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).

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 • Premium Economy Class

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

One-stop flights from Shannon to San Francisco most commonly connect through: • London Heathrow (LHR) - 53% of one-stop connections • New York John F Kennedy Intl (JFK) - 25% of one-stop connections • Newark (EWR) - 10% of one-stop connections • Chicago O'Hare Intl (ORD) - 10% of one-stop connections London Heathrow (LHR) handles the largest share of one-stop connections on this route.

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

Yes. Being flexible with your travel dates can save you up to 41% on the Shannon to San Francisco route. Wednesday is the cheapest departure day at $703 round-trip on average, while Monday is the most expensive at $1,181, a difference of $478. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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.

How long is a flight from Shannon to San Francisco?

A nonstop flight from Shannon to San Francisco takes 0h 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.

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 $720 to $6,033. 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 $580, which is 36% below the typical average for this route.

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 17m, compared with 15h 07m via Chicago O'Hare Intl (ORD) and 15h 39m via Boston Logan Intl (BOS).

What is the time difference between Shannon and San Francisco?

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

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

San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include: • Thrifty • Europcar • Dollar • Hertz • Fox

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

Round-trip flights from Shannon to San Francisco range from $711 to $971, with an average of $791 over the past 12 months. Anything below $711 counts as a good deal.

What is the most popular layover airport when flying from Shannon to San Francisco?

London Heathrow (LHR) is the most popular layover for the Shannon to San Francisco route. 53% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via LHR.

What is the cheapest layover airport when flying from Shannon to San Francisco?

Flights via London Heathrow (LHR) offer the most affordable fares, with an average round-trip price of $768. Based on KAYAK data over the past 3 months.

When flying from Shannon to San Francisco which airport offers the shortest layover?

Newark (EWR) had the shortest average connection time for Shannon to San Francisco layovers at 461 minutes over the past 3 months.

$547 CHEAP FLIGHTS from Shannon to San Francisco (SNN - SFO)

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Cheapest round-trip

$720

Typical prices: $711-$971

Multiple Airlines

Sun 10/28Sun 11/4

SNN - SFO • 1 stop

Cheapest one-way

$547

Typical prices: $609-$1,020

British Airways

Tue 10/9

SNN - SFO • 1 stop

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

When to travel

October

Cheapest • 11% price drop

September

Most popular

Good to know

Top layover airports

London Heathrow (LHR)

Cheapest • Avg $768 (round-trip)

Newark (EWR)

Shortest trip • 14h 17m (one-way)

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.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Shannon to San Francisco

Wed, Oct 28 - Wed, Nov 4

7:50 am - 5:55 pmSNN Shannon-SFO San Francisco

17h 05m1 stop London Heathrow

4:40 pm - 4:45 pmSFO San Francisco-SNN Shannon

16h 05m1 stop London Heathrow

$720Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

7:50 am - 5:55 pmSNN Shannon-SFO San Francisco

17h 05m1 stop London Heathrow

4:25 pm - 7:25 pmSFO San Francisco-SNN Shannon

19h 00m2 stops Los Angeles London Heathrow

$724Multiple Airlines

Thu, Oct 15 - Thu, Oct 22

12:30 pm - 7:14 pmSNN Shannon-SFO San Francisco

14h 44m1 stop Newark

8:20 am - 10:15 amSFO San Francisco-SNN Shannon

17h 55m1 stop Newark

$729United Airlines

Thu, Oct 15 - Thu, Oct 22

12:30 pm - 10:51 pmSNN Shannon-SFO San Francisco

18h 21m2 stops Newark Denver Intl

8:20 am - 10:15 amSFO San Francisco-SNN Shannon

17h 55m1 stop Newark

$729United Airlines

Thu, Oct 15 - Thu, Oct 22

12:30 pm - 9:47 pmSNN Shannon-SFO San Francisco

17h 17m2 stops Newark Los Angeles

7:05 am - 10:15 amSFO San Francisco-SNN Shannon

19h 10m2 stops Houston George Bush Intcntl Newark

$729United Airlines

Tue, Nov 17 - Tue, Nov 24

5:30 pm - 2:55 pmSNN Shannon-SFO San Francisco

29h 25m1 stop London Heathrow

5:25 pm - 7:25 pmSFO San Francisco-SNN Shannon

18h 00m1 stop London Heathrow

$756Multiple Airlines

Mon, Oct 5 - Mon, Oct 12

12:30 pm - 6:41 amSNN Shannon-SFO San Francisco

26h 11m2 stops Newark Denver Intl

10:35 am - 10:15 amSFO San Francisco-SNN Shannon

15h 40m2 stops San Diego Newark

$791United Airlines

Tue, Nov 17 - Tue, Nov 24

7:50 am - 11:01 pmSNN Shannon-SFO San Francisco

23h 11m2 stops London Heathrow Vancouver Intl

2:45 pm - 4:45 pmSFO San Francisco-SNN Shannon

18h 00m2 stops Vancouver Intl London Heathrow

$801Air Canada

Sat, Nov 7 - Sat, Nov 14

7:50 am - 10:57 pmSNN Shannon-SFO San Francisco

23h 07m2 stops London Heathrow Vancouver Intl

2:45 pm - 4:45 pmSFO San Francisco-SNN Shannon

18h 00m2 stops Vancouver Intl London Heathrow

$805Multiple Airlines

Sat, Oct 31 - Sat, Nov 7

7:50 am - 3:55 pmSNN Shannon-SFO San Francisco

15h 05m1 stop London Heathrow

5:25 pm - 4:45 pmSFO San Francisco-SNN Shannon

15h 20m1 stop London Heathrow

$811British 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 from Shannon to San Francisco with more confidence.

Airlines

Layovers

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

United Airlines ($728) and Air Canada ($801) are the cheapest airlines to fly round-trip from Shannon to San Francisco according to KAYAK data over the last 5 days.

Find deals

Low season	December
High season	September
Cheapest flight	$547

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

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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).
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
• Premium Economy Class
Which airports do connecting flights from Shannon to San Francisco pass through?
One-stop flights from Shannon to San Francisco most commonly connect through:

• London Heathrow (LHR) - 53% of one-stop connections
• New York John F Kennedy Intl (JFK) - 25% of one-stop connections
• Newark (EWR) - 10% of one-stop connections
• Chicago O'Hare Intl (ORD) - 10% of one-stop connections

London Heathrow (LHR) handles the largest share of one-stop connections on this route.
Can I save money by using flexible dates for flights from Shannon to San Francisco?
Yes. Being flexible with your travel dates can save you up to 41% on the Shannon to San Francisco route. Wednesday is the cheapest departure day at $703 round-trip on average, while Monday is the most expensive at $1,181, a difference of $478. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
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.
How long is a flight from Shannon to San Francisco?
A nonstop flight from Shannon to San Francisco takes 0h 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.
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 $720 to $6,033. 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 $580, which is 36% below the typical average for this route.
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 17m, compared with 15h 07m via Chicago O'Hare Intl (ORD) and 15h 39m via Boston Logan Intl (BOS).
What is the time difference between Shannon and San Francisco?
San Francisco is 8 hours behind Shannon (Pacific Time vs Irish Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at San Francisco Airport (SFO)?
San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:
• Thrifty
• Europcar
• Dollar
• Hertz
• Fox
How much should I expect to pay for a Shannon to San Francisco flight?
Round-trip flights from Shannon to San Francisco range from $711 to $971, with an average of $791 over the past 12 months. Anything below $711 counts as a good deal.

If your dates can be flexible, aim for a Wednesday departure instead of Monday. On this route, Wednesday flights average $703 - about $478 less than Monday (40% savings) based on the last 12 months.
If you can choose when to travel, plan your Shannon to San Francisco trip for October. Fares historically average $703 round-trip in that month - typically $333 less than the most expensive month, which is February (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

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Everything you should know

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

Recent round-trip flight deals from Shannon to San Francisco

Recent one-way flight deals from Shannon to San Francisco

Recent last minute flight deals from Shannon to San Francisco

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

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

What is the most popular layover airport when flying from Shannon to San Francisco?

What is the cheapest layover airport when flying from Shannon to San Francisco?

When flying from Shannon to San Francisco which airport offers the shortest layover?

Key details for Shannon to San Francisco flights

Low season

High season

Cheapest flight

When to book flights from Shannon to San Francisco

Your Shannon to San Francisco flight questions, answered

Your guide to booking Shannon to San Francisco flights

More options for your flight from Shannon to San Francisco

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

Information on your arrival and departure airports

Cabin class types available on flights from Shannon to San Francisco

Find direct flights to and from Shannon and San Francisco

Flights from domestic origins to San Francisco

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