$325 Find Cheap Flights from Ireland to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 5/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Ireland to San Francisco

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ireland to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ireland to San Francisco

Thu, Aug 27 - Mon, Sep 7
Scandinavian Airlines Logo
7:50 pm - 2:40 pm
DUB
-
SFO
26h 50m
2 stops
Scandinavian Airlines Logo
4:45 pm - 11:50 am
SFO
-
DUB
35h 05m
1 stop
$565Scandinavian Airlines
Thu, Apr 16 - Sun, Apr 26
Scandinavian Airlines Logo
11:10 am - 2:40 pm
DUB
-
SFO
35h 30m
2 stops
Scandinavian Airlines Logo
4:45 pm - 10:10 am
SFO
-
DUB
33h 25m
2 stops
$569Scandinavian Airlines
Mon, Aug 24 - Sun, Aug 30
Scandinavian Airlines Logo
7:50 pm - 2:40 pm
DUB
-
SFO
26h 50m
2 stops
Scandinavian Airlines Logo
4:45 pm - 10:10 am
SFO
-
DUB
33h 25m
2 stops
$571Scandinavian Airlines
Wed, Apr 29 - Wed, May 6
Multiple Airlines Logo
9:30 am - 7:15 pm
DUB
-
SFO
17h 45m
1 stop
Multiple Airlines Logo
7:30 pm - 6:00 pm
SFO
-
DUB
14h 30m
1 stop
$574Multiple Airlines
Thu, Apr 23 - Wed, May 6
Delta Logo
6:15 am - 11:45 am
ORK
-
SFO
13h 30m
1 stop
Delta Logo
3:05 pm - 2:40 pm
SFO
-
ORK
15h 35m
1 stop
$633Delta
Thu, Apr 23 - Wed, May 6
Multiple Airlines Logo
6:15 am - 11:45 am
ORK
-
SFO
13h 30m
1 stop
Multiple Airlines Logo
3:05 pm - 2:40 pm
SFO
-
ORK
15h 35m
1 stop
$635Multiple Airlines
Thu, Apr 23 - Wed, May 6
Delta Logo
6:15 am - 11:45 am
ORK
-
SFO
13h 30m
1 stop
Delta Logo
1:09 pm - 4:35 pm
SFO
-
ORK
19h 26m
2 stops
$637Delta
Tue, Apr 28 - Tue, May 5
Aer Lingus Logo
4:50 pm - 3:55 pm
SNN
-
SFO
31h 05m
2 stops
Aer Lingus Logo
5:40 pm - 8:35 pm
SFO
-
SNN
18h 55m
2 stops
$747Aer Lingus
Mon, Apr 13 - Thu, Apr 23
Aer Lingus Logo
9:15 pm - 3:55 pm
SNN
-
SFO
26h 40m
2 stops
Aer Lingus Logo
5:35 pm - 8:35 pm
SFO
-
SNN
19h 00m
2 stops
$749Aer Lingus
Thu, May 7 - Mon, May 11
American Airlines Logo
1:45 pm - 11:59 pm
SNN
-
SFO
18h 14m
2 stops
American Airlines Logo
5:14 am - 5:25 am
SFO
-
SNN
16h 11m
2 stops
$780American Airlines
Booking Insights

KAYAK's insights & trends for flights to San Francisco

Get data-powered insights and trends for flights to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to San Francisco?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to San Francisco was found on the route from Dublin, at $565 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $87 in the last 3 days.

What is the cheapest day to fly to San Francisco?

The average price of all round-trip flights to San Francisco clicked on KAYAK for each day over the last 12 months.

Based on KAYAK data, the cheapest day to fly to San Francisco is Tuesday where round-trip tickets can be as cheap as $539. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $892 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to San Francisco is January, where tickets cost $542 on average for return flights. On the other hand, the most expensive months are July and August, where the average cost of tickets from Ireland is $913 and $888 respectively. For one-way flights, the best month to travel is January with an average price of $542.

What is the cheapest time of day to fly to San Francisco?

The average price for all round-trip flights to San Francisco depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to San Francisco is generally in the morning, when round-trip flights cost $674 on average. The most expensive time of day to fly to San Francisco is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $749.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Dublin $575 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price, you should book around 2 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$325
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Dublin to San Francisco

FAQs - booking San Francisco flights

  • What is the cheapest flight to San Francisco?

    In the last 3 days, the cheapest flight deal to San Francisco was found on the route from Dublin, at $565 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $87 in the last 3 days.

  • How far is San Francisco Airport from central San Francisco?

    You’ll need to travel 12 miles to reach the San Francisco city center from San Francisco Airport.

  • What is the name of San Francisco’s airport?

    There is only 1 airport in San Francisco, called San Francisco Airport (SFO). It can also be referred to as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $632. The cheapest price found on KAYAK in the last 2 weeks cost $534 and departed from Dublin Airport.

  • How does KAYAK find such low prices on flights to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to San Francisco

  • Looking for cheap airfare to San Francisco? 25% of our users found round-trip tickets to San Francisco for the following prices or less: From Dublin $936
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Reviews of the top 3 airlines serving from Ireland to San Francisco

 
See real verified KAYAK customer reviews for airlines flying to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Ireland to San Francisco. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9433 reviews
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
7.3Comfort
Airline reviews

Terrible experience! delay 2 time and say i dont have ticket

2.0 Mediocrephuong, Mar 2026
TPE - SFO
Read more United Airlines reviews

Terrible experience! delay 2 time and say i dont have ticket

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

Flight attendants had a little attitude. Food tastes no good.

Overall we had a good experience during our flight from San Francisco to Houston.

Good flight. However, when booked flight with United, assumed the layover included by United in San Francisco of 1 hr and 40 minutes was sufficient . Not so and would recommend at least 2 hours or more. Needed to go through US immigration (very long lineups), then pick up bags, take all the way to another terminal, running because we did not have sufficient time. We made the flight because they held the door for us but luggage didn’t follow.

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Very poor. The flight was delayed from Toronto because some forget to do there job . I got to my connecting gate in San Francisco 10 minutes before the departure.but this didn’t let me board even though the flight was still there for an other 30 minutes. The the gentleman at the unite airline desk told me that they usually wait for passengers but air Canada called and told them not to we I been rerouted to Manila instead of Hong Kong . In San Francisco they mad me check in my carryon bag . I was told the it will directly go yo ho chi minn cuyt but I was told that by the Vietnams airline desk that’s not there I’m 10 hours behind my scheduled flight and looks like I I’m going without baggage. I don’t have a chance of catching ..

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Mean flight attendant. I wanted to reuse my plastic cup, but he (Matthew) said he can't for safety. I then said "I don't want water then" and he poured me a glass. I hope Matthew gets herpes and spends the rest of his life poor, lonely, and homeless.

All aspects were excellent - it helped that the flight was only 2/3 full and I had no one sitting in my row. The Pre-check (US Passport Control and Customs) in Dublin made everything so easy when we arrived in Chicago.

I love the direct flights. It saves a lot of hassle and allows immigration and customs in Ireland, making arrival much easier.

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

We were upgraded to Business Class. So comfortable with great service and food options

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

The comfort of Business Class made this trip far more comfortable. I was indeed surprised when I asked one of the flight attendant to help me set up my "bed", she responded that "We don't make beds in Business Class any longer...only First Class" I believe her name was Giselle, but I'm not certain. She did instruct me how to adjust the seat, place the hooded cover and I clearly understood how to place the blanket and the cover. Additionally, the meal I was served (a beef dish) was almost inedible. The beef was tough and odd tasting. I didn't mention it as I was hoping to quickly settle down and try to get some sleep.

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
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Everything you need to know for your flight to San Francisco

Information on the airport you'll fly into in San Francisco