Cheap flights from San Francisco (SFO) to Shannon (SNN) from $310

This is the cheapest one-way flight price, found on 12/7. Prices may vary by date and flight preferences.
SFO — SNN
Dec 12 — Dec 191

The best prices from San Francisco to Shannon are usually found in January or November, booked 13 days in advance, depart on a Thursday or Saturday and return on a Monday

How to find the cheapest flight from San Francisco (SFO) to Shannon (SNN)

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 7, 2023.

Popular in

June

Cheapest in

January

Round-trip from

$532

One-way from

$515
High demand for flights, 23% potential price rise
Best time to find cheap flights, 29% potential price drop
From San Francisco to Shannon
One-way flight from San Francisco to Shannon

What is the cheapest day to fly round-trip from San Francisco to Shannon?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 15% on your flight compared to booking on days when demand is much higher.

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

To save up to 69% on this flight, we recommend booking at least 14 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from San Francisco to Shannon from $771 1-2 weeks out and tickets from $1,308 for flights departing within the next 72 hours.

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

Flights from San Francisco to Shannon lean towards being more expensive in June. Prices are generally better when you fly from San Francisco to Shannon in January, with the cheapest ticket starting at $771.

When is the cheapest time to fly from San Francisco to Shannon (SFO - SNN)?

It’s optimal to fly from San Francisco to Shannon in the afternoon. By choosing this option you can save up to 7% on the cost of your flight, compared to a flight in the morning.

Cheap Aer Lingus flights from San Francisco to Shannon

Explore cheap flight options specifically provided by Aer Lingus for the route between San Francisco and Shannon. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Check out some of the cheapest Aer Lingus flights we've come across from San Francisco to Shannon. Come back soon if you're not finding the exact deal you're looking for.

Cheap Air Canada flights from San Francisco to Shannon

Explore cheap flight options specifically provided by Air Canada for the route between San Francisco and Shannon. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Browse through some of the cheapest Air Canada flights traveling from San Francisco to Shannon. Deals frequently update to provide users with more options.

Cheap San Francisco to Shannon flights in December & January 2023

Find cheap flight options from San Francisco to Shannon specifically for the months of December and January 2023. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Prices were last updated on December 7, 2023.
These are some of the best deals we've found on flights to Shannon in 2023 at this time. For more flight deals, be sure to check back very soon.

San Francisco to Shannon 2023 flight deals

Discover exclusive flight deals for travel between San Francisco and Shannon in 2023. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
These are some of the best deals we've found on flights to Shannon in 2023 at this time. For more flight deals, be sure to check back very soon.

San Francisco to Shannon flights leaving soon

Find last-minute flight options from San Francisco to Shannon for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Have a look at some of the last-minute flights available departing from San Francisco to Shannon. Tip: verify your flight details before completing your reservation.

One-way flights to Shannon from San Francisco

Search for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
Some of the best available deals we've found on one-way flights from San Francisco to Shannon. For those needing a return trip from San Francisco, there is a search form available above.

Find flights from San Francisco to Shannon within your budget

Customize your flight search to find flights from San Francisco to Shannon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.

Fly from

Any airport

Fly to

Any airport

Budget

$764 - $1,464

Route

Depart

Return

Price

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 3/13

2 stops20h 00m

Shannon

Wed 3/20

2 stops22h 45m

$764

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 3/13

1 stop15h 40m

Shannon

Wed 3/20

1 stop13h 30m

$776

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Tue 3/12

2 stops21h 00m

Shannon

Tue 3/19

2 stops32h 42m

$791

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sun 4/28

2 stops21h 23m

Shannon

Sun 5/5

2 stops27h 20m

$799

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 1/13

2 stops36h 54m

Shannon

Sat 1/20

2 stops36h 24m

$819

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Mon 4/1

1 stop17h 10m

Shannon

Mon 4/8

1 stop24h 50m

$833

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Wed 4/10

1 stop17h 10m

Shannon

Sat 4/20

1 stop14h 35m

$847

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Sat 1/13

1 stop18h 55m

Shannon

Sat 1/20

2 stops24h 58m

$874

San FranciscoShannon

SFO - SNN

SFOSNN

San Francisco

Fri 1/12

2 stops32h 21m

Shannon

Sat 1/20

1 stop14h 30m

$1,464

Flights are sorted by cheapest first

Deals found on 12/6

Average price of flights to Shannon by month

Plan your trip from San Francisco to Shannon by taking into account the cheapest months to travel. The average price of a one-way flight from San Francisco to Shannon is currently 417.78 USD while a round-trip flight costs 885.22 USD. Price data was last updated on December 3, 2023.

Currently, November is the cheapest month in which you can book a flight from San Francisco to Shannon (average of $532). Flying from San Francisco to Shannon in June is currently the most expensive (average of $1,141). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$611

February

$552

March

$620

April

$792

May

$879

June

$1,141

July

$1,090

August

$1,007

September

$821

October

$661

November

$532

December

$559

Reviews of airlines servicing Shannon

Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated December 7, 2023.
Read reviews from past customers who have flown Aer Lingus, Air Canada and United Airlines from San Francisco to Shannon. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

7.4
Good
1,902 reviews
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

7.2
Good
2,645 reviews
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

6.7
Okay
989 reviews
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

6.6
Okay
326 reviews
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

6.5
Okay
1,154 reviews
7.4
Good
1,902 reviews

Crew

8.1

Food

6.7

Boarding

7.7

Overall

7.4

Comfort

7.3

Entertainment

7.0

Reviews

1 / 10

One Hostess working in Business Class (Dolly maybe) was exceptional. Helped me figure out how to release. The video screen from its stowed position (sat just behind Business Class). Felt all around to find a release button, even had my hand on the release button. dolly came back to help. At first neither her or I could find the button to release the stowed screen. Later I came back from the restroom and there it was, up and ready to use. Maybe paint a red arrow for some us dum ex pilots. Felt a bit stupid but Dolly came to my rescue Ron

Average temperature in Shannon by month

Plan your trip to Shannon by selecting the month that matches your preferred temperature. July sees the highest average temperature while January sees the lowest average temperature. Temperature data was last updated on December 3, 2023.

SNN

Temperature

42.8 - 60.8 °F

Average rainfall in Shannon by month

Keep in mind the precipitation totals in Shannon when planning your trip. Shannon sees an average of 3.21 precipitation per year with the most occurring in October. Precipitation data was last updated on December 3, 2023.

SNN

Rainfall

2.3 - 4.1 inches

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find flights from San Francisco to Shannon for under $800 on Cheapflights?

Yes, there are multiple flights from San Francisco to Shannon for under $800. The cheapest flight booked recently is on Multiple Airlines for just $764, but on average you can expect to pay $953.

Are there last-minute flights available from San Francisco to Shannon for under $1,000?

There are currently 6+ open flights from San Francisco to Shannon within the next 7 days for less than $1,000.

What are the cheapest airlines flying from San Francisco to Shannon round-trip?

Our cheapest airline available from San Francisco to Shannon is Aer Lingus. Our recent data shows that you can find tickets from as low as $776 on this airline. Additional options worth looking into are Air Canada and United Airlines, starting at $791 and $799 round-trip. Aer Lingus is priced at 28% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from San Francisco to Shannon one-way?

One-way options have recently been found by users for as low as $515 on Aer Lingus. Other airlines that offer cheap prices include British Airways from $535 and United Airlines from $925 one-way.

What are the most popular airlines that fly from San Francisco to Shannon?

What does SFO to SNN mean?

This is defined as San Francisco Airport (SFO) and Shannon Airport (SNN). Codes like Shannon Airport are often used to just call airports uniquely.

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from San Francisco to Shannon

Discover the top 5 airlines that operate flights from San Francisco to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,618,515 searches. Data last updated December 7, 2023.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$594Average$1,095FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$723Average$800FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest$808Average$1,236FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest$816Average$1,279FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest$905Average$1,062FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

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How does Cheapflights help users find flights from San Francisco to Shannon?

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to Shannon?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Shannon from San Francisco.

Can Cheapflights find flights from San Francisco to Shannon with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Shannon, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from San Francisco to Shannon become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Shannon from San Francisco today and book when prices fit your budget.

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