Cheap flights from California to Ireland from $307

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 $623. 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 $674.

The cheapest day to depart on your flight to Ireland is on a Sunday when prices can be found for as low as $874. 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 Tuesday will generally be more expensive and average around $992. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 $812. 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 evening when prices are around $928.

Fly from Los Angeles Los Angeles to Dublin for the best California - Ireland flight prices

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 $837 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 $764 on momondo.

There are 3 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.

British Airways, United Airlines, and Delta are the most popular carriers operating from California 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 73% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 15 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.

8 flights are operational daily from California to Ireland as of September 2026. The most popular departure time for this route is 5:00PM, with 50% of flights per day taking off in the afternoon.

As of September 2026, there are 56 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.