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 13h 35m on average. On the other hand, flying from San Francisco to Belfast Intl Airport takes 14h 55m 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.

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

British Airways, KLM, and Aer Lingus are the most popular carriers operating 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 May 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.

$322 Cheap Flights from California to Northern Ireland in 2026

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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.

5:30 pm - 6:35 pm

SFO

BHD

17h 05m

1 stop

8:45 am - 3:00 pm

BHD

SFO

14h 15m

1 stop

$858British Airways

Mon, Nov 2 - Fri, Nov 13

5:30 pm - 6:35 pm

SFO

BHD

17h 05m

1 stop

8:45 am - 6:45 pm

BHD

SFO

18h 00m

1 stop

$859British Airways

Mon, Nov 2 - Fri, Nov 13

2:06 pm - 4:05 pm

SFO

BHD

17h 59m

2 stops

6:45 am - 6:24 pm

BHD

SFO

19h 39m

2 stops

$888American Airlines

Mon, Nov 2 - Fri, Nov 13

2:06 pm - 4:05 pm

SFO

BHD

17h 59m

2 stops

6:45 am - 6:24 pm

BHD

SFO

19h 39m

2 stops

$889American Airlines

Mon, Nov 2 - Fri, Nov 13

6:00 am - 7:15 pm

SFO

BFS

29h 15m

2 stops

9:15 am - 5:05 pm

BFS

SFO

39h 50m

3 stops

$997Multiple Airlines

Wed, Jun 3 - Mon, Jun 8

8:10 pm - 10:50 pm

LAX

BFS

18h 40m

2 stops

3:00 pm - 5:30 pm

BFS

LAX

34h 30m

1 stop

$1,021Multiple Airlines

Sun, Aug 16 - Thu, Sep 3

4:45 pm - 9:20 am

LAX

BHD

32h 35m

1 stop

9:50 am - 11:50 am

BHD

LAX

34h 00m

1 stop

$1,033KLM

Sun, May 10 - Wed, May 20

6:45 am - 9:20 am

LAX

BHD

18h 35m

2 stops

5:30 pm - 11:50 am

BHD

LAX

26h 20m

1 stop

$1,037Delta

Sun, May 10 - Wed, May 20

6:15 am - 9:20 am

LAX

BHD

19h 05m

2 stops

5:30 pm - 11:50 am

BHD

LAX

26h 20m

1 stop

$1,038Delta

Sun, May 10 - Wed, May 20

5:07 pm - 4:55 pm

SFO

BHD

15h 48m

2 stops

9:50 am - 11:52 pm

BHD

SFO

22h 02m

2 stops

$1,117KLM

Wed, Jul 22 - Wed, Jul 29

American Airlines flights from California to Northern Ireland

Our best American Airlines deals on California to Northern Ireland flight tickets

American Airlines

Oct 27

LAX6:30 pmLos Angeles

17h 10m

1 stop

BHD6:40 pmBelfast City

Nov 3

BHD8:45 amBelfast City

19h 30m

1 stop

LAX8:15 pmLos Angeles

$885

American Airlines

Nov 2

SFO2:06 pmSan Francisco

17h 59m

2 stops

BHD4:05 pmBelfast City

Nov 13

BHD6:45 amBelfast City

19h 39m

2 stops

SFO6:24 pmSan Francisco

$888

American Airlines

Nov 2

SFO2:06 pmSan Francisco

17h 59m

2 stops

BHD4:05 pmBelfast City

Nov 13

BHD6:45 amBelfast City

19h 39m

2 stops

SFO6:24 pmSan Francisco

$889

British Airways flights from California to Northern Ireland

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

British Airways

Nov 2

SFO5:30 pmSan Francisco

17h 05m

1 stop

BHD6:35 pmBelfast City

Nov 13

BHD8:45 amBelfast City

14h 15m

1 stop

SFO3:00 pmSan Francisco

$858

British Airways

Nov 2

SFO5:30 pmSan Francisco

17h 05m

1 stop

BHD6:35 pmBelfast City

Nov 13

BHD8:45 amBelfast City

18h 00m

1 stop

SFO6:45 pmSan Francisco

$859

British Airways

Oct 27

LAX10:00 pmLos Angeles

13h 40m

1 stop

BHD6:40 pmBelfast City

Nov 3

BHD6:35 amBelfast City

17h 15m

1 stop

LAX3:50 pmLos Angeles

$870

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

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

5:30 pm-6:35 pm

1 stop17h 05m

Belfast City

Fri 11/13

8:45 am-3:00 pm

1 stop14h 15m

$858

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

5:30 pm-6:35 pm

1 stop17h 05m

Belfast City

Fri 11/13

8:45 am-6:45 pm

1 stop18h 00m

$859

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

2:06 pm-4:05 pm

2 stops17h 59m

Belfast City

Fri 11/13

6:45 am-6:24 pm

2 stops19h 39m

$888

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Mon 11/2

2:06 pm-4:05 pm

2 stops17h 59m

Belfast City

Fri 11/13

6:45 am-6:24 pm

2 stops19h 39m

$889

San FranciscoBelfast

SFO - BFS

SFOBFS

San Francisco

Wed 6/3

6:00 am-7:15 pm

2 stops29h 15m

Belfast Intl

Mon 6/8

9:15 am-5:05 pm

3 stops39h 50m

$997

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 8/16

8:10 pm-10:50 pm

2 stops18h 40m

Belfast Intl

Thu 9/3

3:00 pm-5:30 pm

1 stop34h 30m

$1,021

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 5/10

4:45 pm-9:20 am

1 stop32h 35m

Belfast City

Wed 5/20

9:50 am-11:50 am

1 stop34h 00m

$1,033

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 5/10

6:45 am-9:20 am

2 stops18h 35m

Belfast City

Wed 5/20

5:30 pm-11:50 am

1 stop26h 20m

$1,037

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 5/10

6:15 am-9:20 am

2 stops19h 05m

Belfast City

Wed 5/20

5:30 pm-11:50 am

1 stop26h 20m

$1,038

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 7/22

5:07 pm-4:55 pm

2 stops15h 48m

Belfast City

Wed 7/29

9:50 am-11:52 pm

2 stops22h 02m

$1,117

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 March. Flight prices, which tend to average around $566, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Northern Ireland from California during September instead. Flights to Northern Ireland in September, while not as cheap as those in March, still average around $586.

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

You could potentially save up to 22% 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

Fastest flight time	12h 35m
Direct flights	None

The fastest flight from California to Northern Ireland takes 12h 35m

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 May 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 7,949 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.