Cheap flights from California to Ireland from $220
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 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
What is the cheapest month to fly to Ireland?
In general, January 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 $546. If you aren’t able to travel to Ireland during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $546.
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 $732. 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 $852. 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 afternoon. momondo users have found flights departing from California to Ireland in the afternoon for as low as $666. 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 morning when prices are around $849.
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 22 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $720 when searching 22 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 $642 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.
What is the cheapest airline that flies from California to Ireland?
WestJet, Iberia, and TAP AIR PORTUGAL are the most popular carriers operating from California to Ireland
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 69% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 17 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from California to Ireland on average per day?
6 flights are operational daily from California to Ireland as of June 2025. The most popular departure time for this route is 5:00PM, with 53% of flights per day taking off in the afternoon.
How many flights depart from California to Ireland on average per week?
As of June 2025, there are 42 flights per week flying from California to Ireland. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.
Cheap California to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from California to Ireland
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 June 2025, there are 17 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, making up 24.33% of the total bookings. Other popular models include Airbus A330-300 with 17.36%, Boeing 777 with 13.18%, and Boeing 777-300ER with 9.53%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $303 | Free Cancellation | Rating 7.3 1,388 reviews | |||
| PriceFrom $428 | Free Cancellation | Rating 6.8 7,152 reviews | |||
| PriceFrom $431 | Free Cancellation | Rating 7.1 1,890 reviews | |||
| PriceFrom $435 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom $452 | Free Cancellation | Rating 7.5 1,628 reviews | |||
| PriceFrom $463 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $467 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $479 | Free Cancellation | Rating 6.6 7,019 reviews | |||
| PriceFrom $479 | Free Cancellation | Rating 7.8 1,363 reviews | |||
| PriceFrom $488 | Free Cancellation | Rating 7.4 8,801 reviews |
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.