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

British Airways and KLM are the most popular carriers operating 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 June 2026, there is 1 operator 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.

£339 Cheap Flights from Northern Ireland to California in 2026

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Find the cheapest flights from Northern Ireland to California

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

09:50 - 18:35

BHD

LAS

16h 45m

1 stop

20:25 - 16:55

LAS

BHD

12h 30m

1 stop

£339Virgin Atlantic

Thu, 17 Sep - Mon, 21 Sep

09:50 - 00:28

BHD

LAS

22h 38m

2 stops

20:25 - 16:55

LAS

BHD

12h 30m

1 stop

£362Virgin Atlantic

Thu, 17 Sep - Mon, 21 Sep

16:05 - 11:45

BHD

LAX

27h 40m

1 stop

20:55 - 20:35

LAX

BHD

15h 40m

1 stop

£565British Airways

Wed, 2 Sep - Sun, 6 Sep

16:05 - 11:45

BHD

LAX

27h 40m

1 stop

20:55 - 20:35

LAX

BHD

15h 40m

1 stop

£566British Airways

Wed, 2 Sep - Sun, 6 Sep

09:50 - 00:33

BHD

SFO

22h 43m

2 stops

10:35 - 16:55

SFO

BHD

22h 20m

2 stops

£643Delta

Thu, 9 Jul - Mon, 13 Jul

06:30 - 20:15

BHD

LAX

21h 45m

1 stop

18:10 - 19:40

LAX

BHD

17h 30m

1 stop

£650American Airlines

Tue, 14 Jul - Tue, 21 Jul

09:50 - 00:33

BHD

SFO

22h 43m

2 stops

09:20 - 16:55

SFO

BHD

23h 35m

2 stops

£664Delta

Mon, 20 Jul - Mon, 27 Jul

21:55 - 16:50

BFS

LAX

26h 55m

2 stops

19:10 - 20:55

LAX

BFS

17h 45m

2 stops

£681Multiple Airlines

Mon, 24 Aug - Mon, 31 Aug

21:55 - 16:50

BFS

LAX

26h 55m

2 stops

19:10 - 20:55

LAX

BFS

17h 45m

2 stops

£682Multiple Airlines

Mon, 24 Aug - Mon, 31 Aug

06:30 - 18:20

BHD

LAS

19h 50m

2 stops

11:31 - 12:55

LAS

BHD

17h 24m

2 stops

£741American Airlines

Thu, 17 Sep - Mon, 21 Sep

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KLM flights from Northern Ireland to California

Our best KLM deals on Northern Ireland to California flight tickets

KLM

5 Jul

BHD17:30Belfast City

26h 15m

1 stop

SFO11:45San Francisco

16 Jul

SFO13:45San Francisco

19h 10m

1 stop

BHD16:55Belfast City

£956

KLM

12 Jul

BHD17:30Belfast City

26h 20m

1 stop

LAX11:50Los Angeles

17 Jul

LAX17:05Los Angeles

15h 50m

2 stops

BHD16:55Belfast City

£1,185

British Airways flights from Northern Ireland to California

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

British Airways

2 Sept

BHD16:05Belfast City

27h 40m

1 stop

LAX11:45Los Angeles

6 Sept

LAX20:55Los Angeles

15h 40m

1 stop

BHD20:35Belfast City

£565

British Airways

2 Sept

BHD16:05Belfast City

27h 40m

1 stop

LAX11:45Los Angeles

6 Sept

LAX20:55Los Angeles

15h 40m

1 stop

BHD20:35Belfast City

£566

British Airways

2 Sept

BHD20:35Belfast City

25h 15m

1 stop

LAX13:50Los Angeles

6 Sept

LAX20:55Los Angeles

15h 40m

1 stop

BHD20:35Belfast City

£567

momondo 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

Fastest return journey

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Thu 17/9

09:50-18:35

1 stop16h 45m

Las Vegas Harry Reid Intl

Mon 21/9

20:25-16:55

1 stop12h 30m

£339

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Thu 17/9

09:50-00:28

2 stops22h 38m

Las Vegas Harry Reid Intl

Mon 21/9

20:25-16:55

1 stop12h 30m

£362

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/9

16:05-11:45

1 stop27h 40m

Los Angeles

Sun 6/9

20:55-20:35

1 stop15h 40m

£565

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Wed 2/9

16:05-11:45

1 stop27h 40m

Los Angeles

Sun 6/9

20:55-20:35

1 stop15h 40m

£566

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 9/7

09:50-00:33

2 stops22h 43m

San Francisco

Mon 13/7

10:35-16:55

2 stops22h 20m

£643

BelfastLos Angeles

BHD - LAX

BHDLAX

Belfast City

Tue 14/7

06:30-20:15

1 stop21h 45m

Los Angeles

Tue 21/7

18:10-19:40

1 stop17h 30m

£650

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Mon 20/7

09:50-00:33

2 stops22h 43m

San Francisco

Mon 27/7

09:20-16:55

2 stops23h 35m

£664

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Mon 24/8

21:55-16:50

2 stops26h 55m

Los Angeles

Mon 31/8

19:10-20:55

2 stops17h 45m

£681

BelfastLos Angeles

BFS - LAX

BFSLAX

Belfast Intl

Mon 24/8

21:55-16:50

2 stops26h 55m

Los Angeles

Mon 31/8

19:10-20:55

2 stops17h 45m

£682

BelfastLas Vegas

BHD - LAS

BHDLAS

Belfast City

Thu 17/9

06:30-18:20

2 stops19h 50m

Las Vegas Harry Reid Intl

Mon 21/9

11:31-12:55

2 stops17h 24m

£741

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 August, then departing from Northern Ireland during the month July is also very affordable. Most momondo users find prices during this month for around £455.

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	15h 45m
Direct flights	None

The fastest flight from Northern Ireland to California takes 15h 45m

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 June 2026, there is 1 operator 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 £435	Free Cancellation	Rating 6.7 8,070 reviews		Search British Airways 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.