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

Aer Lingus, KLM, and Delta 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 October 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.

£355 Cheap Flights from Northern Ireland to California in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Northern Ireland to California

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

17:15 - 11:45BHD Belfast City-LAX Los Angeles

26h 30m1 stop Amsterdam Schiphol

07:00 - 09:10LAX Los Angeles-BHD Belfast City

18h 10m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

£617KLM

Wed, 4 Nov - Tue, 10 Nov

17:15 - 11:45BHD Belfast City-LAX Los Angeles

26h 30m1 stop Amsterdam Schiphol

13:50 - 16:45LAX Los Angeles-BHD Belfast City

18h 55m1 stop Amsterdam Schiphol

£617KLM

Wed, 4 Nov - Tue, 10 Nov

17:15 - 11:45BHD Belfast City-LAX Los Angeles

26h 30m1 stop Amsterdam Schiphol

13:50 - 16:45LAX Los Angeles-BHD Belfast City

18h 55m1 stop Amsterdam Schiphol

£631KLM

Thu, 5 Nov - Mon, 9 Nov

17:15 - 11:45BHD Belfast City-LAX Los Angeles

26h 30m1 stop Amsterdam Schiphol

07:25 - 09:10LAX Los Angeles-BHD Belfast City

17h 45m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£631KLM

Thu, 5 Nov - Mon, 9 Nov

09:40 - 00:43BHD Belfast City-LAX Los Angeles

23h 03m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

08:25 - 16:45LAX Los Angeles-BHD Belfast City

24h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£635Delta

Thu, 5 Nov - Mon, 9 Nov

09:40 - 00:43BHD Belfast City-LAX Los Angeles

23h 03m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

07:00 - 09:10LAX Los Angeles-BHD Belfast City

18h 10m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

£636KLM

Wed, 4 Nov - Tue, 10 Nov

07:00 - 20:31BHD Belfast City-SFO San Francisco

21h 31m2 stops London Gatwick Vancouver Intl

14:45 - 20:30SFO San Francisco-BHD Belfast City

21h 45m2 stops Vancouver Intl London Heathrow

£672Multiple Airlines

Sat, 17 Apr - Fri, 23 Apr

07:05 - 13:50BHD Belfast City-SFO San Francisco

14h 45m1 stop London Heathrow

16:35 - 18:10SFO San Francisco-BHD Belfast City

17h 35m1 stop London Heathrow

£678British Airways

Sat, 17 Apr - Fri, 23 Apr

07:05 - 13:50BHD Belfast City-SFO San Francisco

14h 45m1 stop London Heathrow

16:12 - 18:10SFO San Francisco-BHD Belfast City

17h 58m2 stops Los Angeles London Heathrow

£679British Airways

Sat, 17 Apr - Fri, 23 Apr

20:00 - 14:55BHD Belfast City-SFO San Francisco

26h 55m1 stop London Heathrow

17:25 - 16:55SFO San Francisco-BHD Belfast City

15h 30m1 stop London Heathrow

£680British Airways

Thu, 19 Nov - Thu, 26 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

09:40 - 15:56BHD Belfast City-SAN San Diego

37h 16m2 stops Amsterdam Schiphol Salt Lake City

22:05 - 16:45SAN San Diego-BHD Belfast City

34h 40m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£1,294KLM

Sun, 25 Oct - Sun, 1 Nov

17:15 - 15:56BHD Belfast City-SAN San Diego

29h 41m2 stops Amsterdam Schiphol Salt Lake City

07:20 - 09:10SAN San Diego-BHD Belfast City

17h 50m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£1,320KLM

Sun, 25 Oct - Sun, 1 Nov

17:15 - 19:36BHD Belfast City-SAN San Diego

33h 21m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

14:10 - 16:45SAN San Diego-BHD Belfast City

18h 35m2 stops Atlanta Hartsfield-Jackson Amsterdam Schiphol

£1,324KLM

Sun, 25 Oct - Sun, 1 Nov

17:15 - 19:14BHD Belfast City-SAN San Diego

32h 59m2 stops Amsterdam Schiphol Los Angeles

22:05 - 09:10SAN San Diego-BHD Belfast City

27h 05m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£1,333Multiple Airlines

Sun, 25 Oct - Sun, 1 Nov

17:15 - 19:14BHD Belfast City-SAN San Diego

32h 59m2 stops Amsterdam Schiphol Los Angeles

22:05 - 09:10SAN San Diego-BHD Belfast City

27h 05m2 stops New York John F Kennedy Intl Amsterdam Schiphol

£1,336Multiple Airlines

Sun, 25 Oct - Sun, 1 Nov

06:30 - 17:10BHD Belfast City-SAN San Diego

17h 40m1 stop London Heathrow

11:50 - 13:50SAN San Diego-BHD Belfast City

18h 00m2 stops Chicago O'Hare Intl London Heathrow

£1,766British Airways

Sun, 25 Oct - Sun, 1 Nov

06:30 - 17:10BHD Belfast City-SAN San Diego

17h 40m1 stop London Heathrow

11:50 - 13:50SAN San Diego-BHD Belfast City

18h 00m2 stops Chicago O'Hare Intl London Heathrow

£1,768British Airways

Sun, 25 Oct - Sun, 1 Nov

06:30 - 17:10BHD Belfast City-SAN San Diego

17h 40m1 stop London Heathrow

14:18 - 18:50SAN San Diego-BHD Belfast City

20h 32m2 stops Dallas/Fort Worth London Heathrow

£1,846British Airways

Sun, 25 Oct - Sun, 1 Nov

06:30 - 17:10BHD Belfast City-SAN San Diego

17h 40m1 stop London Heathrow

11:50 - 16:50SAN San Diego-BHD Belfast City

21h 00m2 stops Chicago O'Hare Intl London Heathrow

£1,934British Airways

Sun, 25 Oct - Sun, 1 Nov

15:15 - 17:10BHD Belfast City-SAN San Diego

32h 55m1 stop London Heathrow

11:08 - 13:50SAN San Diego-BHD Belfast City

18h 42m2 stops Dallas/Fort Worth London Heathrow

£2,742Finnair

Sun, 25 Oct - Sun, 1 Nov

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KLM flights from Northern Ireland to California

Our best KLM deals on Northern Ireland to California flight tickets

KLM

4 Nov

BHD17:15Belfast City

26h 30m

1 stop

LAX11:45Los Angeles

10 Nov

LAX13:50Los Angeles

18h 55m

1 stop

BHD16:45Belfast City

£617

KLM

5 Nov

BHD17:15Belfast City

26h 30m

1 stop

LAX11:45Los Angeles

9 Nov

LAX13:50Los Angeles

18h 55m

1 stop

BHD16:45Belfast City

£631

KLM

4 Nov

BHD09:40Belfast City

23h 03m

2 stops

LAX00:43Los Angeles

10 Nov

LAX07:00Los Angeles

18h 10m

2 stops

BHD09:10Belfast City

£636

British Airways flights from Northern Ireland to California

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

British Airways

17 Apr

BHD07:05Belfast City

14h 45m

1 stop

SFO13:50San Francisco

23 Apr

SFO16:35San Francisco

17h 35m

1 stop

BHD18:10Belfast City

£678

British Airways

17 Apr

BHD07:05Belfast City

14h 45m

1 stop

SFO13:50San Francisco

23 Apr

SFO16:12San Francisco

17h 58m

2 stops

BHD18:10Belfast City

£679

British Airways

19 Nov

BHD20:00Belfast City

26h 55m

1 stop

SFO14:55San Francisco

26 Nov

SFO17:25San Francisco

15h 30m

1 stop

BHD16:55Belfast City

£680

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

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Wed 4/11

17:15-11:45

1 stop26h 30m

Los Angeles

Tue 10/11

07:00-09:10

2 stops18h 10m

£617

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Wed 4/11

17:15-11:45

1 stop26h 30m

Los Angeles

Tue 10/11

13:50-16:45

1 stop18h 55m

£617

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 5/11

17:15-11:45

1 stop26h 30m

Los Angeles

Mon 9/11

13:50-16:45

1 stop18h 55m

£631

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 5/11

17:15-11:45

1 stop26h 30m

Los Angeles

Mon 9/11

07:25-09:10

2 stops17h 45m

£631

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Thu 5/11

09:40-00:43

2 stops23h 03m

Los Angeles

Mon 9/11

08:25-16:45

2 stops24h 20m

£635

BelfastLos Angeles

BHD Belfast City - LAX Los Angeles

BHDLAX

Belfast City

Wed 4/11

09:40-00:43

2 stops23h 03m

Los Angeles

Tue 10/11

07:00-09:10

2 stops18h 10m

£636

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 17/4

07:00-20:31

2 stops21h 31m

San Francisco

Fri 23/4

14:45-20:30

2 stops21h 45m

£672

Fastest return journey

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 17/4

07:05-13:50

1 stop14h 45m

San Francisco

Fri 23/4

16:35-18:10

1 stop17h 35m

£678

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Sat 17/4

07:05-13:50

1 stop14h 45m

San Francisco

Fri 23/4

16:12-18:10

2 stops17h 58m

£679

BelfastSan Francisco

BHD Belfast City - SFO San Francisco

BHDSFO

Belfast City

Thu 19/11

20:00-14:55

1 stop26h 55m

San Francisco

Thu 26/11

17:25-16:55

1 stop15h 30m

£680

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 April, then departing from Northern Ireland during the month February is also very affordable. Most momondo users find prices during this month for around £0.

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

You could potentially save up to 29% 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

Best price found	£355
Fastest flight time	14h 35m
Direct flights	None

The best one-way flight to California from Northern Ireland in the past 72 hours is £355. The best return flight deal from Northern Ireland to California found on momondo in the last 72 hours is £617.

The fastest flight from Northern Ireland to California takes 14h 35m

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 October 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 £457	Free Cancellation	Rating 6.7 8,267 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.