San Francisco to Seattle

SFOSEA

Fly from San Francisco to Seattle starting at USD 70 with Frontier Airlines.Best fare available on Sep 14, 2026.Limited seats. Better plans. Book before it's gone.

San Francisco to Seattle cheapest flights this week

6 Sept
Frontier Airlines
06:00SFO
13:22SEA
1 StopUSD 117VIEW DEAL
6 Sept
Frontier Airlines
19:30SFO
09:19SEA
1 StopUSD 180VIEW DEAL
8 Sept
Frontier Airlines
12:57SFO
20:40SEA
1 StopUSD 98VIEW DEAL
8 Sept
Alaska Airlines
06:00SFO
08:08SEA
DirectUSD 129VIEW DEAL
10 Sept
Frontier Airlines
12:07SFO
18:36SEA
1 StopUSD 147VIEW DEAL
13 Sept
Frontier Airlines
11:17SFO
09:42SEA
1 StopUSD 137VIEW DEAL
13 Sept
Alaska Airlines
09:03SFO
11:22SEA
DirectUSD 93VIEW DEAL
13 Sept
Alaska Airlines
07:00SFO
09:08SEA
DirectUSD 93VIEW DEAL
14 Sept
Frontier Airlines
06:30SFO
17:45SEA
1 StopUSD 70VIEW DEAL
15 Sept
Southwest Airlines
10:40SFO
17:30SEA
1 StopUSD 79VIEW DEAL

San Francisco to Seattle monthly flight fare trend

Sep
from USD 56
Oct
from USD 74
Nov
from USD 99
Dec
from USD 130
Jan
No flights
Feb
No flights

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

Flights from San Francisco

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