United Cheap Flights from San Francisco to Shannon

View €369 flight on Sun, 9 Aug 2026Opens in a new window
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Prices were available within the past 7 days and start at €369 for one-way flights and €754 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 4 Jan - Sun, 11 Jan
SFO
San Francisco
SNN
Shannon
€754 Return, found 2 days ago
€754
Return
found 2 days ago
Select United flight, departing Sun, 4 Jan from San Francisco to Shannon, returning Sun, 11 Jan, priced at €754 found 2 days ago
United
Sun, 4 Jan - Sun, 11 Jan
SFO
San Francisco
SNN
Shannon
€759 Return, found 2 days ago
€759
Return
found 2 days ago
Select United flight, departing Sun, 4 Jan from San Francisco to Shannon, returning Sun, 11 Jan, priced at €759 found 2 days ago
United
Sun, 4 Jan - Sun, 11 Jan
SFO
San Francisco
SNN
Shannon
€800 Return, found 2 days ago
€800
Return
found 2 days ago
Select United flight, departing Sun, 4 Jan from San Francisco to Shannon, returning Sun, 11 Jan, priced at €800 found 2 days ago
United
Wed, 24 Dec - Wed, 31 Dec
SFO
San Francisco
SNN
Shannon
€1,439 Return, found 6 hours ago
€1,439
Return
found 6 hours ago
Select United flight, departing Wed, 24 Dec from San Francisco to Shannon, returning Wed, 31 Dec, priced at €1,439 found 6 hours ago
United
Wed, 24 Dec - Wed, 31 Dec
SFO
San Francisco
SNN
Shannon
€1,455 Return, found 6 hours ago
€1,455
Return
found 6 hours ago
Select United flight, departing Wed, 24 Dec from San Francisco to Shannon, returning Wed, 31 Dec, priced at €1,455 found 6 hours ago
United
Wed, 24 Dec - Wed, 31 Dec
SFO
San Francisco
SNN
Shannon
€1,489 Return, found 6 hours ago
€1,489
Return
found 6 hours ago
Select United flight, departing Wed, 24 Dec from San Francisco to Shannon, returning Wed, 31 Dec, priced at €1,489 found 6 hours ago
San Francisco to Shannon route information
Origin airport
San Francisco Intl.
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways, JetBlue Airways
Popular airline
British Airways
Distance
8056 km

Frequently asked questions

How much is a United Airlines flight from San Francisco Intl. Airport (SFO) to Shannon Airport (SNN)?
Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from €754 from SFO to SNN. Affordable one-way fares from €369 are available as well.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SFO to SNN with United Airlines?
United Airlines flights to Shannon are often more affordable in the quieter months of January and February. Whether you're after a return or one-way ticket, you could find a better deal then.
Does United Airlines fly nonstop from San Francisco Intl. Airport (SFO) to Shannon Airport (SNN)?
Click on the "Nonstop" filter when searching for direct United Airlines flights from SFO to SNN. You'll also be able to compare other carriers offering the same direct route.
What airports does United Airlines fly into in Shannon?
United Airlines flights from San Francisco Intl. Airport (SFO) to Shannon come in to Shannon Airport (SNN). This is the main gateway to this destination.
Can I change or cancel my United Airlines flight from San Francisco Intl. Airport (SFO) to Shannon Airport (SNN)?
It's generally possible to modify or cancel your flight, although there may be additional charges if your booking was made over 24 hours ago. Need flexible options? Make use of our "No cancel fee" and "Changes included" filters to find flights that won't penalize you if you need to adjust your plans. To update your itinerary, go to "Trips," select your flight and click on "Manage Booking" for more details.
*Available to Expedia members.