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

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

How long is the flight from California to Northern Ireland?

Flight times vary depending on what airport in California you fly out of and what airport in Northern Ireland you fly into. For example, flying from Los Angeles to Belfast Intl Airport takes 14h 50m on average. On the other hand, flying from San Francisco to Belfast Intl Airport takes 15h 05m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

Prices for flights from California to Northern Ireland are updated daily.

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

As of August 2026, there is 1 operator available to choose from for flights from California to Northern Ireland.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Northern Ireland.

What documentation or ID do you need to fly to Northern Ireland?

The required travel and health documents for your Northern Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$307 Cheap Flights from California to Northern Ireland in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from California to Northern Ireland

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:50 pm - 6:50 pmLAX Los Angeles Los Angeles-BHD Belfast City

14h 00m1 stop London Heathrow

11:40 am - 6:35 pmBHD Belfast City-LAX Los Angeles Los Angeles

14h 55m1 stop London Heathrow

$877British Airways

Sun, Feb 7 - Wed, Feb 10

6:00 pm - 4:50 pmLAX Los Angeles Los Angeles-BHD Belfast City

14h 50m1 stop London Heathrow

6:30 am - 1:25 pmBHD Belfast City-LAX Los Angeles Los Angeles

14h 55m1 stop London Heathrow

$880British Airways

Sun, Nov 29 - Sun, Dec 6

8:35 pm - 8:10 pmSFO San Francisco-BHD Belfast City

15h 35m1 stop London Heathrow

6:30 am - 2:55 pmBHD Belfast City-SFO San Francisco

16h 25m1 stop London Heathrow

$884British Airways

Sun, Nov 15 - Thu, Nov 19

5:25 pm - 6:50 pmSFO San Francisco-BHD Belfast City

17h 25m1 stop London Heathrow

12:20 pm - 6:45 pmBHD Belfast City-SFO San Francisco

14h 25m1 stop London Heathrow

$884British Airways

Sun, Nov 15 - Wed, Nov 18

5:25 pm - 6:35 pmSFO San Francisco-BHD Belfast City

17h 10m1 stop London Heathrow

8:35 am - 6:45 pmBHD Belfast City-SFO San Francisco

18h 10m1 stop London Heathrow

$884British Airways

Mon, Nov 16 - Fri, Nov 20

4:35 pm - 3:40 pmSFO San Francisco-BHD Belfast City

15h 05m1 stop London Heathrow

8:35 pm - 1:50 pmBHD Belfast City-SFO San Francisco

25h 15m1 stop London Heathrow

$888British Airways

Wed, Sep 16 - Wed, Sep 23

6:00 pm - 4:50 pmLAX Los Angeles Los Angeles-BHD Belfast City

14h 50m1 stop London Heathrow

12:00 pm - 11:43 pmBHD Belfast City-LAX Los Angeles Los Angeles

19h 43m2 stops London Heathrow Chicago O'Hare Intl

$890British Airways

Sun, Nov 29 - Sun, Dec 6

3:15 pm - 4:50 pmLAX Los Angeles Los Angeles-BHD Belfast City

17h 35m2 stops Las Vegas Harry Reid Intl London Heathrow

12:20 pm - 6:35 pmBHD Belfast City-LAX Los Angeles Los Angeles

14h 15m1 stop London Heathrow

$894British Airways

Sun, Feb 7 - Wed, Feb 10

2:58 pm - 3:30 pmSFO San Francisco-BHD Belfast City

16h 32m2 stops Chicago O'Hare Intl London Heathrow

11:35 am - 5:30 pmBHD Belfast City-SFO San Francisco

13h 55m1 stop London Heathrow

$899American Airlines

Mon, Sep 14 - Wed, Sep 30

1:45 pm - 9:20 amSFO San Francisco-BHD Belfast City

35h 35m1 stop Amsterdam Schiphol

5:30 pm - 11:45 amBHD Belfast City-SFO San Francisco

26h 15m1 stop Amsterdam Schiphol

$904Virgin Atlantic

Mon, Sep 14 - Wed, Sep 30

Cheap last minute flights

Enter your travel dates to find the best prices.

4:45 pm - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

32h 35m1 stop Amsterdam Schiphol

5:30 pm - 11:50 amBHD Belfast City-LAX Los Angeles Los Angeles

26h 20m1 stop Amsterdam Schiphol

$1,116Delta

Tue, Aug 25 - Mon, Aug 31

8:15 am - 4:55 pmLAX Los Angeles Los Angeles-BHD Belfast City

24h 40m2 stops Minneapolis St Paul Amsterdam Schiphol

5:30 pm - 11:50 amBHD Belfast City-LAX Los Angeles Los Angeles

26h 20m1 stop Amsterdam Schiphol

$1,120Delta

Sun, Aug 23 - Mon, Aug 31

6:00 am - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

19h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol

5:30 pm - 11:50 amBHD Belfast City-LAX Los Angeles Los Angeles

26h 20m1 stop Amsterdam Schiphol

$1,120Delta

Tue, Aug 25 - Mon, Aug 31

8:15 am - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

17h 05m2 stops Minneapolis St Paul Amsterdam Schiphol

5:30 pm - 2:45 pmBHD Belfast City-LAX Los Angeles Los Angeles

29h 15m1 stop Amsterdam Schiphol

$1,120Delta

Mon, Aug 24 - Mon, Aug 31

4:43 pm - 7:25 pmLAX Los Angeles Los Angeles-BHD Belfast City

18h 42m2 stops Phoenix Sky Harbor Intl London Heathrow

6:30 am - 10:02 pmBHD Belfast City-LAX Los Angeles Los Angeles

23h 32m2 stops London Heathrow Dallas/Fort Worth

$1,152British Airways

Mon, Aug 24 - Sun, Aug 30

4:45 pm - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

32h 35m1 stop Amsterdam Schiphol

5:30 pm - 2:45 pmBHD Belfast City-LAX Los Angeles Los Angeles

29h 15m1 stop Amsterdam Schiphol

$1,166Delta

Tue, Aug 25 - Sun, Aug 30

6:00 am - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

19h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol

5:30 pm - 2:45 pmBHD Belfast City-LAX Los Angeles Los Angeles

29h 15m1 stop Amsterdam Schiphol

$1,170Delta

Sun, Aug 23 - Sat, Aug 29

7:00 am - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

18h 20m2 stops New York John F Kennedy Intl Amsterdam Schiphol

5:30 pm - 11:50 amBHD Belfast City-LAX Los Angeles Los Angeles

26h 20m1 stop Amsterdam Schiphol

$1,170Delta

Tue, Aug 25 - Sun, Aug 30

6:25 am - 9:20 amLAX Los Angeles Los Angeles-BHD Belfast City

18h 55m2 stops Minneapolis St Paul Amsterdam Schiphol

5:30 pm - 11:50 amBHD Belfast City-LAX Los Angeles Los Angeles

26h 20m1 stop Amsterdam Schiphol

$1,170Delta

Mon, Aug 24 - Sun, Aug 30

6:05 pm - 6:45 pmLAX Los Angeles Los Angeles-BHD Belfast City

16h 40m1 stop London Heathrow

6:30 am - 6:20 pmBHD Belfast City-LAX Los Angeles Los Angeles

19h 50m1 stop London Heathrow

$1,284British Airways

Mon, Aug 24 - Sun, Aug 30

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British Airways flights from California to Northern Ireland

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

British Airways

Feb 7

LAX8:50 pmLos Angeles Los Angeles

14h 00m

1 stop

BHD6:50 pmBelfast City

Feb 10

BHD11:40 amBelfast City

14h 55m

1 stop

LAX6:35 pmLos Angeles Los Angeles

$877

British Airways

Nov 29

LAX6:00 pmLos Angeles Los Angeles

14h 50m

1 stop

BHD4:50 pmBelfast City

Dec 6

BHD6:30 amBelfast City

14h 55m

1 stop

LAX1:25 pmLos Angeles Los Angeles

$880

British Airways

Nov 15

SFO8:35 pmSan Francisco

15h 35m

1 stop

BHD8:10 pmBelfast City

Nov 19

BHD6:30 amBelfast City

16h 25m

1 stop

SFO2:55 pmSan Francisco

$884

Aer Lingus flights from California to Northern Ireland

Our best Aer Lingus deals on California to Northern Ireland flight tickets

Aer Lingus

Oct 10

SFO5:40 pmSan Francisco

16h 05m

2 stops

BHD5:45 pmBelfast City

Oct 13

BHD7:00 amBelfast City

16h 55m

2 stops

SFO3:55 pmSan Francisco

$1,199

Aer Lingus

Nov 21

SFO5:20 pmSan Francisco

31h 15m

2 stops

BHD8:35 amBelfast City

Nov 28

BHD6:35 amBelfast City

17h 00m

2 stops

SFO3:35 pmSan Francisco

$1,211

Aer Lingus

Oct 10

SFO5:40 pmSan Francisco

16h 05m

2 stops

BHD5:45 pmBelfast City

Oct 12

BHD6:30 pmBelfast City

29h 25m

2 stops

SFO3:55 pmSan Francisco

$1,232

momondo Fare Finder

Use the filters below to find and compare flights from California to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

Los AngelesBelfast

LAX Los Angeles Los Angeles - BHD Belfast City

LAXBHD

Los Angeles Los Angeles

Sun 2/7

8:50 pm-6:50 pm

1 stop14h 00m

Belfast City

Wed 2/10

11:40 am-6:35 pm

1 stop14h 55m

$877

Los AngelesBelfast

LAX Los Angeles Los Angeles - BHD Belfast City

LAXBHD

Los Angeles Los Angeles

Sun 11/29

6:00 pm-4:50 pm

1 stop14h 50m

Belfast City

Sun 12/6

6:30 am-1:25 pm

1 stop14h 55m

$880

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Sun 11/15

8:35 pm-8:10 pm

1 stop15h 35m

Belfast City

Thu 11/19

6:30 am-2:55 pm

1 stop16h 25m

$884

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Sun 11/15

5:25 pm-6:50 pm

1 stop17h 25m

Belfast City

Wed 11/18

12:20 pm-6:45 pm

1 stop14h 25m

$884

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Mon 11/16

5:25 pm-6:35 pm

1 stop17h 10m

Belfast City

Fri 11/20

8:35 am-6:45 pm

1 stop18h 10m

$884

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Wed 9/16

4:35 pm-3:40 pm

1 stop15h 05m

Belfast City

Wed 9/23

8:35 pm-1:50 pm

1 stop25h 15m

$888

Los AngelesBelfast

LAX Los Angeles Los Angeles - BHD Belfast City

LAXBHD

Los Angeles Los Angeles

Sun 11/29

6:00 pm-4:50 pm

1 stop14h 50m

Belfast City

Sun 12/6

12:00 pm-11:43 pm

2 stops19h 43m

$890

Los AngelesBelfast

LAX Los Angeles Los Angeles - BHD Belfast City

LAXBHD

Los Angeles Los Angeles

Sun 2/7

3:15 pm-4:50 pm

2 stops17h 35m

Belfast City

Wed 2/10

12:20 pm-6:35 pm

1 stop14h 15m

$894

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Mon 9/14

2:58 pm-3:30 pm

2 stops16h 32m

Belfast City

Wed 9/30

11:35 am-5:30 pm

1 stop13h 55m

$899

San FranciscoBelfast

SFO San Francisco - BHD Belfast City

SFOBHD

San Francisco

Mon 9/14

1:45 pm-9:20 am

1 stop35h 35m

Belfast City

Wed 9/30

5:30 pm-11:45 am

1 stop26h 15m

$904

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Other information

What is the cheapest month to fly to Northern Ireland?

The cheapest month to fly to Northern Ireland from California is in August. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Northern Ireland from California during January instead. Flights to Northern Ireland in January, while not as cheap as those in August, still average around $0.

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

You could potentially save up to 13% on your flight if you consider stops on a California to Northern Ireland flight.

Cheap California to Northern Ireland flight deals and tips

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

Best Price Found	$307
Fastest flight time	14h 50m
Direct flights	None

The best one-way flight to Northern Ireland from California in the past 72 hours is $307. The best round-trip flight deal from California to Northern Ireland found on momondo in the last 72 hours is $877.

The fastest flight from California to Northern Ireland takes 14h 50m

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

Search flight deals

Frequently asked questions about flying from California to Northern Ireland

When did momondo last update prices for flights from California to Northern Ireland?
Prices for flights from California to Northern Ireland are updated daily.
How many operators does momondo search for flights from California to Northern Ireland?
As of August 2026, there is 1 operator available to choose from for flights from California to Northern Ireland.
How old do you have to be to fly from California to Northern Ireland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from California to Northern Ireland.
What documentation or ID do you need to fly to Northern Ireland?
The required travel and health documents for your Northern Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from California to Northern Ireland

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

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $583	Free Cancellation	Rating 6.7 8,179 reviews		Search British Airways flights

Why use momondo?

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

Finding the right flight to Northern Ireland from California is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Northern Ireland quick and easy, saving you time and money.

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

All flight searches from California to Northern Ireland on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between California and Northern Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Northern Ireland from California are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.