What is the cheapest airline that flies from Northern Ireland to California?

British Airways and Aer Lingus are the most popular carriers operating from Northern Ireland to California

Which airlines fly to California?

British Airways, American Airlines and KLM are the top three most popular airlines that fly to California from Northern Ireland according to our data. British Airways is the first choice among our users, with 87% of people opting to fly with this airline when travelling to California. Keep in mind that there are 3 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Northern Ireland to California?

Prices for flights from Northern Ireland to California are refreshed on a daily basis.

How many operators does momondo search for flights from Northern Ireland to California?

As of May 2026, there are 3 operators available to choose from for flights from Northern Ireland to California.

How old do you have to be to fly from Northern Ireland to California?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to California.

What documentation or ID do you need to fly to California?

The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£346 Cheap Flights from Northern Ireland to California in 2026

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Find the cheapest flights from Northern Ireland to California

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:45 - 11:50

BHD

LAX

34h 05m

1 stop

16:45 - 09:20

LAX

BHD

32h 35m

1 stop

£654KLM

Sun, 6 Sep - Wed, 23 Sep

17:30 - 11:50

BHD

LAX

26h 20m

1 stop

17:05 - 16:55

LAX

BHD

15h 50m

2 stops

£658KLM

Sun, 6 Sep - Wed, 23 Sep

10:05 - 22:58

BHD

ONT

20h 53m

2 stops

23:59 - 19:25

ONT

BHD

35h 26m

2 stops

£659British Airways

Wed, 2 Sep - Sun, 6 Sep

10:05 - 22:58

BHD

ONT

20h 53m

2 stops

23:59 - 18:45

ONT

BHD

34h 46m

2 stops

£669British Airways

Wed, 2 Sep - Sun, 6 Sep

06:30 - 13:50

BHD

SFO

15h 20m

1 stop

16:35 - 15:30

SFO

BHD

14h 55m

1 stop

£681British Airways

Mon, 27 Jul - Mon, 24 Aug

21:10 - 21:55

BFS

LAX

32h 45m

2 stops

18:25 - 19:20

LAX

BFS

16h 55m

2 stops

£706Multiple Airlines

Thu, 4 Jun - Thu, 11 Jun

20:20 - 08:20

BFS

LAX

44h 00m

3 stops

16:45 - 20:20

LAX

BFS

19h 35m

2 stops

£713Multiple Airlines

Sun, 6 Sep - Wed, 23 Sep

07:05 - 20:00

BHD

LAS

20h 55m

1 stop

22:10 - 20:35

LAS

BHD

14h 25m

1 stop

£1,021American Airlines

Sat, 6 Jun - Fri, 12 Jun

09:35 - 23:59

BHD

LAS

22h 24m

2 stops

22:47 - 12:25

LAS

BHD

29h 38m

2 stops

£1,025American Airlines

Thu, 4 Jun - Fri, 12 Jun

11:05 - 23:01

BHD

LAS

43h 56m

3 stops

23:51 - 13:50

LAS

BHD

29h 59m

3 stops

£1,255Aer Lingus

Mon, 22 Jun - Sat, 27 Jun

KLM flights from Northern Ireland to California

Our best KLM deals on Northern Ireland to California flight tickets

KLM

6 Sept

BHD09:45Belfast City

34h 05m

1 stop

LAX11:50Los Angeles Los Angeles

23 Sept

LAX16:45Los Angeles Los Angeles

32h 35m

1 stop

BHD09:20Belfast City

£654

KLM

6 Sept

BHD17:30Belfast City

26h 20m

1 stop

LAX11:50Los Angeles Los Angeles

23 Sept

LAX17:05Los Angeles Los Angeles

15h 50m

2 stops

BHD16:55Belfast City

£658

KLM

6 Sept

BHD09:45Belfast City

19h 59m

2 stops

LAX21:44Los Angeles Los Angeles

23 Sept

LAX17:05Los Angeles Los Angeles

15h 50m

2 stops

BHD16:55Belfast City

£694

British Airways flights from Northern Ireland to California

Our best British Airways deals on Northern Ireland to California flight tickets

British Airways

2 Sept

BHD10:05Belfast City

20h 53m

2 stops

ONT22:58Ontario

6 Sept

ONT23:59Ontario

35h 26m

2 stops

BHD19:25Belfast City

£659

British Airways

2 Sept

BHD10:05Belfast City

20h 53m

2 stops

ONT22:58Ontario

6 Sept

ONT23:59Ontario

34h 46m

2 stops

BHD18:45Belfast City

£669

British Airways

27 Jul

BHD06:30Belfast City

15h 20m

1 stop

SFO13:50San Francisco

24 Aug

SFO16:35San Francisco

14h 55m

1 stop

BHD15:30Belfast City

£681

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sun 6/9

09:45-11:50

1 stop34h 05m

Los Angeles Los Angeles

Wed 23/9

16:45-09:20

1 stop32h 35m

£654

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Sun 6/9

17:30-11:50

1 stop26h 20m

Los Angeles Los Angeles

Wed 23/9

17:05-16:55

2 stops15h 50m

£658

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 2/9

10:05-22:58

2 stops20h 53m

Ontario

Sun 6/9

23:59-19:25

2 stops35h 26m

£659

BelfastOntario

BHD - ONT

BHDONT

Belfast City

Wed 2/9

10:05-22:58

2 stops20h 53m

Ontario

Sun 6/9

23:59-18:45

2 stops34h 46m

£669

Fastest return journey

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 27/7

06:30-13:50

1 stop15h 20m

San Francisco

Mon 24/8

16:35-15:30

1 stop14h 55m

£681

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Thu 4/6

21:10-21:55

2 stops32h 45m

Los Angeles Los Angeles

Thu 11/6

18:25-19:20

2 stops16h 55m

£706

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Sun 6/9

20:20-08:20

3 stops44h 00m

Los Angeles Los Angeles

Wed 23/9

16:45-20:20

2 stops19h 35m

£713

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Sat 6/6

07:05-20:00

1 stop20h 55m

Las Vegas Harry Reid Intl

Fri 12/6

22:10-20:35

1 stop14h 25m

£1,021

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Thu 4/6

09:35-23:59

2 stops22h 24m

Las Vegas Harry Reid Intl

Fri 12/6

22:47-12:25

2 stops29h 38m

£1,025

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Mon 22/6

11:05-23:01

3 stops43h 56m

Las Vegas Harry Reid Intl

Sat 27/6

23:51-13:50

3 stops29h 59m

£1,255

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Northern Ireland to California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to California?

If you are unable to visit California during the month of November, then departing from Northern Ireland during the month March is also very affordable. Most momondo users find prices during this month for around £382.

Can stopping save me money on Northern Ireland to California flights?

You could potentially save up to 3% on your flight if you consider stops on a Northern Ireland to California flight.

Cheap Northern Ireland to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to California

Fastest flight time	13h 15m
Direct flights	None

The fastest flight from Northern Ireland to California takes 13h 15m

There are no direct flights from Northern Ireland to California. There are no popular flight routes from Northern Ireland to California.

Search flight deals

Frequently asked questions about flying from Northern Ireland to California

When did momondo last update prices for flights from Northern Ireland to California?
Prices for flights from Northern Ireland to California are refreshed on a daily basis.
How many operators does momondo search for flights from Northern Ireland to California?
As of May 2026, there are 3 operators available to choose from for flights from Northern Ireland to California.
How old do you have to be to fly from Northern Ireland to California?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to California.
What documentation or ID do you need to fly to California?
The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Northern Ireland to California

Compare and see reviews for airlines that fly from Northern Ireland to California with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom £382	Free Cancellation	Rating 6.7 7,954 reviews	Search British Airways flights
American Airlines	PriceFrom £466	Free Cancellation	Rating 7.1 11,670 reviews	Search American Airlines flights
KLM	PriceFrom £499	Free Cancellation	Rating 7.8 1,510 reviews	Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to California?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Northern Ireland to California for you.

Can I find flights from Northern Ireland to California with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to California from Northern Ireland with this policy.

How can momondo help me find flights from Northern Ireland to California?

momondo provides multiple filters to help you find the best flight to California from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Northern Ireland to California right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Northern Ireland to California flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.