SFO - SNN

€312 Find Cheap Flights from San Francisco to Shannon – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€526
Typical prices: €732-€1,022
United Airlines
Wed 10/10Tue 23/10
SFO - SNN • 1 stop
Cheapest one-way flight
€312
Typical prices: €417-€531
Multiple Airlines
Thu 11/10
SFO - SNN • 3 stops
Direct flights
Not available
There are currently no direct flights between San Francisco and Shannon. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
December
Cheapest • 37% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
London Heathrow (LHR)
Cheapest • Avg €795 (return)
Newark (EWR)
Shortest trip • 14h 35m (one-way)
Insights
Insights
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We hope you enjoy your trip to Shannon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Shannon (SFO-SNN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from San Francisco to Shannon

Sat, 10 Oct - Fri, 23 Oct
United Airlines Logo
23:55 - 10:15SFO  San Francisco-SNN Shannon
26h 20m1 stop Newark
United Airlines Logo
12:30 - 21:47SNN  Shannon-SFO San Francisco
17h 17m2 stops Newark Los Angeles Los Angeles
€526United Airlines
Mon, 28 Sep - Tue, 13 Oct
United Airlines Logo
07:00 - 10:15SFO  San Francisco-SNN Shannon
19h 15m2 stops Las Vegas Harry Reid Intl Newark
United Airlines Logo
12:30 - 22:52SNN  Shannon-SFO San Francisco
18h 22m2 stops Newark Los Angeles Los Angeles
€541United Airlines
Tue, 13 Oct - Tue, 20 Oct
United Airlines Logo
07:00 - 10:15SFO  San Francisco-SNN Shannon
19h 15m1 stop Newark
United Airlines Logo
12:30 - 21:47SNN  Shannon-SFO San Francisco
17h 17m2 stops Newark Los Angeles Los Angeles
€587United Airlines
Mon, 12 Oct - Mon, 19 Oct
United Airlines Logo
21:15 - 10:15SFO  San Francisco-SNN Shannon
29h 00m1 stop Newark
United Airlines Logo
12:30 - 22:52SNN  Shannon-SFO San Francisco
18h 22m2 stops Newark Los Angeles Los Angeles
€600United Airlines
Mon, 5 Oct - Tue, 20 Oct
United Airlines Logo
08:45 - 10:15SFO  San Francisco-SNN Shannon
17h 30m2 stops Denver Intl Newark
United Airlines Logo
12:30 - 21:47SNN  Shannon-SFO San Francisco
17h 17m2 stops Newark Los Angeles Los Angeles
€636United Airlines
Wed, 14 Oct - Sat, 24 Oct
United Airlines Logo
07:00 - 10:15SFO  San Francisco-SNN Shannon
19h 15m2 stops Las Vegas Harry Reid Intl Newark
United Airlines Logo
12:30 - 23:59SNN  Shannon-SFO San Francisco
19h 29m2 stops Newark Los Angeles Los Angeles
€639United Airlines
Tue, 13 Oct - Tue, 20 Oct
United Airlines Logo
13:05 - 10:15SFO  San Francisco-SNN Shannon
13h 10m1 stop Newark
United Airlines Logo
12:30 - 23:32SNN  Shannon-SFO San Francisco
19h 02m1 stop Newark
€640United Airlines
Mon, 28 Sep - Tue, 13 Oct
United Airlines Logo
08:15 - 10:15SFO  San Francisco-SNN Shannon
18h 00m2 stops Boston Logan Intl Newark
United Airlines Logo
12:30 - 23:32SNN  Shannon-SFO San Francisco
19h 02m1 stop Newark
€650United Airlines
Wed, 14 Oct - Sat, 24 Oct
Lufthansa Logo
23:55 - 10:15SFO  San Francisco-SNN Shannon
26h 20m1 stop Newark
Lufthansa Logo
12:30 - 19:14SNN  Shannon-SFO San Francisco
14h 44m1 stop Newark
€656Lufthansa
Mon, 26 Oct - Mon, 2 Nov
Aer Lingus Logo
18:20 - 19:25SFO  San Francisco-SNN Shannon
18h 05m2 stops Dublin London Heathrow
Aer Lingus Logo
20:05 - 15:35SNN  Shannon-SFO San Francisco
27h 30m2 stops London Heathrow Dublin
€681Aer Lingus
Booking Insights

Price, demand, and travel trends for San Francisco to Shannon flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from San Francisco to Shannon with more confidence.

How much is a return flight from San Francisco to Shannon?

Return flights from San Francisco to Shannon start at €526. Prices are below average for this route right now, with typical return fares ranging from €732 to €1,022. The lowest price found in the past 5 days was €526 on United Airlines.

What's the cheapest day of the week to fly from San Francisco to Shannon?

Wednesday is the cheapest day of the week to fly from San Francisco to Shannon and is 19% cheaper than the average day. Sunday is the most expensive day with flight prices 10% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from San Francisco to Shannon?

  • December is the cheapest month to fly from San Francisco to Shannon at €543 return.
  • November (€1,590) and June (€1,016) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 192% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for San Francisco to Shannon flights

Low season

January

Cheapest flight

€312
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly (17% more expensive on average)
Flights from San Francisco to Shannon

When to book flights from San Francisco to Shannon

Are your dates flexible? Find out the best times to travel from San Francisco to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your San Francisco to Shannon flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from San Francisco to Shannon?

    Flights from San Francisco to Shannon usually depart from San Francisco (SFO) and arrive at Shannon (SNN).

  • Which cabin classes can I book on flights from San Francisco to Shannon?

    Only Economy class is available on flights from San Francisco to Shannon.

  • Which airports do connecting flights from San Francisco to Shannon pass through?

    One-stop flights from San Francisco to Shannon most commonly connect through:

    • New York John F Kennedy Intl (JFK) – 37% of one-stop connections
    • London Heathrow (LHR) – 23% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 20% of one-stop connections
    • Newark (EWR) – 14% of one-stop connections

    New York John F Kennedy Intl (JFK) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from San Francisco to Shannon?

    Yes. Being flexible with your travel dates can save you up to 27% on the San Francisco to Shannon route. Wednesday is the cheapest departure day at €704 return on average, while Sunday is the most expensive at €959, a difference of €255. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from San Francisco to Shannon?

    A direct flight from San Francisco to Shannon takes 0h 00m, covering 13,032 km.

  • Do I need a passport to fly from San Francisco to Shannon?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from San Francisco to Shannon looking right now?

    One-way fares from San Francisco to Shannon are currently higher than usual. Average one-way flight prices are about €2,187, which is 382% above the typical average for this route.

  • How much time can I save by choosing a different stopover airport from San Francisco to Shannon?

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time of 14h 35m, compared to 14h 53m via Chicago O'Hare Intl (ORD) and 15h 23m via London Heathrow (LHR).

  • What is the time difference between San Francisco and Shannon?

    Shannon is 8 hours ahead of San Francisco (Irish Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at Shannon Airport (SNN)?

    Shannon Airport (SNN) hosts 5 major car hire companies, with daily rates starting from around €3 for economy cars. Top options include:
    • Budget
    • Sixt
    • Europcar
    • Thrifty
    • Easirent

  • How much should I expect to pay for a San Francisco to Shannon flight?

    Return flights from San Francisco to Shannon range from €732 to €1,022, with an average of €868 over the past 12 months. Anything below €732 counts as a good deal.

Your guide to booking San Francisco to Shannon flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average €704 – about €255 less than Sunday (27% savings) based on the last 12 months.
  • If you can choose when to travel, plan your San Francisco to Shannon trip for December. Fares historically average €543 return in that month – typically €1,047 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Shannon Airport.
    - Park Inn by Radisson Shannon Airport
    - Treacys Oakwood Hotel

More options for your flight from San Francisco to Shannon

Complete your trip to Shannon with a hotel stay or car hire

Car hire in Shannon
Hotels in Shannon
Holidays in Shannon