How long is the flight from Northern Ireland to California?

There are many flights that can get you from Northern Ireland to California in 14h 50m. Fly via British Airways, KLM, or Delta to get the fastest option. Northern Ireland and California are separated by a distance of 5128 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 4 September 2026.

Fri 2/1006:15 -

1 stop17h 50m

Sun 18/1019:45 -

1 stop18h 50m

Deal found 31/8£477

Fri 2/1006:15 -

1 stop17h 50m

Sat 17/1019:45 -

1 stop19h 40m

Deal found 31/8£489

Sat 21/1111:45 -

1 stop14h 50m

Mon 30/1115:30 -

1 stop14h 45m

Deal found 3/9£507

Tue 20/1020:25 -

1 stop25h 25m

Tue 3/1120:35 -

1 stop15h 35m

Deal found 2/9£518

Thu 12/1111:05 -

1 stop17h 10m

Sun 15/1118:00 -

1 stop14h 50m

Deal found 3/9£524

Tue 29/917:30 -

1 stop26h 20m

Tue 6/1016:45 -

1 stop16h 10m

Deal found 1/9£543

Tue 29/908:20 -

2 stops35h 20m

Tue 6/1015:15 -

2 stops21h 50m

Deal found 1/9£544

Tue 20/1012:40 -

2 stops20h 27m

Tue 3/1110:34 -

2 stops16h 56m

Deal found 2/9£545

Tue 29/910:20 -

2 stops33h 20m

Tue 6/1015:15 -

2 stops21h 15m

Deal found 1/9£550

Tue 20/1017:30 -

1 stop26h 15m

Tue 3/1113:50 -

1 stop18h 55m

Deal found 2/9£552

Thu 1/1009:50 -

2 stops22h 32m

Thu 8/1012:05 -

2 stops20h 50m

Deal found 2/9£555

Wed 16/909:50 -

2 stops20h 25m

Wed 23/913:45 -

1 stop19h 10m

Deal found 2/9£557

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 4 September 2026.

Fri 2/1006:15 -

1 stop17h 50m

Sun 18/1019:45 -

1 stop18h 50m

Deal found 31/8£477

Sat 21/1111:45 -

1 stop14h 50m

Mon 30/1115:30 -

1 stop14h 45m

Deal found 3/9£507

Tue 29/917:30 -

1 stop26h 20m

Tue 6/1016:45 -

1 stop16h 10m

Deal found 1/9£543

Tue 20/1017:30 -

1 stop26h 15m

Tue 3/1113:50 -

1 stop18h 55m

Deal found 2/9£552

Wed 16/909:50 -

2 stops20h 25m

Wed 23/913:45 -

1 stop19h 10m

Deal found 2/9£557

Tue 29/908:20 -

2 stops35h 20m

Tue 6/1015:15 -

2 stops21h 50m

Deal found 1/9£544

Thu 1/1009:50 -

2 stops22h 32m

Thu 8/1012:05 -

2 stops20h 50m

Deal found 2/9£555

Thu 21/120:00 -

2 stops27h 35m

Mon 25/114:17 -

2 stops17h 48m

Deal found 3/9£572

Tue 29/910:20 -

2 stops33h 20m

Tue 6/1015:15 -

2 stops21h 15m

Deal found 1/9£550

Thu 12/1106:30 -

2 stops20h 40m

Sun 15/1108:45 -

2 stops21h 05m

Deal found 3/9£574

Sat 21/1109:20 -

1 stop19h 00m

Mon 30/1116:55 -

1 stop16h 30m

Deal found 30/8£573

Thu 5/1108:50 -

2 stops21h 44m

Sun 8/1114:53 -

2 stops19h 57m

Deal found 3/9£574

Thu 21/120:00 -

1 stop27h 20m

Mon 25/120:50 -

1 stop13h 45m

Deal found 3/9£577

Fri 18/921:10 -

2 stops27h 20m

Sun 27/917:30 -

2 stops20h 25m

Deal found 1/9£628

Thu 28/117:50 -

1 stop27h 35m

Sun 31/115:30 -

1 stop14h 20m

Deal found 3/9£577

Wed 27/106:35 -

2 stops24h 42m

Sun 31/114:17 -

2 stops20h 33m

Deal found 2/9£580

Thu 1/1020:20 -

2 stops28h 10m

Fri 9/1015:05 -

2 stops22h 10m

Deal found 1/9£668

Thu 4/207:40 -

1 stop19h 10m

Tue 9/209:38 -

2 stops17h 12m

Deal found 2/9£593

Fri 16/1006:05 -

3 stops24h 17m

Fri 23/1006:50 -

3 stops25h 40m

Deal found 1/9£696

Thu 12/1111:05 -

2 stops18h 48m

Sun 15/1114:22 -

2 stops18h 28m

Deal found 3/9£606

Fri 2/1006:05 -

2 stops18h 10m

Sat 17/1019:35 -

2 stops19h 05m

Deal found 31/8£706

Thu 12/1120:00 -

1 stop30h 50m

Mon 23/1115:24 -

2 stops16h 41m

Deal found 3/9£640

Wed 14/1011:30 -

2 stops35h 00m

Wed 21/1013:00 -

2 stops22h 15m

Deal found 2/9£739

Thu 21/120:00 -

1 stop30h 50m

Mon 25/120:55 -

1 stop15h 15m

Deal found 2/9£644

Tue 20/1010:35 -

3 stops36h 00m

Tue 3/1108:25 -

3 stops24h 55m

Deal found 2/9£767

Tue 26/118:15 -

1 stop29h 00m

Sat 30/120:55 -

1 stop15h 30m

Deal found 2/9£644

Tue 20/1008:50 -

3 stops37h 45m

Tue 27/1008:25 -

3 stops29h 30m

Deal found 4/9£778

Sat 6/206:00 -

2 stops22h 45m

Thu 11/222:20 -

1 stop26h 45m

Deal found 1/9£789

Sat 27/207:00 -

1 stop17h 35m

Mon 8/321:05 -

1 stop15h 55m

Deal found 4/9£816

Thu 1/1006:40 -

3 stops23h 15m

Sun 18/1006:00 -

3 stops23h 05m

Deal found 31/8£832

Find flight deals from Northern Ireland to California

Round-trip from	£477
One-way from	£328

2/10-18/10
2 total stops
36h 40m total
Northern Ireland to California

Search Deals

21/11-31/12
3 total stops
39h 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

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles Los Angeles

BHDLAX

Belfast City

Sat 21/11

09:25-17:05

3 stops39h 40m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£328

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Tue 29/9

20:15-21:55

3 stops57h 40m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£380

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles Los Angeles

BHDLAX

Belfast City

Sat 21/11

06:35-15:15

1 stop16h 40m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£399

BelfastOntario

BHD Belfast City - ONT Ontario

BHDONT

Belfast City

Sat 21/11

11:45-23:59

2 stops20h 14m

Ontario

Wed 31/12

00:00-09:00

Nonstop0h 00m

£406

BelfastLos Angeles

BFS Belfast Intl - LAX Los Angeles Los Angeles

BFSLAX

Belfast Intl

Sat 21/11

10:00-20:20

1 stop18h 20m

Los Angeles Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£407

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Sat 26/12

06:00-11:45

3 stops37h 45m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£428

BelfastLas Vegas

BFS Belfast Intl - LAS Las Vegas Harry Reid Intl

BFSLAS

Belfast Intl

Sun 28/2

08:50-13:37

3 stops36h 47m

Las Vegas Harry Reid Intl

Wed 31/12

00:00-09:00

Nonstop0h 00m

£429

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 26/12

06:35-14:55

1 stop16h 20m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£455

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 26/12

19:40-14:45

3 stops51h 05m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£468

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Fri 2/10

06:15-16:05

1 stop17h 50m

San Francisco

Sun 18/10

19:45-22:35

1 stop18h 50m

£477

Flights are sorted by cheapest return flights first.

Deals found on 3/9

Showing 1-10 of 44 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-SFO

BHD-LAX

BHD-SFO

BFS-LAX

BHD-SNA

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-SFO

BHD-LAX

BHD-SFO

BFS-LAX

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

8,202 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

8,202 reviews

British Airways

6.7

Okay

8,202 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 14h 50m. Fly via British Airways, KLM, or Delta to get the fastest option. Northern Ireland and California are separated by a distance of 5128 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

Direct flights to United States

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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London City to Las Vegas flights

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Heathrow to Nashville flights

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Edinburgh to Newark flights

Luton to Orlando flights

Top airline flying from Northern Ireland to California

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£448	Average£627	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 retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/11. 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 4 September 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 4 September 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 4 September 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 4 September 2026.

Last-minute flights from Northern Ireland to CaliforniaDiscover last-minute flight deals from Northern Ireland to California. Data last updated 4 September 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to California. Data last updated 4 September 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 4 September 2026.

Search for one-way flight options from Northern Ireland to California. Find affordable one-way fares based on user searches. Data last updated 4 September 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 4 September 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 4 September 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 4 September 2026.

Last-minute flights from Northern Ireland to California
Discover last-minute flight deals from Northern Ireland to California. Data last updated 4 September 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 4 September 2026.