Which airlines fly to San Francisco?

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

Delta Flights to San Francisco

33 Delta flights head to San Francisco on average each week. Most will be flying from Atlanta Hartsfield-Jackson to San Francisco, the most popular route that Delta operates to San Francisco. Prices vary based on when and where you fly from - the cheapest Delta flight to San Francisco found in the past 3 days on momondo was €293, departing from Dublin. Delta is the most popular choice on momondo for this route and has been scored 7.9/10 by 7,961 of our users.

KLM Flights to San Francisco

KLM flight deals to San Francisco start from €472 - this is the best price found recently on momondo, and was a return journey departing from Cork. Over any normal week, KLM flight prices are typically higher, but vary depending on where you fly from - Seattle/Tacoma Intl is the most popular KLM departure point to San Francisco so generally has the most availability. KLM is scored a 7.8/10 in 1,386 reviews.

How long does it take to fly to San Francisco?

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 13h 40m.

€342 Cheap Flights to San Francisco in 2025/26

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Find the cheapest flights from Ireland to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap return flights

04:25 - 14:35DUB-SFO

18h 10m1 stop

16:35 - 23:20SFO-DUB

22h 45m1 stop

€456TAP AIR PORTUGAL

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Sun, 23 Nov - Wed, 3 Dec

19:05 - 14:35DUB-SFO

27h 30m1 stop

18:55 - 11:45SFO-DUB

56h 50m2 stops

€460Scandinavian Airlines

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Wed, 19 Nov - Sat, 6 Dec

12:30 - 16:35DUB-SFO

11h 05mdirect

17:20 - 11:25SFO-DUB

10h 05mdirect

€480Aer Lingus

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Fri, 31 Oct - Fri, 7 Nov

08:50 - 15:00DUB-SFO

14h 10m1 stop

20:40 - 19:40SFO-DUB

15h 00m1 stop

€482British Airways

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Fri, 19 Dec - Sun, 4 Jan

12:30 - 15:35DUB-SFO

11h 05mdirect

17:20 - 11:25SFO-DUB

10h 05mdirect

€483Aer Lingus

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Fri, 7 Nov - Tue, 11 Nov

08:50 - 15:00DUB-SFO

14h 10m1 stop

20:40 - 18:40SFO-DUB

14h 00m1 stop

€484British Airways

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Mon, 24 Nov - Sat, 6 Dec

11:45 - 19:23DUB-SFO

15h 38m1 stop

16:30 - 14:15SFO-DUB

13h 45m1 stop

€491American Airlines

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Wed, 15 Oct - Sun, 19 Oct

09:20 - 15:28DUB-SFO

14h 08m1 stop

09:20 - 08:30SFO-DUB

15h 10m1 stop

€493United Airlines

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Wed, 15 Oct - Sat, 25 Oct

09:20 - 15:28DUB-SFO

14h 08m1 stop

23:56 - 07:10SFO-DUB

23h 14m1 stop

€496United Airlines

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Fri, 3 Oct - Mon, 13 Oct

07:50 - 15:00SNN-SFO

15h 10m1 stop

18:30 - 16:45SFO-SNN

15h 15m1 stop

€619American Airlines

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Thu, 5 Mar - Mon, 9 Mar

Fly from

Route

Depart

Return

Price

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Sun 23/11

04:25-14:35

1 stop18h 10m

San Francisco

Wed 3/12

16:35-23:20

1 stop22h 45m

€456

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 19/11

19:05-14:35

1 stop27h 30m

San Francisco

Sat 6/12

18:55-11:45

2 stops56h 50m

€460

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 31/10

12:30-16:35

Nonstop11h 05m

San Francisco

Fri 7/11

17:20-11:25

Nonstop10h 05m

€480

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 19/12

08:50-15:00

1 stop14h 10m

San Francisco

Sun 4/1

20:40-19:40

1 stop15h 00m

€482

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 7/11

12:30-15:35

Nonstop11h 05m

San Francisco

Tue 11/11

17:20-11:25

Nonstop10h 05m

€483

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Mon 24/11

08:50-15:00

1 stop14h 10m

San Francisco

Sat 6/12

20:40-18:40

1 stop14h 00m

€484

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 15/10

11:45-19:23

1 stop15h 38m

San Francisco

Sun 19/10

16:30-14:15

1 stop13h 45m

€491

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Wed 15/10

09:20-15:28

1 stop14h 08m

San Francisco

Sat 25/10

09:20-08:30

1 stop15h 10m

€493

DublinSan Francisco

DUB - SFO

DUBSFO

Dublin

Fri 3/10

09:20-15:28

1 stop14h 08m

San Francisco

Mon 13/10

23:56-07:10

1 stop23h 14m

€496

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/3

07:50-15:00

1 stop15h 10m

San Francisco

Mon 9/3

18:30-16:45

1 stop15h 15m

€619

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

San Francisco flights insights and trends

Explore insights for your San Francisco flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Ireland is in February. Flight prices, which tend to average around €482, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to San Francisco from Ireland during November instead. Flights to San Francisco in November, while not as cheap as those in February, still average around €495.

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?

On average, the least expensive day to fly to San Francisco from Ireland is on a Monday. momondo users have found tickets for Monday departures for as low as €560. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday 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 €673.

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

According to our data, the cheapest time of day to fly to San Francisco is in the evening. momondo users have found flights departing from Ireland to San Francisco in the evening for as low as €517. 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 afternoon when prices are €932 on average. Flights to San Francisco from Ireland in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 €592 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 €502 on momondo.

Cheapest flights to San Francisco

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

Find flights from Dublin to San Francisco

CHEAPEST MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	February	19% cheaper	Flying from Dublin to San Francisco costs on average just €482 in February
MOST EXPENSIVE MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	July	29% more expensive	It costs about €768 for flights to San Francisco from Dublin in July
MOST POPULAR MONTH TO FLY TO SAN FRANCISCO FROM DUBLIN	July	453% more users visited	More momondo users searched in flights to San Francisco from Dublin in July than any other month

Cheap San Francisco flight deals and tips

Summary info about San Francisco flight prices, duration and airlines

Best One-Way Price	€342
Best Round-Trip Price	€456
Fastest flight time	10h 55m
Popular in	July

The best one-way flight price to San Francisco from Ireland in the last 72 hours is €342 (Cork to San Francisco).

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The best round-trip flight price to San Francisco from Ireland in the last 72 hours is €456 (Dublin to San Francisco).

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The fastest flight to San Francisco from Ireland takes 10h 55m (Dublin to San Francisco).

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July has the highest demand for flights to San Francisco, with a 17% price increase on average.

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Frequently asked questions about flying to San Francisco

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

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.

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

The best time to book a flight to San Francisco from Ireland is 65 days out, which is when prices tend to be around €592. However, in the past 72 hours, people saw flights from Ireland for as low as €465.

Is there an alternative airport near San Francisco?

Those flying to San Francisco could potentially find better pricing at Oakland Airport (19 km from San Francisco city centre), Concord Buchanan Fld Airport (38 km from San Francisco city centre), Napa County Airport (48 km from San Francisco city centre), San Jose Airport (64 km from San Francisco city centre) or Santa Rosa Sonoma County Airport (87 km from San Francisco city centre) depending on the month and departure airport.

Is there a cheaper alternative to flying into San Francisco?

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 €159. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

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

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

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

As of September 2025, there are 11 operators available to choose from for flights to San Francisco Airport.

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

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.

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

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.

Santa Cruz

Millbrae

Walnut Creek

Alameda

Menlo Park

Why use momondo?

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

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.

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

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.

How can momondo help me find flights to San Francisco?

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.

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

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.