Cheap Flights from Seattle to Half Moon Bay

View €49 flight on Thu, 21 Aug 2025Opens in a new window

Popular airlines from Seattle to Half Moon Bay

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Cheap flights from Seattle to Half Moon Bay (SEA-SJC)

Prices were available within the past 7 days and start at €49 for one-way flights and €96 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 21 Aug - Mon, 25 Aug
SEA
Seattle
SJC
San Jose
€96 Return, found 4 days ago
€96
Return
found 4 days ago
Select Delta flight, departing Thu, 21 Aug from Seattle to San Jose, returning Mon, 25 Aug, priced at €96 found 4 days ago
Delta
Thu, 21 Aug - Mon, 25 Aug
SEA
Seattle
SJC
San Jose
€105 Return, found 4 days ago
€105
Return
found 4 days ago
Select Delta flight, departing Thu, 21 Aug from Seattle to San Jose, returning Mon, 25 Aug, priced at €105 found 4 days ago
American Airlines
Wed, 13 Aug - Fri, 15 Aug
SEA
Seattle
SFO
San Francisco
€127 Return, found 10 hours ago
€127
Return
found 10 hours ago
Select American Airlines flight, departing Wed, 13 Aug from Seattle to San Francisco, returning Fri, 15 Aug, priced at €127 found 10 hours ago
United
Thu, 7 Aug - Mon, 11 Aug
SEA
Seattle
SFO
San Francisco
€164 Return, found 3 days ago
€164
Return
found 3 days ago
Select United flight, departing Thu, 7 Aug from Seattle to San Francisco, returning Mon, 11 Aug, priced at €164 found 3 days ago
Alaska Airlines
Thu, 14 Aug - Sun, 17 Aug
PAE
Seattle
SJC
San Jose
€567 Return, found 2 hours ago
€567
Return
found 2 hours ago
Select Alaska Airlines flight, departing Thu, 14 Aug from Seattle to San Jose, returning Sun, 17 Aug, priced at €567 found 2 hours ago
Hawaiian Airlines
Thu, 14 Aug - Sun, 17 Aug
SEA
Seattle
SJC
San Jose
€1,354 Return, found 2 hours ago
€1,354
Return
found 2 hours ago
Select Hawaiian Airlines flight, departing Thu, 14 Aug from Seattle to San Jose, returning Sun, 17 Aug, priced at €1,354 found 2 hours ago

Find the cheapest month to fly from Seattle (SEA) to San Francisco (SFO)

January is typically the cheapest month to fly

From €82 - €176 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.