$437 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 5/17. 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

Wed, Jun 3 - Tue, Sep 8
Scandinavian Airlines Logo
12:40 pm - 2:40 pm
DUB
-
SFO
34h 00m
1 stop
Scandinavian Airlines Logo
4:45 pm - 11:50 am
SFO
-
DUB
35h 05m
1 stop
$560Scandinavian Airlines
Thu, Jun 4 - Wed, Sep 9
Scandinavian Airlines Logo
12:40 pm - 2:40 pm
DUB
-
SFO
34h 00m
1 stop
Scandinavian Airlines Logo
4:45 pm - 11:50 am
SFO
-
DUB
35h 05m
1 stop
$573Scandinavian Airlines
Thu, Jun 4 - Tue, Sep 8
Scandinavian Airlines Logo
12:40 pm - 2:40 pm
DUB
-
SFO
34h 00m
1 stop
Scandinavian Airlines Logo
4:45 pm - 11:50 am
SFO
-
DUB
35h 05m
1 stop
$578Scandinavian Airlines
Wed, May 13 - Sun, May 17
Finnair Logo
9:30 am - 11:59 pm
DUB
-
SFO
22h 29m
1 stop
Finnair Logo
1:30 pm - 11:50 am
SFO
-
DUB
14h 20m
1 stop
$592Finnair
Sat, May 23 - Wed, May 27
Delta Logo
1:05 pm - 10:49 pm
SNN
-
SFO
17h 44m
1 stop
Delta Logo
10:30 pm - 11:10 am
SFO
-
SNN
28h 40m
1 stop
$659Delta
Sat, May 23 - Wed, May 27
KLM Logo
1:05 pm - 10:49 pm
SNN
-
SFO
17h 44m
1 stop
KLM Logo
8:50 am - 11:10 am
SFO
-
SNN
18h 20m
1 stop
$660KLM
Sat, May 23 - Wed, May 27
Delta Logo
1:05 pm - 10:49 pm
SNN
-
SFO
17h 44m
1 stop
Delta Logo
1:05 pm - 11:10 am
SFO
-
SNN
14h 05m
1 stop
$661Delta
Mon, May 11 - Tue, May 26
KLM Logo
3:25 pm - 6:00 pm
ORK
-
SFO
34h 35m
1 stop
KLM Logo
1:45 pm - 4:40 pm
SFO
-
ORK
18h 55m
1 stop
$754KLM
Fri, Jun 5 - Sat, Jun 20
Aer Lingus Logo
7:10 am - 1:50 pm
ORK
-
SFO
14h 40m
1 stop
Aer Lingus Logo
4:35 pm - 11:50 pm
SFO
-
ORK
23h 15m
1 stop
$871Aer Lingus
Thu, Jun 11 - Thu, Jun 18
Aer Lingus Logo
2:30 pm - 3:50 pm
CFN
-
SFO
33h 20m
1 stop
Aer Lingus Logo
5:35 pm - 2:00 pm
SFO
-
CFN
12h 25m
1 stop
$1,044Aer Lingus
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 Cork, at $560 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $97 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 Saturday, where round-trip prices are $816 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 $933 and $930 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 $641 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 $783.

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 $631 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 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$437
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 32% increase in price.
Flight from Cork 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 Cork, at $560 return. The most popular connection is from Los Angeles to San Francisco and KAYAK users have found round-trip deals for as low as $97 in the last 3 days.

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

    You’ll need to travel 11 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 $788. The cheapest price found on KAYAK in the last 2 weeks cost $615 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 $667
  • 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 airlines flying 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 9679 reviews
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
7.7Boarding
Airline reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

6.0 GoodAnonymous, Apr 2026
HND - SFO
Read more United Airlines reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Meals were poor and service rendered on return flight was mediocre as compared to the flight we took to Germany earlier where the attendants were more attentive, energetic, and mindful of passengers' needs. Thumbs up to crew of UA 58. Thumbs down to UA 59..

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

we did a return flight from Paris CDG to SFO. This trip was much better than the departing flight SFO to CDG. The food was better quality, the crew was nicer, and the interior of the plane seemed cleaner.

I sat in the first row behind first class. There was plenty of legroom. The entertainment was great. I saw two excellent movies and one episode of a sitcom. Also enjoyed the flight tracker.

OK overall. Flight was delayed Crew on flight was good

On time, only a little turbulence, very competent and caring attendants. Clear information.

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

My issue is with the SkyWest terminal. The flight was not listed on the main airport flight screen list, and I had to do a Google search to locate the terminal and gate. We had to ask several airport employees where to locate the phantom gate. The airport did not provide adequate signage and was confusing. When we arrived, there was one vendor providing services that quickly closed, leaving zero options for food and drink while we waited hours for our delayed flight. The crew that assisted with check-in and boarding was VERY friendly.

Economy seats a bit small but other than that it was all good.

No complimentary drinks or snacks offered on a 2 hour flight was disappointing but everything else went well

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.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Calistoga
Marina
Rohnert Park
Emeryville
Pacifica
Capitola
Millbrae
Campbell
Newark
Novato
Mill Valley
Windsor
Union City
Belmont
West Sacramento
Richmond
American Canyon
Corte Madera
Los Altos
Jenner

Everything you need to know for your flight to San Francisco

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