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Cheap flights from Ireland to California from £278

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LAX
2 Feb — 9 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to California

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to California
Explore the most affordable flight options available from Ireland to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 January 2026.

Sat 21/215:10DUB - ONT
2 stops38h 57mBritish Airways
Mon 2/314:39ONT - DUB
2 stops21h 01mBritish Airways
Deal found 2/1£337
Tue 17/220:40DUB - SNA
2 stops33h 16mBritish Airways
Mon 2/312:47SNA - DUB
2 stops22h 53mBritish Airways
Deal found 2/1£337
Thu 15/108:50DUB - LAS
1 stop13h 25mDelta
Sat 31/107:00LAS - DUB
2 stops17h 00mDelta
Deal found 3/1£360
Thu 5/208:50DUB - LAS
1 stop13h 25mDelta
Sun 8/209:35LAS - DUB
2 stops19h 05mDelta
Deal found 3/1£364
Sat 17/105:55DUB - LAS
2 stops22h 31mDelta
Sat 31/107:00LAS - DUB
2 stops17h 00mDelta
Deal found 2/1£365
Wed 4/205:55DUB - LAS
2 stops19h 46mDelta
Sun 8/206:15LAS - DUB
2 stops18h 30mDelta
Deal found 2/1£368
Thu 5/205:55DUB - LAS
2 stops18h 51mDelta
Wed 11/211:57LAS - DUB
2 stops16h 43mDelta
Deal found 2/1£369
Mon 12/113:25DUB - LAS
1 stop32h 50mMultiple Airlines
Mon 26/107:00LAS - DUB
2 stops16h 50mMultiple Airlines
Deal found 1/1£370
Thu 29/108:50DUB - SJC
2 stops21h 59mBritish Airways
Thu 5/216:25SJC - DUB
2 stops18h 10mBritish Airways
Deal found 31/12£374
Sun 15/217:15DUB - SFO
2 stops29h 20mScandinavian Airlines
Sun 22/216:40SFO - DUB
2 stops18h 55mScandinavian Airlines
Deal found 1/1£382
Thu 29/111:30DUB - SFO
2 stops35h 05mScandinavian Airlines
Thu 5/216:40SFO - DUB
2 stops17h 30mScandinavian Airlines
Deal found 1/1£383
Mon 26/1012:30DUB - SFO
2 stops34h 05mScandinavian Airlines
Mon 2/1116:40SFO - DUB
2 stops34h 05mScandinavian Airlines
Deal found 2/1£385

Find flight deals from Ireland to California

Keep the following information in mind while searching for Ireland to California flight deals. Data was last updated 3 January 2026.

Round-trip from

£337

One-way from

£278

Popular in

July

Cheapest in

February

Average price

£451

Good round-trip deal

£427 or less

Good one-way deal

£257 or less
British Airways
  • British Airways
  • 21/2-27/2
  • 4 total stops
  • 64h 49m total
  • Ireland to California
Search Deals
26/1
  • 26/1
  • 3 total stops
  • 47h 41m total
  • Ireland to California
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£76 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Ireland to California.
Search Deals
Price to beat on a one-way flight from Ireland to California.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to California 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, Cheapflights users made 858,174 searches. Data last updated 3 January 2026.
Use the filters below to find and compare flights from Ireland to California that are best for you.

Fly from

Ireland

Fly to

California

Route

Depart

Return

Price

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Fri 27/2

23:58-09:50

2 stops25h 52m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Mon 2/3

14:39-19:40

2 stops21h 01m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 22/2

10:45-22:07

2 stops19h 22m

Ontario

Sun 1/3

10:56-19:40

2 stops24h 44m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sat 21/2

15:10-22:07

2 stops38h 57m

Ontario

Sat 28/2

17:02-18:40

2 stops17h 38m

£337

DublinOntario

DUB - ONT

DUBONT

Dublin

Sun 22/2

10:45-22:07

2 stops19h 22m

Ontario

Fri 27/2

23:58-09:50

2 stops25h 52m

£337

DublinSanta Ana

DUB - SNA

DUBSNA

Dublin

Sun 22/2

20:40-21:56

2 stops33h 16m

Santa Ana J. Wayne/Orange Cnty

Sun 1/3

14:53-19:40

2 stops20h 47m

£337

DublinSanta Ana

DUB - SNA

DUBSNA

Dublin

Tue 17/2

20:40-21:56

2 stops33h 16m

Santa Ana J. Wayne/Orange Cnty

Sat 28/2

07:45-12:45

2 stops21h 00m

£337

DublinLas Vegas

DUB - LAS

DUBLAS

Dublin

Thu 15/1

05:55-14:15

1 stop16h 20m

Las Vegas Harry Reid Intl

Sat 31/1

13:20-15:45

2 stops18h 25m

£360

DublinLas Vegas

DUB - LAS

DUBLAS

Dublin

Thu 22/1

08:50-14:15

1 stop13h 25m

Las Vegas Harry Reid Intl

Sat 28/2

09:39-08:45

1 stop15h 06m

£363

DublinLas Vegas

DUB - LAS

DUBLAS

Dublin

Thu 22/1

05:55-14:15

1 stop16h 20m

Las Vegas Harry Reid Intl

Sat 7/2

07:19-08:45

2 stops17h 26m

£363

Flights are sorted by cheapest return flights first.

Deals found on 1/1

Showing 1-10 of 60 results
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Best time to book a flight from Ireland to California

Have a flexible travel schedule? Discover the best time to fly to California from Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ireland to California

What is the cheapest month to book a flight from Ireland to California?

Currently, October is the cheapest month in which you can book a flight from Ireland to California (average of £323). Flying from Ireland to California in July is currently the most expensive (average of £516). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IE to CA?

Find hourly flight availability from Ireland to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 January 2026.

When flying from Ireland to California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated 3 January 2026.
Read reviews from past customers who have flown with United Airlines, American Airlines, andAer Lingus from Ireland to California. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,136 reviews
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
11,081 reviews
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Aer Lingus
7.2
Good
1,419 reviews
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Air Canada
7.1
Good
10,581 reviews
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
British Airways
6.7
Okay
7,641 reviews
United Airlines
7.4
Good
9,136 reviews
Check prices

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

Comfort

7.3

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Ireland to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Ireland to California flight route?

    The Ireland to California flight path was viewed by 303 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ireland to California?

    For as low as £363, British Airways can have you in California from Ireland in 13h 25m. The distance between Ireland and California is about 4938 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Ireland to California that include hotel bookings?

    Yes. In addition to deals on Ireland to California flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ireland to California?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to California.

  • Can I find deals for business class flights from Ireland to California?

    Yes. Cheapflights offers flight deals from Ireland to California by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ireland to California?

    Currently, October is the cheapest month in which you can book a flight from Ireland to California (average of £323). Flying from Ireland to California in July is currently the most expensive (average of £516). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ireland to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Ireland to California

Discover the top 10 airlines that operate flights from Ireland to California. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£313Average£389FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
British AirwaysCheapest£319Average£478FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£325Average£500FlexibilityNo cancel feeOn-time75%
Search KLM flights
IberiaCheapest£339Average£522FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest£350Average£555FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£358Average£574FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
LufthansaCheapest£394Average£505FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£405Average£560FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air FranceCheapest£412Average£560FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£437Average£614FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to California?

Cheapflights makes it easy to find Ireland to California flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Ireland to California?

Cheapflights helps you find that perfect flight to California from Ireland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ireland to California with no change fees?

Certainly. Search results for flights to California from Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ireland to California become cheaper?

Yes, Cheapflights offers price alerts on Ireland to California flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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