Cheap flights from Ireland to California from £334

If you are unable to visit California during the month of January, then departing from Ireland during the month November is also very affordable. Most momondo users find prices during this month for around £486.

The cheapest day to depart on your flight to California is on a Sunday when prices can be found for as low as £484. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £756.

The cheapest time of day to fly to California is in the afternoon when flights can be purchased for as low as £537. In contrast, the most expensive time of day to depart to California is at midday when prices are around £602.

Fly from Dublin to San Francisco for the best Ireland - California flight prices

You are more likely to see cheaper flights to California from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to California for around £546 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to California from Ireland for as low as £476 on momondo.

There are 4 cabin classes available to choose from on Ireland to California flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, Aer Lingus, and Finnair are the most popular carriers operating from Ireland to California

Aer Lingus, British Airways and Iberia are the top three most popular airlines that fly to California from Ireland according to our data. Aer Lingus is the first choice among our users, with 81% of people opting to fly with this airline when travelling to California. Keep in mind that there are 9 different airlines that fly to California on a routine basis, so you have a few additional options to choose from.

The number of flights available between Ireland and California is 8 per day as of August 2026. The most frequent departure time is 15:00, with 100% of daily flights leaving in the afternoon.

The number of flights available between Ireland and California is 56 per week as of August 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.