deals from Northern Ireland to California. Data last updated 29 August 2026 and is based on user searches.

One-way flights from Northern Ireland to California
Search for one-way flight options from Northern Ireland to California. Find affordable one-way fares based on user searches. Data last updated 29 August 2026.