How long is the flight from Northern Ireland to California?

There are many flights that can get you from Northern Ireland to California in 20h 57m. Fly via British Airways, Virgin Atlantic, or Delta to get the fastest option. Northern Ireland and California are separated by a distance of 5095 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.

£333+ 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 12 September 2026.

Fri 20/1113:35 -

1 stop14h 45m

Fri 27/1110:35 -

2 stops16h 20m

Deal found 11/9£519

Tue 17/1110:00 -

2 stops20h 57m

Tue 24/1114:09 -

2 stops18h 36m

Deal found 10/9£536

Mon 23/1106:35 -

1 stop16h 20m

Tue 8/1213:42 -

2 stops19h 03m

Deal found 8/9£541

Tue 27/1011:40 -

2 stops19h 17m

Tue 3/1117:25 -

1 stop15h 20m

Deal found 12/9£545

Tue 27/1017:15 -

1 stop26h 30m

Tue 3/1113:50 -

1 stop18h 55m

Deal found 12/9£553

Fri 20/1109:40 -

2 stops45h 20m

Fri 27/1113:15 -

2 stops43h 30m

Deal found 11/9£563

Thu 5/1120:00 -

2 stops27h 47m

Sun 8/1116:32 -

2 stops19h 38m

Deal found 11/9£575

Thu 8/1012:45 -

2 stops18h 52m

Thu 15/1016:10 -

2 stops18h 35m

Deal found 10/9£583

Thu 5/1106:20 -

1 stop22h 05m

Mon 9/1113:30 -

2 stops22h 25m

Deal found 10/9£586

Sat 3/1017:30 -

1 stop33h 05m

Sun 11/1020:25 -

1 stop12h 30m

Deal found 8/9£601

Thu 5/1111:05 -

1 stop15h 45m

Mon 9/1108:54 -

2 stops17h 56m

Deal found 11/9£610

Sat 3/1017:30 -

1 stop33h 05m

Sun 11/1017:10 -

2 stops15h 45m

Deal found 8/9£615

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 12 September 2026.

Tue 17/1110:00 -

2 stops20h 57m

Tue 24/1114:09 -

2 stops18h 36m

Deal found 10/9£536

Tue 27/1017:15 -

1 stop26h 30m

Tue 3/1113:50 -

1 stop18h 55m

Deal found 12/9£553

Thu 5/1106:20 -

1 stop22h 05m

Mon 9/1113:30 -

2 stops22h 25m

Deal found 10/9£586

Sat 3/1017:30 -

2 stops33h 56m

Sun 11/1017:10 -

2 stops15h 45m

Deal found 8/9£619

Thu 5/1111:05 -

1 stop15h 45m

Mon 9/1120:55 -

1 stop33h 55m

Deal found 10/9£648

Mon 23/1106:35 -

1 stop16h 20m

Tue 8/1213:42 -

2 stops19h 03m

Deal found 8/9£541

Fri 20/1109:40 -

2 stops45h 20m

Fri 27/1113:15 -

2 stops43h 30m

Deal found 11/9£563

Fri 20/1113:35 -

2 stops19h 14m

Fri 27/1116:49 -

2 stops18h 21m

Deal found 11/9£545

Thu 5/1109:40 -

2 stops21h 55m

Mon 9/1112:30 -

2 stops20h 15m

Deal found 10/9£620

Tue 27/1011:40 -

2 stops19h 17m

Tue 3/1113:42 -

2 stops17h 08m

Deal found 12/9£545

Thu 22/1017:30 -

2 stops34h 52m

Thu 29/1006:00 -

2 stops20h 10m

Deal found 7/9£633

Fri 20/1121:00 -

2 stops22h 45m

Fri 27/1109:20 -

3 stops28h 50m

Deal found 11/9£749

Thu 21/120:00 -

2 stops27h 35m

Mon 25/117:25 -

1 stop16h 00m

Deal found 11/9£573

Thu 5/1120:00 -

2 stops27h 47m

Sun 8/1116:32 -

2 stops19h 38m

Deal found 11/9£575

Mon 26/1022:05 -

2 stops24h 10m

Mon 2/1115:25 -

2 stops19h 45m

Deal found 11/9£789

Thu 12/1120:00 -

2 stops27h 47m

Sun 15/1113:23 -

2 stops22h 47m

Deal found 11/9£575

Sat 3/1006:20 -

2 stops24h 02m

Sun 11/1018:45 -

1 stop18h 45m

Deal found 8/9£798

Thu 21/111:05 -

1 stop15h 30m

Sun 24/120:50 -

1 stop14h 00m

Deal found 11/9£578

Sat 3/1008:20 -

2 stops22h 03m

Sat 31/1009:59 -

2 stops21h 01m

Deal found 9/9£814

Thu 28/111:05 -

1 stop17h 10m

Sun 31/118:25 -

1 stop14h 25m

Deal found 11/9£578

Thu 21/120:00 -

1 stop27h 20m

Mon 25/120:50 -

1 stop13h 45m

Deal found 8/9£579

Thu 8/1006:10 -

3 stops23h 45m

Thu 15/1016:30 -

3 stops23h 00m

Deal found 10/9£886

Wed 27/106:35 -

2 stops24h 42m

Sun 31/114:17 -

2 stops20h 33m

Deal found 11/9£581

Thu 28/111:05 -

2 stops20h 12m

Sun 31/110:40 -

2 stops24h 10m

Deal found 11/9£581

Tue 26/118:15 -

1 stop29h 00m

Sat 30/120:55 -

1 stop15h 30m

Deal found 11/9£646

Thu 21/120:00 -

1 stop30h 50m

Mon 25/120:55 -

1 stop15h 15m

Deal found 11/9£646

Find flight deals from Northern Ireland to California

Round-trip from	£519
One-way from	£333

British Airways
20/11-27/11
3 total stops
31h 05m total
Northern Ireland to California

Search Deals

30/10-31/12
3 total stops
35h 20m 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

Fri 30/10

08:25-12:45

3 stops35h 20m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£333

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Fri 30/10

07:00-12:45

3 stops36h 45m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£351

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Fri 6/11

07:00-11:45

3 stops36h 45m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£365

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Fri 6/11

06:45-14:55

1 stop16h 10m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£417

BelfastOntario

BHD Belfast City - ONT Ontario

BHDONT

Belfast City

Tue 17/11

10:00-22:57

2 stops20h 57m

Ontario

Tue 24/11

14:09-16:45

2 stops18h 36m

£536

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

13:42-16:45

2 stops19h 03m

£541

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles Los Angeles

BHDLAX

Belfast City

Fri 20/11

13:35-00:49

2 stops19h 14m

Los Angeles Los Angeles

Fri 27/11

16:49-19:10

2 stops18h 21m

£545

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Tue 27/10

11:40-23:57

2 stops19h 17m

San Francisco

Tue 3/11

13:42-14:50

2 stops17h 08m

£545

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Tue 27/10

17:15-12:45

1 stop26h 30m

San Francisco

Tue 3/11

13:50-16:45

1 stop18h 55m

£553

BelfastOntario

BHD Belfast City - ONT Ontario

BHDONT

Belfast City

Fri 20/11

09:40-23:00

2 stops45h 20m

Ontario

Fri 27/11

13:15-16:45

2 stops43h 30m

£563

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 33 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.

BHD-SFO

BHD-LAS

BFS-LAS

BHD-LAX

BHD-ONT

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

BHD-SFO

BHD-LAS

BFS-LAS

BHD-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

8,213 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

8,213 reviews

British Airways

6.7

Okay

8,213 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 20h 57m. Fly via British Airways, Virgin Atlantic, or Delta to get the fastest option. Northern Ireland and California are separated by a distance of 5095 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

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Complete your trip

Direct flights to United States

Flights by cabin class

Other flight options

Popular flights

Return Flight Options

Top destinations

Alternative routes for Northern Ireland to California

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Heathrow to Tampa flights

Luton to Miami flights

Heathrow to Fort Lauderdale flights

Top airline flying from Northern Ireland to California

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£449	Average£633	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 £333

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. 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 12 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 12 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 12 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 12 September 2026.

Last-minute flights from Northern Ireland to CaliforniaDiscover last-minute flight deals from Northern Ireland to California. Data last updated 12 September 2026 and is based on user searches.

Discover last-minute flight deals from Northern Ireland to California. Data last updated 12 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 12 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 12 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 12 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 12 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 12 September 2026.

Last-minute flights from Northern Ireland to California
Discover last-minute flight deals from Northern Ireland to California. Data last updated 12 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 12 September 2026.