£301 Find Cheap Flights from Ireland to California

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to California

 
These are the airlines KAYAK users have selected most often from within our search results for flights to California
These are the airlines KAYAK users have selected most often from within our search results for flights to California
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KAYAK's insights & trends for flights to California

Get data-powered insights and trends for flights to California to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to California?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to California from Ireland found in the last 72 hours was to Los Angeles, at £564 return. The most popular route is Dublin (DUB) to Los Angeles (LAX) and the cheapest return airline ticket found on this route in the last 72 hours was £564.

What is the cheapest month to fly from Ireland to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ireland to California, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ireland to California is February, when tickets cost £422 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is £670 and £599 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to California, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Ireland to California, you should book around 6 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.


Good to know - Cheap tickets from Ireland to California

Low seasonJanuary
High seasonJuly
Cheapest flight£248
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (27% more expensive on average)
Flight from Dublin to Los Angeles

FAQs for booking flights from Ireland to California

  • How does KAYAK find such low prices on flights from Ireland to California?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ireland to California.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ireland to California?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ireland to California is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ireland to California?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Ireland to California with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ireland to California?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Ireland to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to California?

    Based on KAYAK data, the cheapest day to fly to California is Friday when return tickets can be as cheap as £530. On the other hand, the most expensive day to fly is Saturday, when return prices are £619 on average.

  • What is the cheapest time of day to fly to California?

    The cheapest time of day to fly to California is generally in the morning, when round-trip flights cost £609 on average. Morning departures are around 17% cheaper than evening flights, on average. The most expensive time of day to fly to California is generally at night, which is peak travel time and where the average cost of a ticket is £763.

Top 5 airlines serving from Ireland to California

 
See real verified KAYAK customer reviews for airlines flying to California. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to California. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ireland to California? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8790 reviews
7.0Entertainment
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
Airline reviews

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

8.0 ExcellentLawrence, Jun 2025HNL - SFO
Read more United Airlines reviews

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

Its good expeince but in enternteiment please be like you tube the music i like or movie

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Long 5 hour and 45 min flight and only one drink service and cookie snack

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

Good flight, friendly crew and overall - good service on United Airlines.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

Mixed experienced. Nice staff. Spacious 787 better than cramped Airbus, though my seat was broken. The bad: Way overpriced ticket and charged for food despite 6 hr flight.

Terrible all around. Flight was late and airplane was very uncomfortable. The crew were unhelpful and hid in the back. Did zero work. No entertainment.

I booked and paid extra for exit door seats also pre paid for my luggage air Canada changed plains and I never got what I paid for and they made me pay for luggage again they also did this to my wife. They are the most unorganized company I have ever dealt with. I am sure I will never see the extra money I paid for the seats or the recharge for the luggage. They are subsidized by the taxpayers and don’t give a dam just a horrible way to do business

Overcharged by either United or Air Canada. Abuse of access to my credit/debit card.

Your crew was so so so wonderful Only thing sound be great if you kept some phone chargers and converters rest 👌👌👌👌

I would definitely use a Linus again, the price was right, the service is excellent. No delays. Wish I had a direct flight from my hometown Detroit.

At check-in the unmanned machines said QR code was invalid so had to queue for over an hour to check in bags

i used to fly aer Lingus regularly but due to price - poor seating etc i have been using other carriers - i now have aer lingus in my state and the price is always the highest - i have flown to Ireland 11 times in last 24 months and have not used Hartford because of price

Nicest staff I’ve experienced on a plane! Good food, great entertainment, and they gave out little blankets that my kids loved. All in all, great experience.

Seats weren't very comfortable for a long haul flight but the service made up for it.

The Glasgow to Dublin route was very efficiently boarded, flight and landing and disembarkation were all super smooth. Dublin to JFK flight I was very pleasantly surprised overall. This was my first time on Aer Lingus and having already come off the short regional flight I was curious to know how the international flight would go. Aircraft was solid, entertainment options were better than expected, flight crew were experienced and operated like clockwork. Main entree left a little something to be desired but the snack was very tasty. Boarding and disembarkation again very smooth and pilots got us in earlier than expected. Would definitely fly again

Unfortunately the flight was delayed for 50 min. Just as we were about to board so that was a drag. The boarding was average. The bag check in process was new to us and efficient. And the flight itself was smooth- basically no turbulence.

I liked how they looked after couples by providing a row of 4 seats if available.

It was ok not that much because I always travel with Emirates airlines, Etihad, airlines, Qatar airlines compare to them food and comfortable was too low . Staff was good . Helpful

Noted in last review. Good to know, though air Lingus on European flights does not offer any food or drink, even though we were on the plane for 3 1/2 hours from Naples to Dublin everything you had to purchase even water.

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

Book cheap flights from Ireland to California

Recent return flight deals

 
These are the cheapest return flights to California found on KAYAK in the last 72 hours.
4/10Sat
2 stopsScandinavian Airlines
28h 25mDUB-SFO
23/10Thu
1 stopScandinavian Airlines
29h 45mSFO-DUB
£301
17/9Wed
1 stopTAP AIR PORTUGAL
35h 45mDUB-SFO
22/9Mon
1 stopTAP AIR PORTUGAL
17h 45mSFO-DUB
£318
26/9Fri
1 stopUnited Airlines
14h 08mDUB-SFO
1/10Wed
2 stopsUnited Airlines
19h 45mSFO-DUB
£397
12/9Fri
1 stopUnited Airlines
18h 18mDUB-SFO
19/9Fri
1 stopUnited Airlines
16h 35mSFO-DUB
£398
25/9Thu
1 stopBritish Airways
16h 55mDUB-LAS
8/10Wed
1 stopBritish Airways
13h 20mLAS-DUB
£399
6/10Mon
2 stopsAmerican Airlines
16h 01mDUB-LAS
18/10Sat
2 stopsAmerican Airlines
16h 53mLAS-DUB
£402
31/10Fri
1 stopBritish Airways
16h 05mDUB-LAS
10/11Mon
1 stopBritish Airways
27h 00mLAS-DUB
£403
26/9Fri
2 stopsAmerican Airlines
18h 19mDUB-ONT
4/10Sat
2 stopsAmerican Airlines
19h 30mONT-DUB
£404
26/9Fri
directAer Lingus
10h 55mDUB-SFO
1/10Wed
directAer Lingus
10h 00mSFO-DUB
£420
4/9Thu
directAer Lingus
10h 55mDUB-SFO
10/9Wed
1 stopAer Lingus
13h 20mSFO-DUB
£465

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to California found on KAYAK in the last 72 hours.
24/6Tue
1 stop
30h 25mDUB-LAX
£248
24/6Tue
2 stops
36h 30mDUB-LAS
£277
16/11Sun
1 stopAer Lingus
18h 35mDUB-LAS
£383
2/8Sat
1 stopAer Lingus
16h 35mDUB-LAS
£471
14/9Sun
2 stopsBritish Airways
19h 22mDUB-ONT
£481
15/7Tue
directBritish Airways
10h 55mDUB-SFO
£639
24/6Tue
2 stopsAmerican Airlines
18h 14mDUB-ONT
£739
25/6Wed
directAmerican Airlines
10h 55mDUB-SFO
£748
16/11Sun
3 stopsUnited Airlines
34h 45mDUB-LAS
£756
16/11Sun
3 stopsUnited Airlines
34h 45mDUB-LAS
£758

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Last minute flights to California

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to California that are departing in the next 10 days.
17/6Tue
multi-stopBritish Airways
15h 05mDUB-LAX
8/7Tue
multi-stopBritish Airways
13h 50mLAX-DUB
£403
17/6Tue
multi-stopScandinavian Airlines
37h 15mDUB-SFO
24/6Tue
multi-stopScandinavian Airlines
32h 10mSFO-DUB
£484
17/6Tue
multi-stopScandinavian Airlines
37h 15mDUB-SFO
23/6Mon
multi-stopScandinavian Airlines
14h 35mSFO-DUB
£506
17/6Tue
directAmerican Airlines
11h 00mDUB-LAX
8/7Tue
multi-stopAmerican Airlines
13h 50mLAX-DUB
£522
17/6Tue
directAer Lingus
10h 55mDUB-SFO
24/6Tue
directAer Lingus
10h 00mSFO-DUB
£525
17/6Tue
directAer Lingus
10h 55mDUB-SFO
25/6Wed
directAer Lingus
10h 00mSFO-DUB
£528
17/6Tue
multi-stopAir Canada
17h 34mDUB-LAX
8/7Tue
multi-stopAir Canada
16h 45mLAX-DUB
£530
16/6Mon
multi-stopUnited Airlines
18h 50mDUB-SFO
30/6Mon
multi-stopUnited Airlines
34h 09mSFO-DUB
£568
16/6Mon
multi-stopUnited Airlines
18h 50mDUB-SFO
1/7Tue
multi-stopUnited Airlines
15h 45mSFO-DUB
£570
17/6Tue
multi-stopAir Canada
19h 52mDUB-SFO
25/6Wed
multi-stopAir Canada
16h 35mSFO-DUB
£665

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Everything you need to know for your flight to California

Cabin class types available on flights to California

Cabin classes available on flights to California. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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