SNN - SFO

€295 Find Cheap Flights from Shannon to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Shannon to San Francisco departing on 3/9. 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.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Shannon to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Shannon to San Francisco, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Shannon to San Francisco 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 for you by selecting your travel dates on KAYAK.

Recent return flight deals from Shannon to San Francisco

Mon, 25 Aug - Mon, 1 Sep
American Airlines Logo
21:15 - 17:52SNN-SFO
28h 37m2 stops
American Airlines Logo
09:12 - 11:20SFO-SNN
18h 08m2 stops
€627American Airlines
Find Deal
Mon, 25 Aug - Mon, 1 Sep
British Airways Logo
21:15 - 18:39SNN-SFO
29h 24m2 stops
British Airways Logo
10:16 - 11:20SFO-SNN
17h 04m2 stops
€629British Airways
Find Deal
Mon, 25 Aug - Mon, 1 Sep
United Airlines Logo
09:30 - 15:30SNN-SFO
14h 00m1 stop
United Airlines Logo
13:05 - 10:15SFO-SNN
13h 10m1 stop
€632United Airlines
Find Deal
Tue, 11 Nov - Thu, 20 Nov
American Airlines Logo
07:50 - 18:41SNN-SFO
18h 51m2 stops
American Airlines Logo
16:05 - 16:45SFO-SNN
16h 40m2 stops
€635American Airlines
Find Deal
Tue, 11 Nov - Thu, 20 Nov
American Airlines Logo
07:50 - 18:41SNN-SFO
18h 51m2 stops
American Airlines Logo
16:05 - 16:45SFO-SNN
16h 40m2 stops
€636American Airlines
Find Deal
Mon, 21 Jul - Tue, 29 Jul
Lufthansa Logo
12:30 - 21:42SNN-SFO
17h 12m1 stop
Lufthansa Logo
07:00 - 10:15SFO-SNN
19h 15m1 stop
€726Lufthansa
Find Deal
Thu, 24 Jul - Mon, 11 Aug
Lufthansa Logo
12:30 - 21:42SNN-SFO
17h 12m1 stop
Lufthansa Logo
07:00 - 10:15SFO-SNN
19h 15m1 stop
€727Lufthansa
Find Deal
Mon, 21 Jul - Tue, 29 Jul
United Airlines Logo
09:30 - 15:33SNN-SFO
14h 03m1 stop
United Airlines Logo
05:00 - 07:30SFO-SNN
18h 30m2 stops
€732United Airlines
Find Deal
Tue, 11 Nov - Thu, 20 Nov
British Airways Logo
07:50 - 18:45SNN-SFO
18h 55m1 stop
British Airways Logo
17:30 - 16:45SFO-SNN
15h 15m1 stop
€769British Airways
Find Deal
Mon, 25 Aug - Mon, 1 Sep
KLM Logo
13:05 - 19:10SNN-SFO
38h 05m1 stop
KLM Logo
06:15 - 11:10SFO-SNN
20h 55m2 stops
€790KLM
Find Deal
Useful Info

KAYAK's insights & trends for Shannon to San Francisco flights

Get data-powered insights and trends into flights from Shannon to San Francisco to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Shannon to San Francisco, 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 Shannon to San Francisco is March, where tickets cost €522 (return) on average. On the other hand, the most expensive months are August and June, where the average cost of round-trip tickets is €723 and €708 respectively.


Good to know

Low seasonMarch
High seasonAugust
Cheapest flight€295
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly (14% more expensive on average)
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
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 Shannon to San Francisco

  • What is the cheapest flight from Shannon to San Francisco?

    In the last 3 days, the lowest price for a flight from Shannon to San Francisco was €346 for a one-way ticket and €735 for a return.

  • Which aircraft models fly most regularly from Shannon to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Shannon to San Francisco?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Shannon and San Francisco, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Shannon to San Francisco?

    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 Shannon to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Shannon to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Shannon 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 Shannon to San Francisco?

    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 San Francisco with an airline and back to Shannon with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Shannon to San Francisco?

    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 San Francisco from Shannon up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Shannon to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Shannon to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Shannon to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.6
British AirwaysOverall score based on 7109 reviews
7.6Crew
6.3Food
6.9Boarding
6.7Comfort
6.4Entertainment
Airline reviews

3/4 bags delayed and 1/4 damaged at the other end. Flight was freezing

8.0 ExcellentDavid, Jul 2025LHR - JFK
Read more British Airways reviews

3/4 bags delayed and 1/4 damaged at the other end. Flight was freezing

The crew were good. The flight was on time. The entertainment choice was ok. But the food was bad, tasted and texture were awful.

After boarding we were waiting in the plane for more than one hour to take off without AC with very high temperature inside

The flight was an hour late leaving Heathrow. The food was mediocre. When we got to Austin, my husband’s luggage was missing. He filled out information at baggage claim. We are waiting to hear something. His name is Henry Jacob Braunig.

The food was very good and it came multiple times

Flight from LGW to JFK delayed by 4 hrs No explanation given until the pilot said the delay due to planned maintenance on the aircraft

We arrived late to London, and consequently were 5 min. late to be allowed through security for our next flight. Even though dozens of people missed the same flight, BA did not radio ahead to hold open security for an extra 5-10 min. to allow people to get on the flight. This caused an additional 6 hour delay in London after waiting over an hour in Customer Service to get rebooked. They did not have enough staff on hand to help people in a timely manner. Not at all happy with the BA's customer care or customer service.

All service prior to the flight was terrible: online check-in not working, no customer service tel,, multiple airport scanners not working, A huge mess.

CONSTANT ERROR MESSAGE THAT THE WIFI COULD NOT BE PURCHASED DUE TO INABILITY TO CONNECT PAYMENT SYSTEM VIA SATELLITE. THIS HAPPENED IN BOTH DIRECTIONS. THE MAIN REASON I TRAVEL IN PRIORITY IS TO BE ABLE TO WORK FOR WHICH I NEED ACCESS TO INTERNET. .

They lost my luggage. Lady who was helping with it in Austin was rude. Not very helpful!

Everything you need to know for your flight from Shannon to San Francisco

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.