Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from California to Northern Ireland from $330

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to Northern Ireland departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from California to Northern Ireland

Cheap round-trip flights

Logo
4:30 pm - 8:20 pmLAX-BFS
19h 50m1 stop
Logo
8:55 pm - 2:10 pmBFS-LAX
25h 15m1 stop
$524
Find Deal
Sun, Sep 21 - Tue, Sep 30
Logo
4:30 pm - 8:25 pmLAX-BHD
19h 55m1 stop
Logo
2:20 pm - 2:10 pmBHD-LAX
31h 50m1 stop
$532
Find Deal
Sun, Sep 21 - Tue, Sep 30
British Airways Logo
5:30 pm - 6:40 pmSFO-BHD
17h 10m1 stop
British Airways Logo
7:25 pm - 3:00 pmBHD-SFO
27h 35m1 stop
$630British Airways
Find Deal
Sun, Nov 23 - Tue, Dec 2
American Airlines Logo
9:00 am - 11:30 amSFO-BHD
18h 30m2 stops
American Airlines Logo
12:15 pm - 11:03 pmBHD-SFO
18h 48m2 stops
$669American Airlines
Find Deal
Sun, Sep 21 - Mon, Oct 6
British Airways Logo
8:40 pm - 8:15 pmSFO-BHD
15h 35m1 stop
British Airways Logo
7:25 pm - 3:00 pmBHD-SFO
27h 35m1 stop
$672British Airways
Find Deal
Sun, Nov 23 - Mon, Dec 1
KLM Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
KLM Logo
5:25 pm - 11:45 amBHD-SFO
26h 20m1 stop
$709KLM
Find Deal
Sun, Sep 21 - Mon, Oct 6
American Airlines Logo
12:45 pm - 1:15 pmLAX-BHD
16h 30m2 stops
American Airlines Logo
10:40 am - 8:25 pmBHD-LAX
17h 45m1 stop
$711American Airlines
Find Deal
Sun, Nov 23 - Sun, Dec 7
Virgin Atlantic Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
Virgin Atlantic Logo
6:30 am - 11:33 pmBHD-SFO
25h 03m2 stops
$711Virgin Atlantic
Find Deal
Sun, Sep 21 - Mon, Oct 6
KLM Logo
1:45 pm - 4:55 pmSFO-BHD
19h 10m1 stop
KLM Logo
5:20 pm - 12:50 pmBHD-SFO
26h 30m1 stop
$734KLM
Find Deal
Thu, Oct 23 - Thu, Oct 30
Virgin Atlantic Logo
1:55 pm - 4:50 pmSFO-BHD
18h 55m1 stop
Virgin Atlantic Logo
5:20 pm - 11:50 amBHD-SFO
26h 30m1 stop
$736Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7

British Airways flights from California to Northern Ireland

Our best British Airways deals on California to Northern Ireland flight tickets
British Airways
Nov 23
SFO5:30 pmSan Francisco
17h 10m
1 stop
BHD6:40 pmBelfast City
Dec 2
BHD7:25 pmBelfast City
27h 35m
1 stop
SFO3:00 pmSan Francisco
$630
Find similar
British Airways
Nov 23
SFO8:40 pmSan Francisco
15h 35m
1 stop
BHD8:15 pmBelfast City
Dec 1
BHD7:25 pmBelfast City
27h 35m
1 stop
SFO3:00 pmSan Francisco
$672
Find similar
British Airways
Nov 3
LAX7:20 pmLos Angeles
15h 15m
1 stop
BHD6:35 pmBelfast City
Nov 15
BHD9:15 amBelfast City
14h 35m
1 stop
LAX3:50 pmLos Angeles
$680
Find similar

Aer Lingus flights from California to Northern Ireland

Our best Aer Lingus deals on California to Northern Ireland flight tickets
Aer Lingus
Nov 22
SFO8:40 pmSan Francisco
15h 00m
1 stop
BHD7:40 pmBelfast City
Nov 30
BHD5:55 pmBelfast City
29h 40m
2 stops
SFO3:35 pmSan Francisco
$1,057
Find similar
Aer Lingus
Aug 25
SFO5:40 pmSan Francisco
18h 15m
2 stops
BHD7:55 pmBelfast City
Aug 28
BHD6:50 pmBelfast City
29h 00m
2 stops
SFO3:50 pmSan Francisco
$1,249
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from California to Northern Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 31, 2025.
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

Los AngelesBelfast

LAX - BFS

LAXBFS

Los Angeles

Sun 9/21

4:30 pm-8:20 pm

1 stop19h 50m

Belfast Intl

Tue 9/30

8:55 pm-2:10 pm

1 stop25h 15m

$524

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 9/21

4:30 pm-8:25 pm

1 stop19h 55m

Belfast City

Tue 9/30

2:20 pm-2:10 pm

1 stop31h 50m

$532

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 11/23

5:30 pm-6:40 pm

1 stop17h 10m

Belfast City

Tue 12/2

7:25 pm-3:00 pm

1 stop27h 35m

$630

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 9/21

9:00 am-11:30 am

2 stops18h 30m

Belfast City

Mon 10/6

12:15 pm-11:03 pm

2 stops18h 48m

$669

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 11/23

8:40 pm-8:15 pm

1 stop15h 35m

Belfast City

Mon 12/1

7:25 pm-3:00 pm

1 stop27h 35m

$672

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 9/21

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Mon 10/6

5:25 pm-11:45 am

1 stop26h 20m

$709

Los AngelesBelfast

LAX - BHD

LAXBHD

Los Angeles

Sun 11/23

12:45 pm-1:15 pm

2 stops16h 30m

Belfast City

Sun 12/7

10:40 am-8:25 pm

1 stop17h 45m

$711

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Sun 9/21

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Mon 10/6

6:30 am-11:33 pm

2 stops25h 03m

$711

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Thu 10/23

1:45 pm-4:55 pm

1 stop19h 10m

Belfast City

Thu 10/30

5:20 pm-12:50 pm

1 stop26h 30m

$734

San FranciscoBelfast

SFO - BHD

SFOBHD

San Francisco

Wed 12/3

1:55 pm-4:50 pm

1 stop18h 55m

Belfast City

Sun 12/7

5:20 pm-11:50 am

1 stop26h 30m

$736

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Northern Ireland from

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

What is the cheapest day to depart on your flight to Northern Ireland?

The cheapest day to depart on your flight to Northern Ireland is on a Friday when prices can be found for as low as $691. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from California to Northern Ireland for around $1,143.

What is the cheapest time of day to depart on your flight to Northern Ireland?

At noon is the cheapest time of day to fly from California to Northern Ireland when you can find flight prices for as low as $681. Flying to Northern Ireland at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $838.

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

You could potentially save up to 24% 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

$330

Fastest flight time

13h 20m

Direct flights

None

Airports in Northern Ireland

2 airports
The best one-way flight to Northern Ireland from California in the past 72 hours is $330. The best round-trip flight deal from California to Northern Ireland found on momondo in the last 72 hours is $524.
The fastest flight from California to Northern Ireland takes 13h 20m
There are no direct flights from California to Northern Ireland. Popular non-direct routes for this connection are Los Angeles Airport - Belfast Intl Airport, Los Angeles Airport - Belfast City Airport and San Francisco Airport - Belfast Intl Airport.
There are 2 airports near Northern Ireland: Belfast Intl (BFS), Belfast City (BHD)
Search flight deals

  • 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?

  • 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 AirwaysPriceFrom $588Free CancellationRating
6.6
7,222 reviews
Search British Airways flights
American AirlinesPriceFrom $635Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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.

An easier way to manage your Northern Ireland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/5
Tue 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Northern Ireland

Popular cities in Northern Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $283
Flights to Manchesterfrom $372
Flights to Edinburghfrom $405
Flights to Glasgowfrom $417
Flights to Birminghamfrom $384
Flights to Belfastfrom $442
Flights to Newcastle upon Tynefrom $462
Flights to Bristolfrom $465
Flights to Invernessfrom $402
Flights to Liverpoolfrom $475
Flights to Aberdeenfrom $506
Flights to Leedsfrom $473