San Francisco to Seattle
SFOSEA
Fly from San Francisco to Seattle starting at USD 74 with Frontier Airlines.
Best fare available on Oct 9, 2026.
Limited seats. Better plans. Book before it's gone.
San Francisco to Seattle cheapest flights this week
San Francisco to Seattle monthly flight fare trend
Sep
from USD 158
Oct
from USD 74
Nov
from USD 49
Dec
from USD 79
Jan
No flights
Feb
from USD 103
Airport Details
Origin
San Francisco
San Francisco International Airport (SFO)
San Francisco, SFO
Zone
Los Angeles
Elev
13 ft
Destination
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
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