Book United Shannon to San Francisco flight deals from $629

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Plan ahead for flights from Shannon to San Francisco

from
to
Type
Dates
Price*
Shannon (SNN)
to San Francisco (SFO)
Roundtrip
Depart Wed 31 Oct 2018
Return Mon 5 Nov 2018
from$ 629*Viewed: 7 hours ago
Shannon (SNN)
to San Francisco (SFO)
Roundtrip
Depart Tue 16 Oct 2018
Return Mon 5 Nov 2018
from$ 651*Viewed: 1 day ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.