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 €619. However, in the past 72 hours, people saw flights from Ireland for as low as €440.

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 €162. 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, American Airlines, British Airways and United 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

22 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 €403, departing from Dublin. KLM is the most popular choice on momondo for this route and has been scored 7.8/10 by 1,517 of our users.

Question 11

United Airlines Flights to San Francisco

Accepted Answer

United Airlines flight deals to San Francisco start from €651 - this is the best price found recently on momondo, and was a return journey departing from Dublin. Over any normal week, United Airlines flight prices are typically higher, but vary depending on where you fly from - Denver Intl is the most popular United Airlines departure point to San Francisco so generally has the most availability. United Airlines is scored a 7.4/10 in 9,734 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 May 2026, there are 10 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 €466, 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 €492.

Question 17

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 18h 26m.

Question 18

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 €619 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 €504 on momondo.

Question 19

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 €501. 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 €736.

Question 20

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 at midday. momondo users have found flights departing from Ireland to San Francisco at midday for as low as €649. 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 in the morning when prices are €653 on average. Flights to San Francisco from Ireland in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

CHEAPEST MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	January	25% cheaper	Flying from Dublin to San Francisco costs on average just €466 in January
MOST EXPENSIVE MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	August	36% more expensive	It costs about €848 for flights to San Francisco from Dublin in August
MOST POPULAR MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	July	325% more users visited	More momondo users searched in flights to San Francisco from Dublin in July than any other month

Best One-Way Price	€427
Best Round-Trip Price	€539
Fastest flight time	27h 20m
Popular in	August

€427 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 28/5. 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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