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

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from California to Ireland

How many flights depart from California to Ireland on average per day?

7 flights are operational daily from California to Ireland as of February 2026. The most popular departure time for this route is 5:00PM, with 62% of flights per day taking off in the afternoon.

What airlines fly to Ireland?

Aer Lingus, American Airlines and United Airlines are the top three most popular airlines that fly to Ireland from California according to our data. Aer Lingus is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 16 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

How long is the flight from California to Ireland?

Flight times from California to Ireland vary, but if you’re flying out of San Francisco and flying into Dublin (one of the most popular routes), then the duration is 10h 05m on average. Another popular route from California to Ireland is flying from Los Angeles to Dublin, which will take roughly 10h 15m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from California to Ireland on average per week?

As of February 2026, there are 51 flights per week flying from California to Ireland. The most common day of the week flights depart is Tue, with 16% of flights taking off on this day.

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

Prices for flights from California to Ireland are updated daily.

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

As of February 2026, there are 16 operators available to choose from for flights from California to Ireland.

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

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 California to Ireland.

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

The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$237 Cheap Flights from California to Ireland in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from California to Ireland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:05 am - 5:10 pm

SAN

DUB

22h 05m

2 stops

5:55 pm - 3:45 pm

DUB

SAN

29h 50m

1 stop

$427Lufthansa

Sun, Feb 15 - Tue, Feb 24

5:35 pm - 5:10 pm

SAN

DUB

15h 35m

1 stop

10:50 am - 3:45 pm

DUB

SAN

36h 55m

1 stop

$442Lufthansa

Sun, Feb 15 - Tue, Feb 24

5:15 pm - 4:55 pm

SAN

DUB

15h 40m

1 stop

9:50 am - 8:50 pm

DUB

SAN

19h 00m

1 stop

$449Multiple Airlines

Mon, Apr 27 - Wed, May 6

6:00 pm - 5:25 pm

SAN

DUB

15h 25m

1 stop

8:50 am - 5:10 pm

DUB

SAN

15h 20m

1 stop

$452British Airways

Thu, Mar 5 - Thu, Mar 12

5:15 pm - 4:55 pm

SAN

DUB

15h 40m

1 stop

9:50 am - 8:50 pm

DUB

SAN

19h 00m

2 stops

$453Multiple Airlines

Sun, Apr 26 - Tue, May 5

4:45 pm - 5:00 pm

SAN

DUB

16h 15m

1 stop

8:35 am - 2:55 pm

DUB

SAN

14h 20m

1 stop

$455British Airways

Tue, Apr 28 - Tue, May 5

1:00 pm - 8:15 am

SMF

DUB

35h 15m

2 stops

9:50 am - 8:42 pm

DUB

SMF

42h 52m

2 stops

$459Air Canada

Sun, Apr 26 - Wed, May 6

1:00 pm - 8:15 am

SMF

DUB

35h 15m

2 stops

9:50 am - 8:42 pm

DUB

SMF

42h 52m

2 stops

$461Air Canada

Sun, Apr 26 - Wed, May 6

7:00 am - 10:40 am

SMF

DUB

19h 40m

1 stop

9:50 am - 3:18 pm

DUB

SMF

37h 28m

2 stops

$464United Airlines

Wed, Apr 8 - Tue, Apr 21

7:00 am - 7:20 am

SMF

DUB

16h 20m

1 stop

9:50 am - 3:20 pm

DUB

SMF

13h 30m

1 stop

$467United Airlines

Tue, Apr 28 - Wed, May 6

Icelandair flights from California to Ireland

Our best Icelandair deals on California to Ireland flight tickets

Icelandair

May 5

OAK2:09 pmOakland

39h 06m

2 stops

DUB1:15 pmDublin

May 13

DUB12:15 pmDublin

19h 39m

2 stops

OAK11:54 pmOakland

$736

Icelandair

Feb 4

LAS10:07 amLas Vegas Harry Reid Intl

16h 08m

2 stops

DUB10:15 amDublin

Feb 17

DUB11:30 amDublin

19h 26m

2 stops

LAS10:56 pmLas Vegas Harry Reid Intl

$826

Brussels Airlines flights from California to Ireland

Our best Brussels Airlines deals on California to Ireland flight tickets

Brussels Airlines

Mar 4

SNA10:51 amSanta Ana J. Wayne/Orange Cnty

13h 19m

1 stop

DUB8:10 amDublin

Mar 8

DUB9:30 amDublin

14h 58m

1 stop

SNA4:28 pmSanta Ana J. Wayne/Orange Cnty

$738

Brussels Airlines

Feb 19

SNA10:51 amSanta Ana J. Wayne/Orange Cnty

13h 19m

1 stop

DUB8:10 amDublin

Feb 22

DUB10:40 amDublin

19h 50m

1 stop

SNA10:30 pmSanta Ana J. Wayne/Orange Cnty

$771

Brussels Airlines

Feb 12

SNA6:45 amSanta Ana J. Wayne/Orange Cnty

17h 25m

1 stop

DUB8:10 amDublin

Feb 15

DUB10:40 amDublin

16h 17m

1 stop

SNA6:57 pmSanta Ana J. Wayne/Orange Cnty

$1,245

Fly from

Fly to

Route

Depart

Return

Price

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Sun 2/15

11:05 am-5:10 pm

2 stops22h 05m

Dublin

Tue 2/24

5:55 pm-3:45 pm

1 stop29h 50m

$427

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Sun 2/15

5:35 pm-5:10 pm

1 stop15h 35m

Dublin

Tue 2/24

10:50 am-3:45 pm

1 stop36h 55m

$442

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Mon 4/27

5:15 pm-4:55 pm

1 stop15h 40m

Dublin

Wed 5/6

9:50 am-8:50 pm

1 stop19h 00m

$449

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Thu 3/5

6:00 pm-5:25 pm

1 stop15h 25m

Dublin

Thu 3/12

8:50 am-5:10 pm

1 stop15h 20m

$452

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Sun 4/26

5:15 pm-4:55 pm

1 stop15h 40m

Dublin

Tue 5/5

9:50 am-8:50 pm

2 stops19h 00m

$453

San DiegoDublin

SAN - DUB

SANDUB

San Diego

Tue 4/28

4:45 pm-5:00 pm

1 stop16h 15m

Dublin

Tue 5/5

8:35 am-2:55 pm

1 stop14h 20m

$455

SacramentoDublin

SMF - DUB

SMFDUB

Sacramento Intl

Sun 4/26

1:00 pm-8:15 am

2 stops35h 15m

Dublin

Wed 5/6

9:50 am-8:42 pm

2 stops42h 52m

$459

SacramentoDublin

SMF - DUB

SMFDUB

Sacramento Intl

Sun 4/26

1:00 pm-8:15 am

2 stops35h 15m

Dublin

Wed 5/6

9:50 am-8:42 pm

2 stops42h 52m

$461

SacramentoDublin

SMF - DUB

SMFDUB

Sacramento Intl

Wed 4/8

7:00 am-10:40 am

1 stop19h 40m

Dublin

Tue 4/21

9:50 am-3:18 pm

2 stops37h 28m

$464

SacramentoDublin

SMF - DUB

SMFDUB

Sacramento Intl

Tue 4/28

7:00 am-7:20 am

1 stop16h 20m

Dublin

Wed 5/6

9:50 am-3:20 pm

1 stop13h 30m

$467

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 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 Ireland?

In general, February is the cheapest month to fly from California to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $590. If you aren’t able to travel to Ireland during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $600.

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

The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $730. This is often the case because there is less demand to fly during this day of the week. Flights from California to Ireland on a Saturday will generally be more expensive and average around $843. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Ireland is in the evening. momondo users have found flights departing from California to Ireland in the evening for as low as $770. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around $812.

What is the cheapest California to Ireland flight route?

Fly from San Francisco to Dublin for the best California - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $738 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from California for as low as $662 on momondo.

What cabin class options are available on California to Ireland flights?

There are 4 cabin classes available to choose from on California to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on California to Ireland flights?

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

Cheap California to Ireland flight deals and tips

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

Best Price Found	$378
Fastest flight time	9h 45m
Direct flights	Every day
Airports in Ireland	77 airports

The best one-way flight to Ireland from California in the past 72 hours is $378. The best round-trip flight deal from California to Ireland found on momondo in the last 72 hours is $638.

The fastest flight from California to Ireland takes 9h 45m

Direct flights go from California to Ireland every day.

There are 77 airports in Ireland. From California there are direct flights to Dublin (DUB).

Search flight deals

When did momondo last update prices for flights from California to Ireland?
Prices for flights from California to Ireland are updated daily.
How many operators does momondo search for flights from California to Ireland?
As of February 2026, there are 16 operators available to choose from for flights from California to Ireland.
How old do you have to be to fly from California to Ireland?
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 California to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from California to Ireland?
Based on momondo bookings for flights between California and Ireland, the leading plane model is Airbus A330-300, making up 41.18% of the total bookings. Other popular models include Airbus A330 with 13.17%, Boeing 777 with 7.22%, and Boeing 777-300ER with 7.21%.

Best airlines flying from California to Ireland

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

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom $203	Free Cancellation	Rating 7.2 3,254 reviews	Search WestJet flights
JetBlue	PriceFrom $415	Free Cancellation	Rating 7.2 2,892 reviews	Search JetBlue flights
Scandinavian Airlines	PriceFrom $421	Free Cancellation	Rating 7.3 1,676 reviews	Search Scandinavian Airlines flights
TAP AIR PORTUGAL	PriceFrom $431	Free Cancellation	Rating 7.1 2,133 reviews	Search TAP AIR PORTUGAL flights
KLM	PriceFrom $433	Free Cancellation	Rating 7.7 1,446 reviews	Search KLM flights
British Airways	PriceFrom $434	Free Cancellation	Rating 6.7 7,709 reviews	Search British Airways flights
Delta	PriceFrom $454	Free Cancellation	Rating 7.9 8,129 reviews	Search Delta flights
Air Canada	PriceFrom $457	Free Cancellation	Rating 7.1 10,673 reviews	Search Air Canada flights
United Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 9,227 reviews	Search United Airlines flights
American Airlines	PriceFrom $485	Free Cancellation	Rating 7.2 11,211 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from California to Ireland. momondo saves you time and could save you money on your trip.

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

Flights from California to Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from California to Ireland.

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

Price alerts on flights to 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 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 3/3

Tue 3/10

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland

Popular cities in Ireland

Flights to Dublinfrom $289

Flights to Shannon, Clarefrom $354

Flights to Corkfrom $397

Flights to Milltown (Kerry)from $451

Flights to Knockfrom $616

Flights to Donegalfrom $699

Cheap flights from California to Ireland from $237

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 Ireland departing on 2/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from California to Ireland

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Icelandair flights from California to Ireland

Our best Icelandair deals on California to Ireland flight tickets

Brussels Airlines flights from California to Ireland

Our best Brussels Airlines deals on California to Ireland flight tickets

momondo Fare Finder

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

See travel insights to Ireland from

How to get the cheapest flight ticket from California to Ireland

What is the cheapest month to fly to Ireland?

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

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

What is the cheapest California to Ireland flight route?

Fly from San Francisco to Dublin for the best California - Ireland flight prices

How far in advance should I book a flight to Ireland?

What cabin class options are available on California to Ireland flights?

There are 4 cabin classes available to choose from on California to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on California to Ireland flights?

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

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

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from California to Ireland

What airlines fly to Ireland?

How many flights depart from California to Ireland on average per day?

7 flights are operational daily from California to Ireland as of February 2026. The most popular departure time for this route is 5:00PM, with 62% of flights per day taking off in the afternoon.

How many flights depart from California to Ireland on average per week?

As of February 2026, there are 51 flights per week flying from California to Ireland. The most common day of the week flights depart is Tue, with 16% of flights taking off on this day.

How long is the flight from California to Ireland?

Cheap California to Ireland flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Ireland

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

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

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

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

What is the most popular plane model from California to Ireland?

Best airlines flying from California to Ireland

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

Why use momondo?

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

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

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

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

An easier way to manage your 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular cities in Ireland

Popular flights according to clicks in the last 7 days on momondo