Find cheap flights from San Francisco to Shannon from €455
This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Shannon departing on 27/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
Return
1 adult
Economy
0 bags
Sun 26/5
Sun 2/6
Search hundreds of travel sites at once for deals on flights to Shannon
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Shannon, as well as popular online travel agencies
...and more
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Shannon, as well as popular online travel agencies
In the last 7 days, travellers have searched 44,335,567 times on KAYAK, and here's why:
Filter your dealsChoose cabin class, free Wi-Fi and more.
Cheap flight deals from San Francisco to Shannon (SFO-SNN)
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Flights from San Francisco to Shannon - Travel Insights & Trends
Get data-powered insights and trends into flights from San Francisco to Shannon to help you find the cheapest flights, the best time to fly and much more.
What is the cheapest month to fly from San Francisco to Shannon?
To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Francisco to Shannon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from San Francisco to Shannon is January, where tickets cost €720 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is €1,328 and €1,281 respectively.
How far in advance should I book a flight from San Francisco to Shannon?
To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Francisco to Shannon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from San Francisco to Shannon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 days before departure.
Which airlines provide the cheapest flights from San Francisco to Shannon?
The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on United Airlines (€597) and American Airlines (€688). The cheapest round-trip tickets were found on United Airlines (€644) and KLM (€653).
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (30% more expensive on average)
Flight 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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.
FAQs for booking flights from San Francisco to Shannon
What is the cheapest flight from San Francisco to Shannon?
In the last 3 days, the lowest price for a flight from San Francisco to Shannon was €488 for a one-way ticket and €690 for a return.
Which aircraft models fly most regularly from San Francisco to Shannon?
We unfortunately don’t have that data for this specific route.
Which airline alliances offer flights from San Francisco to Shannon?
Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between San Francisco and Shannon, with Star Alliance being the most commonly used for this route.
How does KAYAK find such low prices on flights from San Francisco to Shannon?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Shannon.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Shannon?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from San Francisco to Shannon?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Shannon with an airline and back to San Francisco with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Shannon?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.
See more FAQs
Book cheap flights from San Francisco to Shannon
Recent one-way flight deals
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Shannon found on KAYAK in the last 72 hours.
27/9Fri
3 stops
31h 12mSFO-SNN
€455
17/7Wed
3 stops
29h 05mSFO-SNN
€483
15/7Mon
3 stops
31h 12mSFO-SNN
€515
10/7Wed
3 stops
35h 37mSFO-SNN
€537
16/7Tue
2 stops
20h 45mSFO-SNN
€543
11/7Thu
3 stops
28h 03mSFO-SNN
€560
14/7Sun
1 stopUnited Airlines
17h 00mSFO-SNN
€597
28/9Sat
2 stopsUnited Airlines
27h 45mSFO-SNN
€603
28/9Sat
1 stopAmerican Airlines
16h 35mSFO-SNN
€688
10/7Wed
2 stopsDelta
26h 04mSFO-SNN
€746
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Last minute flights from San Francisco to Shannon
Last minute flight, train and bus deals
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from San Francisco to Shannon that are departing in the next 10 days.