Cheap Flights from Seattle to San Diego

View €84 flight on Tue, 23 Sep 2025Opens in a new window

Popular airlines from Seattle to San Diego

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Cheap flights from Seattle to San Diego (SEA-SAN)

Prices were available within the past 7 days and start at €84 for one-way flights and €135 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 27 Sep - Wed, 1 Oct
SEA
Seattle
SAN
San Diego
€135 Return, found 1 day ago
€135
Return
found 1 day ago
Select Delta flight, departing Sat, 27 Sep from Seattle to San Diego, returning Wed, 1 Oct, priced at €135 found 1 day ago
Delta
Sat, 27 Sep - Thu, 2 Oct
SEA
Seattle
SAN
San Diego
€153 Return, found 1 day ago
€153
Return
found 1 day ago
Select Delta flight, departing Sat, 27 Sep from Seattle to San Diego, returning Thu, 2 Oct, priced at €153 found 1 day ago
American Airlines
Sat, 27 Sep - Thu, 2 Oct
SEA
Seattle
CLD
Carlsbad
€169 Return, found 1 day ago
€169
Return
found 1 day ago
Select American Airlines flight, departing Sat, 27 Sep from Seattle to Carlsbad, returning Thu, 2 Oct, priced at €169 found 1 day ago
United
Sat, 27 Sep - Wed, 1 Oct
SEA
Seattle
SAN
San Diego
€205 Return, found 1 day ago
€205
Return
found 1 day ago
Select United flight, departing Sat, 27 Sep from Seattle to San Diego, returning Wed, 1 Oct, priced at €205 found 1 day ago
Alaska Airlines
Sat, 6 Sep - Sun, 7 Sep
PAE
Seattle
SAN
San Diego
€253 Return, found 5 days ago
€253
Return
found 5 days ago
Select Alaska Airlines flight, departing Sat, 6 Sep from Seattle to San Diego, returning Sun, 7 Sep, priced at €253 found 5 days ago
JetBlue Airways
Fri, 29 Aug - Tue, 2 Sep
SEA
Seattle
SAN
San Diego
€517 Return, found 3 days ago
€517
Return
found 3 days ago
Select JetBlue Airways flight, departing Fri, 29 Aug from Seattle to San Diego, returning Tue, 2 Sep, priced at €517 found 3 days ago

Find the cheapest month to fly from Seattle (SEA) to San Diego (SAN)

November is typically the cheapest month to fly

From €70 - €216 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.