Question 1

What is the cheapest Ireland to San Francisco flight route?

Accepted Answer

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

Question 2

Which airline has the best punctuality record on Ireland to San Francisco flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

Question 3

How often are flights from Ireland to San Francisco delayed?

Accepted Answer

Historically, on average around 10% 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.

Question 4

What is the most punctual flight time for Ireland to San Francisco flights?

Accepted Answer

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

Question 5

What is the cheapest time of day to depart on your flight to San Francisco?

Accepted Answer

According to our data, the cheapest time of day to fly to San Francisco is in the morning. momondo users have found flights departing from Ireland to San Francisco in the morning for as low as €609. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €626 on average. Flights to San Francisco from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 6

What is the cheapest airline that flies from Ireland to San Francisco?

Accepted Answer

WestJet, Aer Lingus, and British Airways are the most popular carriers operating from Ireland to San Francisco

Question 7

How many flights depart from Ireland to San Francisco on average per week?

Accepted Answer

The number of flights available between Ireland and San Francisco is 23 per week as of February 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

Question 8

Which airlines fly to San Francisco?

Accepted Answer

Aer Lingus, United Airlines and British Airways 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 67% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 7 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Question 9

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

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

Question 10

How long does it take to fly to San Francisco?

Accepted Answer

The flight from Ireland to San Francisco depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Dublin (a popular airport in Ireland) to San Francisco (the most popular airport in San Francisco), then the flight time is 11h on average. If you fly from Cork (another popular airport in Ireland) to San Francisco, then the average flight time is 13h 50m.

Question 11

How many flights depart from Ireland to San Francisco on average per day?

Accepted Answer

As of February 2026, 3 flights take off from Ireland and land in San Francisco each day. The most common flight departure time for this route is 12:00, with 100% of daily flights taking off in the afternoon.

Question 12

What is the cheapest month to fly to San Francisco?

Accepted Answer

The cheapest month to fly to San Francisco from Ireland is in November. Flight prices, which tend to average around €483, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to San Francisco from Ireland during January instead. Flights to San Francisco in January, while not as cheap as those in November, still average around €494.

Question 13

How far in advance should I book a flight to San Francisco?

Accepted Answer

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 €588 when searching weeks before you fly. 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 €500 on momondo.

Question 14

What is the cheapest day to depart on your flight to San Francisco?

Accepted Answer

On average, the least expensive day to fly to San Francisco from Ireland is on a Sunday. momondo users have found tickets for Sunday departures for as low as €503. However, this price may fluctuate depending on the airline, the season, and holidays. 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 €716.

Question 15

What cabin class options are available on Ireland to San Francisco flights?

Accepted Answer

There are 2 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.

Question 16

Can stopping save me money on Ireland to San Francisco flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Ireland to San Francisco.

Question 17

When did momondo last update prices for flights from Ireland to San Francisco Airport?

Accepted Answer

Prices for flights from Ireland to San Francisco Airport were last updated today.

Question 18

How many operators does momondo search for flights from Ireland to San Francisco Airport?

Accepted Answer

The number of operators available for flights from Ireland to San Francisco Airport is 7 as of February 2026.

Question 19

How old do you have to be to fly from Ireland to San Francisco Airport?

Accepted Answer

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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to San Francisco Airport.

Question 20

What documentation or ID do you need to fly to San Francisco Airport?

Accepted Answer

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	€535
Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom €396	Free Cancellation	Rating 7.7 1,448 reviews	Search KLM flights
Aer Lingus	PriceFrom €435	Free Cancellation	Rating 7.2 1,444 reviews	Search Aer Lingus flights
British Airways	PriceFrom €438	Free Cancellation	Rating 6.7 7,711 reviews	Search British Airways flights
Delta	PriceFrom €507	Free Cancellation	Rating 7.9 8,135 reviews	Search Delta flights
United Airlines	PriceFrom €552	Free Cancellation	Rating 7.4 9,231 reviews	Search United Airlines flights
American Airlines	PriceFrom €567	Free Cancellation	Rating 7.2 11,212 reviews	Search American Airlines flights
Air Canada	PriceFrom €579	Free Cancellation	Rating 7.1 10,676 reviews	Search Air Canada flights

Cheap flights from Ireland to San Francisco from €241

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to San Francisco departing on 29/4. 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 Ireland to San Francisco

What is the cheapest month to fly to San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

What is the cheapest time of day to depart on your flight to San Francisco?

What is the cheapest Ireland to San Francisco flight route?

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

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Ireland to San Francisco flights?

There are 2 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.

Can stopping save me money on Ireland to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Ireland to San Francisco.

What is the cheapest airline that flies from Ireland to San Francisco?

WestJet, Aer Lingus, and British Airways are the most popular carriers operating from Ireland to San Francisco

Which airlines fly to San Francisco?

How often are flights from Ireland to San Francisco delayed?

Historically, on average around 10% 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.

What is the most punctual flight time for Ireland to San Francisco flights?

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

What day of the week experiences the fewest flight delays on this route?

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

Which airline has the best punctuality record on Ireland to San Francisco flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

How many flights depart from Ireland to San Francisco on average per day?

As of February 2026, 3 flights take off from Ireland and land in San Francisco each day. The most common flight departure time for this route is 12:00, with 100% of daily flights taking off in the afternoon.

How many flights depart from Ireland to San Francisco on average per week?

The number of flights available between Ireland and San Francisco is 23 per week as of February 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

How long does it take to fly to San Francisco?

Cheap Ireland to San Francisco flight deals and tips

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When did momondo last update prices for flights from Ireland to San Francisco Airport?

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How old do you have to be to fly from Ireland to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

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