$402 Find Cheap Flights from Ireland to California - Compare and Save

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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?

The cheapest ticket to California from Ireland found in the last 5 days was to Los Angeles, at $695 round-trip. The most popular route is Dublin (DUB) to Los Angeles (LAX) and the cheapest round-trip airline ticket found on this route in the last 5 days was $695.

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

The cheapest month for flights from Ireland to California is February, when tickets cost $575 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $832 and $817 respectively.

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

The cheapest time of day to fly to California is generally in the evening, when round-trip flights cost $794 on average. The most expensive time of day to fly to California is generally in the evening, which is peak travel time and where the average cost of a ticket is $794.

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

To get a below average price on the flight from Ireland to California, you should book around 2 weeks before departure, which saves you about 2% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Which is the cheapest airport to fly into in California?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in California is Los Angeles Los Angeles Airport (LAX), with an average flight price of $710.

Good to know

Low season

January

Cheapest flight

$402
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Dublin to Las Vegas

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 travelers 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 round-trip 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 Tuesday where round-trip tickets can be as cheap as $691. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $855 on average.

Reviews of the top airlines flying from Ireland to California

 
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.
7.3
Aer LingusOverall score based on 1711 reviews
8.1Crew
7.2Comfort
7.0Entertainment
6.7Food
7.5Boarding
Airline reviews

On time departure and arrival at LAX - good inflight entertainment - all basic seats on every airline right now begin to feel small after 10 hours!!

8.0 ExcellentSusie, Jul 2026
Read more Aer Lingus reviews

On time departure and arrival at LAX - good inflight entertainment - all basic seats on every airline right now begin to feel small after 10 hours!!

Boarding was fine, difficult to understand the guy over the speaker though so we were unsure when exactly to board until they updated the monitor by the gate. Flight itself was fine, nice flight attendants, seats were comfortable enough, good selection of entertainment on the screens. Other airlines at a similar price point have included wifi though, at a minimum messaging, for free, so that was a little disappointing to not have that. But otherwise fine. Food was pretty decent, nice hot meal, good drink selection, nice snacks. Bathrooms were ok, could've been cleaned a little more often, but they were never bad.

On time, only a little turbulence, very competent and caring attendants. Clear information.

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

The seats needs to be comfortables, at least please add more padding to the seats.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

The plane was late getting to Ontario by half an hour which makes it inconvenient when you have people waiting for you.

I have to sit in the middle for more than five hours because the first flight was delayed. Terrible experience. No more American Airlines.

The boarding process was slow and we had a delay on the tarmac, not the fault of the airline. They had ZERO food options available for purchase which shouldn't happen.

Once again the staff of American Airlines is kind, helpful, efficient, and professional.

Awful! We boarded and then sat on the plane for 50 mins before having to deplane due to a maintenance issue which should have been addressed before boarding. Then we had to change terminals as there was no other plane for us at the current terminal. Then we waited another 2 and a half hours to board again only to wait for 50 mins on the plane again for the snacks to be brought from the broken plane. And once we were on the flight we still only got the complimentary cookie and soda or water. No food vouchers provided even though we had waited over 3 hours for our flight.

Our experience with American Airlines was extremely disappointing and honestly made an already exhausting international journey much worse. After flying all the way from Melbourne and dealing with significant jet lag, the American Airlines experience at LAX was the last thing we needed. The terminal and boarding area felt very old and uncomfortable, with little to no air conditioning and only old fans running in the area. Boarding was also through outdoor stairs rather than a jet bridge, which felt especially inconvenient after such a long journey. Even though we were traveling First Class, the onboard experience was surprisingly poor. There were no meaningful snack options, no decent coffee available to order, and the aircraft was so small that there was barely enough overhead space for carry-on luggage. The staff experience was also disappointing and lacked the warmth or attentiveness we had experienced on our international flights. To make matters worse, the flight departed late, extending an already very long travel day. Overall, the combination of the outdated terminal, uncomfortable boarding process, limited First Class service, small aircraft, poor staff experience, and delay made this an extremely unpleasant final leg of our journey. It significantly worsened our exhaustion and jet lag rather than making the connection home easier. Unfortunately, this experience was bad enough that I do not plan to travel with American Airlines again in the future.

No food. I paid over $1.000 for my ticket for nuts and espresso beans.

My flight in Dallas had maintenance issues. Which caused us to missed our connecting flight in LA. We had to stay overnight in Los Angeles. American Airlines booked us a hotel. The hotel was the Holiday Inn. It was horrible. The whole hotel smelled like weed and there were people rambling all night long up and down the hallways. The carpets in the hallway and the room has stains. There was dirt on the floor. It was so nasty that I slept in my clothes.

I had a comfortable and enjoyable experience. The entertainment options were plentiful, the food was appetizing, the snacks were tasty, and the staff was friendly, professional, and helpful.

This was my first flight on Aer Lingus and it was great. The plane wasn't full so I could move to a seat with extra room. The food was pretty good for airline food and the staff was nice and attentive. I enjoyed the media provided during my 10 hour flight. We arrived home early and it's always good to be home!

Everything you need to know for your flight to California

Cabin class types available on flights to California