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

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

What airlines fly 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 76% 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.

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 in the early afternoon have, in the past, seen delays more frequently in comparison.

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

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

How long does it take to fly to San Francisco?

Flight times from Ireland to San Francisco vary, but if you’re flying out of Dublin and flying into San Francisco (one of the most popular routes), then the duration is 11h on average. Another popular route from Ireland to San Francisco is flying from Cork to San Francisco, which will take roughly 13h 30m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

As of February 2026, there are 16 flights per week flying from Ireland to San Francisco. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

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

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.

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

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

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

As of February 2026, there are 3 operators available to choose from for flights from Ireland to San Francisco Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to San Francisco Airport.

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

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$334 Cheap Flights from Ireland to San Francisco in 2026

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Find the cheapest flights from Ireland to San Francisco

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ireland to San Francisco

Enter your travel dates to find the best prices.

1:25 pm - 12:50 pm

DUB

SFO

30h 25m

1 stop

6:20 am - 7:45 am

SFO

DUB

18h 25m

1 stop

$524Multiple Airlines

Tue, Mar 10 - Sun, Mar 15

5:55 am - 11:25 pm

DUB

SFO

25h 30m

2 stops

4:40 pm - 3:45 pm

SFO

DUB

16h 05m

1 stop

$525Delta

Tue, Mar 3 - Sun, Mar 8

5:55 am - 11:50 am

DUB

SFO

13h 55m

1 stop

10:00 pm - 7:45 am

SFO

DUB

25h 45m

1 stop

$527Delta

Wed, Feb 18 - Sat, Feb 21

12:30 pm - 3:35 pm

DUB

SFO

11h 05mnonstop

5:20 pm - 11:25 am

SFO

DUB

10h 05mnonstop

$533Aer Lingus

Sat, Feb 14 - Sat, Feb 21

11:30 am - 7:21 pm

DUB

SFO

15h 51m

1 stop

6:00 am - 8:40 am

SFO

DUB

19h 40m

2 stops

$538American Airlines

Fri, Feb 20 - Sun, Mar 8

5:55 pm - 3:00 pm

DUB

SFO

29h 05m

1 stop

9:40 pm - 7:55 am

SFO

DUB

27h 15m

1 stop

$541British Airways

Sat, Mar 7 - Tue, Mar 17

6:15 am - 12:50 pm

ORK

SFO

13h 35m

1 stop

2:55 pm - 11:25 pm

SFO

ORK

25h 30m

1 stop

$589KLM

Wed, Mar 18 - Wed, Mar 25

6:15 am - 12:50 pm

ORK

SFO

13h 35m

1 stop

9:15 am - 10:45 am

SFO

ORK

18h 30m

2 stops

$594KLM

Wed, Mar 18 - Wed, Mar 25

2:45 pm - 9:40 am

SNN

SFO

26h 55m

2 stops

6:15 am - 6:20 am

SFO

SNN

17h 05m

2 stops

$699American Airlines

Thu, Mar 5 - Tue, Mar 10

7:30 am - 10:33 pm

SNN

SFO

23h 03m

2 stops

7:30 pm - 11:20 am

SFO

SNN

31h 50m

1 stop

$732British Airways

Thu, Apr 23 - Mon, Apr 27

Delta flights from Ireland to San Francisco

Our best Delta deals on Ireland to San Francisco flight tickets

Delta

Feb 9

DUB1:25 pmDublin

30h 25m

1 stop

SFO11:50 amSan Francisco

Feb 22

SFO9:55 amSan Francisco

18h 45m

2 stops

DUB12:40 pmDublin

$525

Delta

Feb 18

DUB5:55 amDublin

13h 55m

1 stop

SFO11:50 amSan Francisco

Feb 21

SFO10:00 pmSan Francisco

25h 45m

1 stop

DUB7:45 amDublin

$527

Delta

Feb 14

DUB5:55 amDublin

25h 30m

2 stops

SFO11:25 pmSan Francisco

Feb 27

SFO10:50 pmSan Francisco

24h 55m

1 stop

DUB7:45 amDublin

$528

United Airlines flights from Ireland to San Francisco

Our best United Airlines deals on Ireland to San Francisco flight tickets

United Airlines

Feb 13

DUB9:30 amDublin

36h 08m

1 stop

SFO1:38 pmSan Francisco

Feb 27

SFO11:59 pmSan Francisco

24h 11m

1 stop

DUB8:10 amDublin

$749

United Airlines

Apr 23

SNN12:30 pmShannon

18h 00m

2 stops

SFO10:30 pmSan Francisco

Apr 27

SFO10:10 amSan Francisco

16h 05m

2 stops

SNN10:15 amShannon

$770

United Airlines

Apr 23

SNN12:30 pmShannon

17h 07m

1 stop

SFO9:37 pmSan Francisco

Apr 27

SFO12:40 pmSan Francisco

13h 35m

1 stop

SNN10:15 amShannon

$771

Fly from

Fly to

Route

Depart

Return

Price

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Tue 3/10

1:25 pm-12:50 pm

1 stop30h 25m

San Francisco

Sun 3/15

6:20 am-7:45 am

1 stop18h 25m

$524

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Tue 3/3

5:55 am-11:25 pm

2 stops25h 30m

San Francisco

Sun 3/8

4:40 pm-3:45 pm

1 stop16h 05m

$525

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 2/18

5:55 am-11:50 am

1 stop13h 55m

San Francisco

Sat 2/21

10:00 pm-7:45 am

1 stop25h 45m

$527

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 2/14

12:30 pm-3:35 pm

Nonstop11h 05m

San Francisco

Sat 2/21

5:20 pm-11:25 am

Nonstop10h 05m

$533

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 2/20

11:30 am-7:21 pm

1 stop15h 51m

San Francisco

Sun 3/8

6:00 am-8:40 am

2 stops19h 40m

$538

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sat 3/7

5:55 pm-3:00 pm

1 stop29h 05m

San Francisco

Tue 3/17

9:40 pm-7:55 am

1 stop27h 15m

$541

CorkSan Francisco

ORK - SFO

ORKSFO

Cork

Wed 3/18

6:15 am-12:50 pm

1 stop13h 35m

San Francisco

Wed 3/25

2:55 pm-11:25 pm

1 stop25h 30m

$589

CorkSan Francisco

ORK - SFO

ORKSFO

Cork

Wed 3/18

6:15 am-12:50 pm

1 stop13h 35m

San Francisco

Wed 3/25

9:15 am-10:45 am

2 stops18h 30m

$594

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/5

2:45 pm-9:40 am

2 stops26h 55m

San Francisco

Tue 3/10

6:15 am-6:20 am

2 stops17h 05m

$699

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/23

7:30 am-10:33 pm

2 stops23h 03m

San Francisco

Mon 4/27

7:30 pm-11:20 am

1 stop31h 50m

$732

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ireland to San Francisco

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

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $585.

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

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 $864.

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

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 $718. Flights at noon are often more expensive with an average ticket price of $739.

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?

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 $697 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 $593 on momondo.

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

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.

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

You could potentially save up to 26% on your flight if you consider stops on a Ireland to San Francisco flight.

Cheap Ireland to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to San Francisco

Best Price Found	$588
Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Ireland in the past 72 hours is $588. The best round-trip flight deal from Ireland to San Francisco found on momondo in the last 72 hours is $528.

The fastest flight from Ireland to San Francisco takes 11h 00m

Direct flights go from Ireland to San Francisco every day.

There is 1 airport in San Francisco. From Ireland there are direct flights to San Francisco (SFO).

Search flight deals

When did momondo last update prices for flights from Ireland to San Francisco Airport?
Prices for flights from Ireland to San Francisco Airport were last updated today.
How many operators does momondo search for flights from Ireland to San Francisco Airport?
As of February 2026, there are 3 operators available to choose from for flights from Ireland to San Francisco Airport.
How old do you have to be to fly from Ireland to San Francisco Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Ireland to San Francisco?
momondo data reveals that the most frequently booked plane model on the route from Ireland to San Francisco is Airbus A330-300, representing 52.86% of all bookings. The subsequent popular models are Airbus A330-200 at 21.51%, Airbus A330 at 20.45%, and Airbus A220-300 at 2.26%.

Best airlines flying from Ireland to San Francisco

Compare and see reviews for airlines that fly from Ireland to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $482	Free Cancellation	Rating 7.2 1,445 reviews	Search Aer Lingus flights
United Airlines	PriceFrom $613	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
American Airlines	PriceFrom $749	Free Cancellation	Rating 7.2 11,224 reviews	Search American Airlines flights

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Bodega Bay

Roseville

Hayward

Calistoga

Santa Clara

Walnut Creek

Berkeley

Big Sur

Fremont

Half Moon Bay

Daly City

Salinas

Vallejo

Sunnyvale

Livermore

Turlock

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Ireland.

Can I find flights from Ireland to San Francisco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ireland to San Francisco flights to just show those with flexible booking policies.

How can momondo help me find flights from Ireland to San Francisco?

momondo helps you find the best flight between Ireland and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ireland to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from Ireland to San Francisco from $288

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 4/23. 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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Delta flights from Ireland to San Francisco

Our best Delta deals on Ireland to San Francisco flight tickets

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Our best United Airlines deals on Ireland to San Francisco flight tickets

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Use the filters below to find and compare flights from Ireland to San Francisco that are best for you.

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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?

If you aren’t able to travel to San Francisco during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $585.

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

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 $864.

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

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 $718. Flights at noon are often more expensive with an average ticket price of $739.

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 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.

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

You could potentially save up to 26% on your flight if you consider stops on a Ireland to San Francisco flight.

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

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

What 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 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 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.

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

According to our data, Aer Lingus have had the least number of 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?

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

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

As of February 2026, there are 16 flights per week flying from Ireland to San Francisco. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

How long does it take to fly to San Francisco?

Cheap Ireland to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to San Francisco

Best Price Found

Fastest flight time

Direct flights

Airports in San Francisco

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

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

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?

What is the most popular plane model from Ireland to San Francisco?

Best airlines flying from Ireland to San Francisco

Compare and see reviews for airlines that fly from Ireland to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to San Francisco?

Can I find flights from Ireland to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from Ireland to San Francisco?

I’m not ready to book a flight from Ireland to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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