Question 1

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

Accepted Answer

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to San Francisco. Millions of users trust and use momondo every year so you are in good company.

Question 2

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

Accepted Answer

momondo does allow users to show only those flights to San Francisco which offer a flexible booking policy as well as other useful filters and features.

Question 3

How can momondo help me find flights to San Francisco?

Accepted Answer

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as filter your options to help you make an informed choice when booking flights to San Francisco.

Question 4

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

Accepted Answer

Yes. momondo can track flight prices for San Francisco and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

Question 5

When is it best to fly to San Francisco to go sightseeing?

Accepted Answer

The best time to plan to fly to San Francisco to go sightseeing would be when the temperature is not unbearable and the chance of rain is only moderate. Considering those guidelines, January, February, or December seem like the best times of year to plan your visit.

Question 6

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

Accepted Answer

The best time to book a flight to San Francisco from Ireland is 54 days out, which is when prices tend to be around €647. However, in the past 72 hours, people saw flights from Ireland for as low as €449.

Question 7

Is there an alternative airport near San Francisco?

Accepted Answer

Those flying to San Francisco could potentially find better pricing at Oakland Airport (18 km from San Francisco city centre), Concord Buchanan Fld Airport (38 km from San Francisco city centre), Napa County Airport (49 km from San Francisco city centre), San Jose Airport (62 km from San Francisco city centre) or Santa Rosa Sonoma County Airport (89 km from San Francisco city centre) depending on the month and departure airport.

Question 8

Is there a cheaper alternative to flying into San Francisco?

Accepted Answer

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in San Francisco is San Jose Airport where the average price is €165. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

Question 9

Which airlines fly to San Francisco?

Accepted Answer

Based on our data, the most popular airlines that fly to San Francisco from Ireland are Aer Lingus, JetBlue, United Airlines and American Airlines. There may also be other airline options depending on where in Ireland you’re flying from.

Question 10

KLM Flights to San Francisco

Accepted Answer

30 KLM flights head to San Francisco on average each week. Most will be flying from New York John F Kennedy Intl to San Francisco, the most popular route that KLM operates to San Francisco. Prices vary based on when and where you fly from - the cheapest KLM flight to San Francisco found in the past 3 days on momondo was €411, departing from Dublin. KLM is the most popular choice on momondo for this route and has been scored 7.8/10 by 1,544 of our users.

Question 11

Scandinavian Airlines Flights to San Francisco

Accepted Answer

Scandinavian Airlines flight deals to San Francisco start from €381 - this is the best price found recently on momondo, and was a return journey departing from Dublin. Over any normal week, Scandinavian Airlines flight prices are typically higher, but vary depending on where you fly from - Los Angeles is the most popular Scandinavian Airlines departure point to San Francisco so generally has the most availability. Scandinavian Airlines is scored a 7.4/10 in 1,895 reviews.

Question 12

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

Accepted Answer

Prices for flights to San Francisco Airport are refreshed on a daily basis.

Question 13

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

Accepted Answer

As of July 2026, there are 9 operators available to choose from for flights to San Francisco Airport.

Question 14

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

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to San Francisco Airport.

Question 15

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

Accepted Answer

The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Question 16

What is the cheapest month to fly to San Francisco?

Accepted Answer

The cheapest month to fly to San Francisco from Ireland is in January. Flight prices, which tend to average around €480, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to San Francisco from Ireland during November instead. Flights to San Francisco in November, while not as cheap as those in January, still average around €493.

Question 17

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 €523. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday 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 €780.

Question 18

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 €673. 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 €712 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 19

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 10h 55m on average. If you fly from Cork (another popular airport in Ireland) to San Francisco, then the average flight time is 15h 15m.

Question 20

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 €647 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 €544 on momondo.

CHEAPEST MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	January	26% cheaper	Flying from Dublin to San Francisco costs on average just €480 in January
MOST EXPENSIVE MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	August	35% more expensive	It costs about €875 for flights to San Francisco from Dublin in August
MOST POPULAR MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	December	246% more users visited	More momondo users searched in flights to San Francisco from Dublin in December than any other month

Best One-Way Price	€368
Best Round-Trip Price	€473
Fastest flight time	23h 03m
Popular in	August

€368 Cheap flights to San Francisco

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Francisco departing on 4/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ireland to San Francisco

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Recent direct flight deals from Ireland to San Francisco

momondo Fare Finder

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

See travel insights to San Francisco from

San Francisco flights insights and trends

What is the cheapest month to fly to San Francisco?

What is the absolute cheapest flight to San Francisco?

See prices from:

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?

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

How long does it take to fly to San Francisco?

Cheapest flights to San Francisco

Find the cheapest flights to San Francisco from your nearest city or airport

Cheap San Francisco flight deals and tips

Best One-Way Price

Best Round-Trip Price

Fastest flight time

Popular in

Frequently asked questions about flying to San Francisco

Travelling to a place near San Francisco?

Why use momondo?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organise 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.

Find better results for your trip to San Francisco

Popular Flights to San Francisco

Popular routes according to searches in the past day on momondo

Popular Cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Airports servicing Ireland

Fly your favourite airline to San Francisco

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to San Francisco

Explore popular destinations other users love

According to popular flight searches on momondo this year