SNN - SFO

£675 Find Cheap Flights from Shannon to San Francisco – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£675
Typical prices: £561-£731
British Airways
Tue 18/12Fri 28/12
SNN - SFO • 2 stops
Direct 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 stopover airports
London Heathrow (LHR)
Cheapest • Avg £621 (return)
Newark (EWR)
Shortest trip • 14h 27m (one-way)
Insights
Insights
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We hope you enjoy your trip to San Francisco!
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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 return flight deals from Shannon to San Francisco

Fri, 18 Dec - Mon, 28 Dec
British Airways Logo
07:50 - 00:37SNN  Shannon-SFO San Francisco
24h 47m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
13:20 - 16:45SFO  San Francisco-SNN Shannon
19h 25m2 stops Los Angeles London Heathrow
£675British Airways
Fri, 18 Dec - Thu, 31 Dec
British Airways Logo
07:50 - 00:37SNN  Shannon-SFO San Francisco
24h 47m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
20:35 - 19:25SFO  San Francisco-SNN Shannon
14h 50m1 stop London Heathrow
£677British Airways
Mon, 21 Dec - Wed, 30 Dec
British Airways Logo
20:05 - 14:55SNN  Shannon-SFO San Francisco
26h 50m1 stop London Heathrow
British Airways Logo
17:25 - 16:45SFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
£687British Airways
Tue, 22 Dec - Fri, 1 Jan
British Airways Logo
07:50 - 14:55SNN  Shannon-SFO San Francisco
15h 05m1 stop London Heathrow
British Airways Logo
20:35 - 11:30SFO  San Francisco-SNN Shannon
30h 55m1 stop London Heathrow
£688British Airways
Thu, 26 Nov - Sun, 29 Nov
British Airways Logo
07:50 - 18:21SNN  Shannon-SFO San Francisco
18h 31m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
20:35 - 11:30SFO  San Francisco-SNN Shannon
30h 55m1 stop London Heathrow
£691British Airways
Fri, 18 Dec - Sat, 2 Jan
British Airways Logo
07:50 - 00:37SNN  Shannon-SFO San Francisco
24h 47m2 stops London Heathrow Dallas/Fort Worth
British Airways Logo
07:59 - 11:30SFO  San Francisco-SNN Shannon
19h 31m2 stops Dallas/Fort Worth London Heathrow
£692British Airways
Thu, 3 Dec - Tue, 8 Dec
British Airways Logo
20:05 - 20:10SNN  Shannon-SFO San Francisco
32h 05m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
15:07 - 16:45SFO  San Francisco-SNN Shannon
17h 38m2 stops Los Angeles London Heathrow
£699British Airways
Mon, 21 Dec - Sat, 2 Jan
British Airways Logo
17:30 - 14:55SNN  Shannon-SFO San Francisco
29h 25m1 stop London Heathrow
British Airways Logo
07:59 - 11:30SFO  San Francisco-SNN Shannon
19h 31m2 stops Dallas/Fort Worth London Heathrow
£702British Airways
Thu, 26 Nov - Sun, 29 Nov
British Airways Logo
07:50 - 18:21SNN  Shannon-SFO San Francisco
18h 31m2 stops London Heathrow Chicago O'Hare Intl
British Airways Logo
20:35 - 11:30SFO  San Francisco-SNN Shannon
30h 55m1 stop London Heathrow
£716British Airways
Sun, 20 Dec - Mon, 28 Dec
British Airways Logo
20:05 - 14:55SNN  Shannon-SFO San Francisco
26h 50m1 stop London Heathrow
British Airways Logo
17:25 - 16:45SFO  San Francisco-SNN Shannon
15h 20m1 stop London Heathrow
£718British Airways
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 return flight from Shannon to San Francisco?

Return flights from Shannon to San Francisco typically range from £561 to £731. The lowest price found in the past 5 days was £675 on British Airways.

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Key details for Shannon to San Francisco flights

Cheapest flight

£675
The most popular month to fly with an average 38% increase in traveller numbers.
Round-trip 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 return price

Your Shannon to San Francisco flight questions, answered

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

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

    A direct 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?

    Return flights from Shannon to San Francisco range from £561 to £731, with an average of £674 over the past 12 months. Anything below £561 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, return flight prices on this route showed a wide range, from about £675 to £1,596. That means the highest observed fare was about 2x higher than the lowest one.

  • Which car hire options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car hire companies, with daily rates starting from around £11 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 £593 return on average, while Monday is the most expensive at £829, a difference of £236.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Newark (EWR) gives the shortest average 1-stop total travel time of 14h 27m, compared to 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 Union Square, Fisherman's Wharf, 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 £593, about £236 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 £531 return in that month – typically £270 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

Complete your trip to San Francisco with a hotel stay or car hire

Car hire in San Francisco
Hotels in San Francisco
Holidays in San Francisco