San Diego to Seattle in August 2026

Dated one-way fares from San Diego to Seattle in August 2026. Use the calendar to see which days are cheaper.

Lowest this month $170

Highest this month $176

Sample fare $74

Airports SAN–SEA

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August 2026 price calendar

From $170 · up to $176

Mon

Tue

Wed

Thu

Fri

Sat

Sun

26 $170 27 $176 28 $176 29 $176 30 $176

Seattle SEA

$74

Sep 12, 4:40pm · 3h · 0 stops

SAN → SEA · Southwest Airlines

Seattle SEA

$143

Sep 01, 7:15am · 3h 10m · 0 stops

SAN → SEA · Alaska Airlines

This page is only August 2026 on the San Diego to Seattle route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book San Diego to Seattle in August 2026.