SNN - SFO

$499 Find Cheap Flights from Shannon to San Francisco - Compare and Save

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Everything you should know

Cheapest round-trip
$716
Typical prices: $751-$979
British Airways
Sat 2/10Fri 2/16
SNN - SFO • 1 stop
Cheapest one-way
$499
Typical prices: $607-$1,020
Multiple Airlines
Sun 12/16
SNN - SFO • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Shannon and San Francisco. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
April
Cheapest • 21% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
London Heathrow (LHR)
Cheapest • Avg $831 (round-trip)
Newark (EWR)
Shortest trip • 14h 27m (one-way)
Insights
Insights
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Flight Deals

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

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

Recent round-trip flight deals from Shannon to San Francisco

Wed, Feb 10 - Tue, Feb 16
British Airways Logo
7:50 am - 2:55 pmSNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
British Airways Logo
5:25 pm - 7:25 pmSFO  San Francisco-SNN Shannon
18h 00m1 stop London Heathrow
$716British Airways
Wed, Feb 10 - Tue, Feb 16
Multiple Airlines Logo
8:05 pm - 2:55 pmSNN  Shannon-SFO San Francisco
26h 50m1 stop London Heathrow
Multiple Airlines Logo
5:25 pm - 4:45 pmSFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
$810Multiple Airlines
Sat, Mar 13 - Sat, Mar 20
British Airways Logo
7:50 am - 2:55 pmSNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
British Airways Logo
6:25 pm - 4:45 pmSFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
$834British Airways
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
7:50 am - 2:55 pmSNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
Multiple Airlines Logo
5:25 pm - 4:45 pmSFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
$836Multiple Airlines
Thu, Dec 3 - Wed, Dec 9
Multiple Airlines Logo
7:50 am - 2:55 pmSNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
Multiple Airlines Logo
5:25 pm - 7:25 pmSFO  San Francisco-SNN Shannon
18h 00m1 stop London Heathrow
$837Multiple Airlines
Thu, Dec 3 - Wed, Dec 9
Multiple Airlines Logo
5:30 pm - 11:45 amSNN  Shannon-SFO San Francisco
26h 15m2 stops London Heathrow Amsterdam Schiphol
Multiple Airlines Logo
4:40 pm - 4:45 pmSFO  San Francisco-SNN Shannon
16h 05m1 stop London Heathrow
$838Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
5:30 pm - 11:45 amSNN  Shannon-SFO San Francisco
26h 15m2 stops London Heathrow Amsterdam Schiphol
Multiple Airlines Logo
4:40 pm - 4:45 pmSFO  San Francisco-SNN Shannon
16h 05m1 stop London Heathrow
$840Multiple Airlines
Thu, Dec 3 - Tue, Dec 8
Multiple Airlines Logo
7:50 am - 2:55 pmSNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
Multiple Airlines Logo
5:25 pm - 4:45 pmSFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
$843Multiple Airlines
Thu, Dec 3 - Mon, Dec 7
Multiple Airlines Logo
7:50 am - 6:45 pmSNN  Shannon-SFO San Francisco
18h 55m1 stop London Heathrow
Multiple Airlines Logo
5:25 pm - 7:25 pmSFO  San Francisco-SNN Shannon
18h 00m1 stop London Heathrow
$849Multiple Airlines
Fri, Nov 13 - Tue, Nov 17
American Airlines Logo
2:00 pm - 12:39 amSNN  Shannon-SFO San Francisco
18h 39m2 stops Boston Logan Intl Dallas/Fort Worth
American Airlines Logo
7:21 am - 6:10 amSFO  San Francisco-SNN Shannon
14h 49m1 stop New York John F Kennedy Intl
$854American Airlines
Booking Insights

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

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

How much is a round-trip flight from Shannon to San Francisco?

Round-trip flights from Shannon to San Francisco typically range from $751 to $979. The lowest price found in the past 5 days was $716, on British Airways.

Find deals

Key details for Shannon to San Francisco flights

Cheapest flight

$499
The most popular month to fly with an average 38% increase in travelers.
One-way flight from Shannon to San Francisco

When to book flights from Shannon to San Francisco

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

Your Shannon to San Francisco flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

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

    Two cabin classes are available on flights from Shannon to San Francisco:

    • Economy Class
    • Business Class

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

    A nonstop flight from Shannon to San Francisco takes 00m, covering 5,032 miles.

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

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

    Round-trip flights from Shannon to San Francisco range from $751 to $979, with an average of $901 over the past 12 months. Anything below $751 counts as a good deal.

  • Have flight prices from Shannon to San Francisco changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $716 to $5,840. That means the highest observed fare was about 8x higher than the lowest one.

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

    One-way fares from Shannon to San Francisco are currently lower than usual. Average one-way flight prices are about $552, which is 39% below the typical average for this route.

  • What car rental options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates averaging $63 for economy cars. Top options include:

    • Europcar
    • Thrifty
    • Dollar
    • Hertz
    • Fox

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

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

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

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

    • New York John F Kennedy Intl (JFK) - 38% of one-stop connections
    • London Heathrow (LHR) - 35% of one-stop connections
    • Newark (EWR) - 21% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 6% of one-stop connections

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

    Yes. Flexible dates can save you up to 29% on flights from Shannon to San Francisco. Wednesday is the cheapest departure day at $793 round-trip on average, while Monday is the most expensive at $1,109, a difference of $316.

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

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time at 14h 27m, compared with 14h 51m via Chicago O'Hare Intl (ORD) and 15h 15m via London Heathrow (LHR).

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

    San Francisco is 7 hours behind Shannon (Pacific Time vs Irish Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Francisco?

    Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

Your guide to booking Shannon to San Francisco 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 and avoid flying on Monday. On this route, Wednesday flights average $793, about $316 less than Monday fares (28% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Shannon to San Francisco trip for April. Fares historically average $711 round-trip in that month - typically $362 less than the most expensive month, which is March (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Francisco Airport.

    • Grand Hyatt At Sfo

More options for your flight from Shannon to San Francisco

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