United Cheap Flights from San Francisco to Shannon

View €369 flight on Wed, 5 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 €616 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 6 Nov - Wed, 19 Nov
SFO
San Francisco
SNN
Shannon
€616 Return, found 1 day ago
€616
Return
found 1 day ago
Select United flight, departing Thu, 6 Nov from San Francisco to Shannon, returning Wed, 19 Nov, priced at €616 found 1 day ago
United
Thu, 16 Oct - Wed, 22 Oct
SFO
San Francisco
SNN
Shannon
€619 Return, found 4 days ago
€619
Return
found 4 days ago
Select United flight, departing Thu, 16 Oct from San Francisco to Shannon, returning Wed, 22 Oct, priced at €619 found 4 days ago
United
Thu, 16 Oct - Wed, 22 Oct
SFO
San Francisco
SNN
Shannon
€661 Return, found 4 days ago
€661
Return
found 4 days ago
Select United flight, departing Thu, 16 Oct from San Francisco to Shannon, returning Wed, 22 Oct, priced at €661 found 4 days ago

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 €616 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.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways
Popular airline
American Airlines
Distance
8056 km

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