Cheap flights from Ireland to San Francisco from $326

If you aren’t able to travel to San Francisco during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $567.

The cheapest day to depart from Ireland to San Francisco is on a Tuesday when prices can be found for as low as $539. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $892.

Our data shows that the cheapest Ireland to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $674. Flights at noon are often more expensive with an average ticket price of $749.

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

You are more likely to see cheaper flights to San Francisco from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $698 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Ireland for as low as $605 on momondo.

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

JetBlue and Aer Lingus are the most popular carriers operating from Ireland to San Francisco

Aer Lingus, American Airlines and United Airlines are the top three most popular airlines that fly to San Francisco from Ireland according to our data. Aer Lingus is the first choice among our users, with 79% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 3 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Ireland and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Aer Lingus have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

The number of flights available between Ireland and San Francisco is 2 per day as of March 2026. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

As of March 2026, there are 20 flights per week flying from Ireland to San Francisco. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.