SNN - SFO

€526 Find Cheap Flights from Shannon to San Francisco

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Shannon to San Francisco departing on 11/3. 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, 0 bags

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
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Everything you should know

Cheapest return fare
€574
Multiple Airlines
Wed 11/3Sun 15/3
SNN - SFO • 1 stop
Cheapest one-way flight
€687
British Airways
Tue 26/5
SNN - SFO • 1 stop
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Booking Insights
Flight 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

Wed, 11 Mar - Sun, 15 Mar
Multiple Airlines Logo
07:50 - 19:45
SNN
-
SFO
18h 55m
1 stop
Multiple Airlines Logo
16:59 - 19:25
SFO
-
SNN
19h 26m
2 stops
€574Multiple Airlines
Fri, 15 May - Tue, 26 May
British Airways Logo
16:55 - 13:50
SNN
-
SFO
28h 55m
1 stop
British Airways Logo
16:35 - 20:35
SFO
-
SNN
20h 00m
1 stop
€578British Airways
Tue, 3 Mar - Tue, 10 Mar
British Airways Logo
07:50 - 22:07
SNN
-
SFO
22h 17m
2 stops
British Airways Logo
17:20 - 16:45
SFO
-
SNN
16h 25m
2 stops
€582British Airways
Wed, 11 Mar - Sun, 15 Mar
Multiple Airlines Logo
07:50 - 16:00
SNN
-
SFO
15h 10m
1 stop
Multiple Airlines Logo
21:40 - 19:25
SFO
-
SNN
14h 45m
1 stop
€603Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
American Airlines Logo
14:00 - 00:52
SNN
-
SFO
18h 52m
1 stop
American Airlines Logo
06:21 - 06:20
SFO
-
SNN
16h 59m
2 stops
€606American Airlines
Fri, 15 May - Tue, 26 May
British Airways Logo
21:15 - 13:50
SNN
-
SFO
24h 35m
1 stop
British Airways Logo
13:35 - 16:10
SFO
-
SNN
18h 35m
2 stops
€616British Airways
Fri, 15 May - Tue, 26 May
British Airways Logo
21:15 - 13:50
SNN
-
SFO
24h 35m
1 stop
British Airways Logo
10:12 - 16:10
SFO
-
SNN
21h 58m
2 stops
€617British Airways
Thu, 23 Apr - Mon, 27 Apr
British Airways Logo
07:40 - 23:09
SNN
-
SFO
23h 29m
2 stops
British Airways Logo
13:40 - 16:10
SFO
-
SNN
18h 30m
2 stops
€621British Airways
Fri, 15 May - Tue, 26 May
British Airways Logo
07:40 - 22:04
SNN
-
SFO
22h 24m
2 stops
British Airways Logo
19:30 - 20:35
SFO
-
SNN
17h 05m
1 stop
€622British Airways
Thu, 23 Apr - Mon, 27 Apr
American Airlines Logo
14:30 - 23:59
SNN
-
SFO
17h 29m
1 stop
American Airlines Logo
07:00 - 06:00
SFO
-
SNN
15h 00m
1 stop
€633American Airlines
Booking Insights

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 most popular stopover airport when flying from Shannon to San Francisco?

Percentage of one-stop return flights from Shannon to San Francisco chosen by KAYAK users via each stopover airport in the last 12 months (only includes trips with the same stopover airport on both legs).

London (LHR) is the top choice – 38% of KAYAK users who clicked on one-stop flights from Shannon to San Francisco picked an itinerary connecting there.

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

Average return price for one-stop flights from Shannon to San Francisco clicked by KAYAK users in the last 12 months (only includes trips with the same stopover airport for both legs).

Flights via Chicago (ORD) offer the most affordable fares, with an average price of €774 for a return.

Which stopover airport offers the shortest total travel time from Shannon to San Francisco?

Shortest average total travel time for one-stop one-way flights from Shannon to San Francisco via different stopover airports, based on KAYAK user data from the last 12 months.

Consider flying via Chicago (ORD) for the shortest journey. The average one-way travel time for flights connecting there is 13h 54m.

Which stopover airport has the quickest connection when flying from Shannon to San Francisco?

Average duration at different stopover airports for one-stop one-way flights from Shannon to San Francisco, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Chicago (ORD) often has the shortest stopovers from Shannon to San Francisco, with an average time of 1h 58m.

Good to know

Cheapest flight€574
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 €687 for a one-way ticket and €526 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?

    Star Alliance is the only airline alliance operating flights between Shannon and San Francisco.

  • 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.
7.4
United AirlinesOverall score based on 9177 reviews
7.1Entertainment
6.6Food
7.3Comfort
8.1Crew
7.7Boarding
Airline reviews

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

6.0 GoodMichael, Jan 2026
PDX - SFO
Read more United Airlines reviews

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Both flights delayed. 2nd flight over 3 hours late mechanical issues

It was good but only meal served is very less. Meantime good to add rice and chicken in one of meal

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

On the way my flight entertainment wouldn’t work the screen went black and no matter how many times I tried to turn it on it wouldn’t. Food was surprisingly good but the tray tables were tiny so you couldn’t get anything else on the table. The seats hardly go back and are not overly comfortable. Wouldn’t fly United again.

Flight was late - I was downgraded from first class to coach

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

7 hours delayed due to operational issues on United’s end. Basically laziness.

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

Information on your arrival and departure airports