How long is the flight from Northern Ireland to California?

There are many flights that can get you from Northern Ireland to California in 16h 20m. Fly via British Airways to get the fastest option. Northern Ireland and California are separated by a distance of 5038 mi.

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.

£314+ 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 19 September 2026.

Thu 12/1114:30 -

2 stops34h 05m

Sun 15/1119:30 -

2 stops17h 55m

Deal found 18/9£490

Mon 2/1114:35 -

2 stops32h 15m

Mon 9/1116:45 -

2 stops21h 35m

Deal found 18/9£502

Fri 30/1006:30 -

1 stop21h 55m

Wed 4/1109:44 -

2 stops19h 46m

Deal found 16/9£522

Fri 30/1007:20 -

1 stop21h 05m

Wed 4/1113:29 -

2 stops21h 31m

Deal found 16/9£522

Thu 12/1106:30 -

1 stop14h 55m

Sun 15/1120:50 -

1 stop15h 20m

Deal found 18/9£543

Mon 23/1106:35 -

1 stop16h 20m

Tue 8/1213:42 -

2 stops19h 03m

Deal found 18/9£543

Thu 24/906:30 -

1 stop21h 45m

Mon 28/916:30 -

1 stop15h 00m

Deal found 17/9£543

Thu 5/1108:50 -

2 stops21h 42m

Sun 8/1116:32 -

2 stops18h 18m

Deal found 19/9£544

Thu 29/1006:30 -

1 stop16h 25m

Mon 2/1108:55 -

2 stops17h 55m

Deal found 16/9£544

Thu 29/1006:30 -

1 stop16h 40m

Thu 5/1112:36 -

2 stops16h 09m

Deal found 14/9£546

Tue 13/1012:40 -

2 stops18h 57m

Tue 20/1009:12 -

2 stops17h 33m

Deal found 15/9£546

Tue 13/1012:40 -

2 stops20h 04m

Wed 21/1016:35 -

1 stop15h 05m

Deal found 18/9£547

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 19 September 2026.

Thu 12/1114:30 -

2 stops34h 05m

Sun 15/1119:30 -

2 stops17h 55m

Deal found 18/9£490

Mon 23/1106:35 -

1 stop16h 20m

Tue 8/1217:25 -

1 stop13h 25m

Deal found 18/9£543

Thu 12/1117:15 -

2 stops31h 34m

Sun 15/1106:00 -

2 stops19h 10m

Deal found 18/9£555

Tue 6/1009:50 -

1 stop34h 00m

Sun 11/1017:05 -

2 stops15h 50m

Deal found 18/9£578

Mon 2/1114:35 -

2 stops32h 15m

Mon 9/1116:45 -

2 stops21h 35m

Deal found 18/9£502

Thu 5/1108:50 -

2 stops21h 42m

Sun 8/1116:32 -

2 stops18h 18m

Deal found 19/9£544

Thu 29/1008:50 -

1 stop14h 20m

Thu 5/1115:30 -

1 stop14h 35m

Deal found 14/9£546

Tue 3/1115:55 -

2 stops33h 05m

Tue 10/1119:30 -

2 stops18h 40m

Deal found 19/9£567

Thu 12/1111:05 -

2 stops19h 53m

Sun 15/1118:00 -

1 stop14h 50m

Deal found 18/9£547

Thu 29/1006:30 -

1 stop16h 25m

Mon 2/1117:25 -

1 stop16h 00m

Deal found 16/9£575

Thu 15/1014:20 -

2 stops18h 49m

Mon 19/1019:26 -

2 stops17h 09m

Deal found 16/9£548

Thu 29/1014:40 -

2 stops30h 20m

Thu 5/1113:50 -

2 stops20h 55m

Deal found 14/9£578

Thu 19/1106:30 -

1 stop16h 25m

Sun 22/1117:25 -

1 stop17h 25m

Deal found 16/9£573

Thu 15/1009:50 -

2 stops20h 53m

Mon 19/1011:56 -

2 stops37h 24m

Deal found 16/9£863

Fri 30/1008:35 -

1 stop18h 15m

Wed 4/1114:50 -

2 stops15h 45m

Deal found 18/9£608

Thu 12/1106:30 -

2 stops24h 02m

Sun 15/1116:32 -

2 stops16h 18m

Deal found 18/9£574

Thu 21/120:00 -

2 stops27h 35m

Mon 25/117:25 -

1 stop16h 00m

Deal found 18/9£574

Thu 15/1021:35 -

2 stops26h 00m

Mon 19/1018:40 -

2 stops18h 15m

Deal found 16/9£644

Thu 28/111:05 -

1 stop17h 10m

Sun 31/118:25 -

1 stop14h 25m

Deal found 18/9£580

Tue 3/1116:45 -

2 stops28h 25m

Tue 10/1116:10 -

2 stops20h 45m

Deal found 19/9£665

Thu 21/120:00 -

1 stop27h 20m

Mon 25/120:50 -

1 stop13h 45m

Deal found 16/9£580

Wed 27/106:35 -

2 stops24h 42m

Sun 31/114:17 -

2 stops20h 33m

Deal found 18/9£584

Mon 2/1108:30 -

2 stops30h 50m

Mon 9/1121:05 -

1 stop30h 05m

Deal found 17/9£762

Thu 28/111:05 -

2 stops20h 12m

Sun 31/110:40 -

2 stops24h 10m

Deal found 14/9£586

Fri 30/1006:15 -

2 stops38h 28m

Wed 4/1122:20 -

1 stop30h 10m

Deal found 18/9£765

Sun 7/206:30 -

2 stops21h 29m

Thu 11/211:50 -

2 stops16h 55m

Deal found 18/9£599

Thu 29/1017:20 -

2 stops34h 50m

Mon 2/1116:40 -

1 stop19h 15m

Deal found 16/9£790

Fri 30/1008:35 -

1 stop18h 15m

Fri 6/1108:58 -

2 stops17h 57m

Deal found 17/9£612

Tue 13/1017:10 -

2 stops29h 25m

Tue 20/1006:00 -

3 stops31h 20m

Deal found 15/9£813

Fri 30/1017:45 -

1 stop33h 05m

Wed 4/1120:55 -

1 stop14h 10m

Deal found 16/9£643

Find flight deals from Northern Ireland to California

Round-trip from	£481
One-way from	£314

3/11-10/11
4 total stops
52h 20m total
Northern Ireland to California

Search Deals

23/11-31/12
3 total stops
50h 00m 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

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 23/11

20:50-14:50

3 stops50h 00m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£314

BelfastLos Angeles

BFS Belfast Intl - LAX Los Angeles

BFSLAX

Belfast Intl

Thu 8/10

08:10-08:20

3 stops32h 10m

Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£384

BelfastLos Angeles

BFS Belfast Intl - LAX Los Angeles

BFSLAX

Belfast Intl

Wed 7/10

20:15-08:20

3 stops44h 05m

Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£418

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 23/11

06:35-14:55

1 stop16h 20m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£428

BelfastLos Angeles

BFS Belfast Intl - LAX Los Angeles

BFSLAX

Belfast Intl

Thu 12/11

14:30-16:35

2 stops34h 05m

Los Angeles

Sun 15/11

19:30-21:25

2 stops17h 55m

£490

BelfastSan Francisco

BFS Belfast Intl - SFO San Francisco

BFSSFO

Belfast Intl

Mon 2/11

14:35-14:50

2 stops32h 15m

San Francisco

Mon 9/11

16:45-22:20

2 stops21h 35m

£502

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Wed 7/10

16:30-18:25

3 stops33h 55m

Los Angeles

Wed 31/12

00:00-09:00

Nonstop0h 00m

£505

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Mon 23/11

06:35-14:55

1 stop16h 20m

San Francisco

Tue 8/12

17:25-14:50

1 stop13h 25m

£543

BelfastSanta Ana

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

BHDSNA

Belfast City

Thu 5/11

08:50-22:32

2 stops21h 42m

Santa Ana J. Wayne/Orange Cnty

Sun 8/11

16:32-18:50

2 stops18h 18m

£544

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 29/10

08:50-16:10

1 stop14h 20m

Los Angeles

Thu 5/11

15:30-14:05

1 stop14h 35m

£546

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 45 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-LAS

BHD-LAX

BHD-SFO

BFS-LAX

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-LAS

BHD-LAX

BHD-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

8,228 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

8,228 reviews

British Airways

6.7

Okay

8,228 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 16h 20m. Fly via British Airways to get the fastest option. Northern Ireland and California are separated by a distance of 5038 mi.
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

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Popular flights

Return Flight Options

Top destinations

Alternative routes for Northern Ireland to California

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Edinburgh to Newark flights

Gatwick to Fort Lauderdale flights

Top airline flying from Northern Ireland to California

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£453	Average£646	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 £314

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/11. 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 19 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 19 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 19 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 19 September 2026.

Last-minute flights from Northern Ireland to CaliforniaDiscover last-minute flight deals from Northern Ireland to California. Data last updated 19 September 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to California. Data last updated 19 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 19 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 19 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 19 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 19 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 19 September 2026.

Last-minute flights from Northern Ireland to California
Discover last-minute flight deals from Northern Ireland to California. Data last updated 19 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 19 September 2026.