$129 Cheap United flights San Diego (SAN) to Seattle (SEA)

View $129 flight on Mon, May 4, 2026Opens in a new window

$129 Cheap United flights San Diego (SAN) to Seattle (SEA)

Prices were available within the past 7 days and start at $129 for one-way flights and $187 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, May 4 - Thu, May 14
SAN
San Diego
SEA
Seattle
$187 Roundtrip, found 2 hours ago
$187
Roundtrip
found 2 hours ago
Select United flight, departing Mon, May 4 from San Diego to Seattle, returning Thu, May 14, priced at $187 found 2 hours ago
United
Tue, May 5 - Fri, May 15
SAN
San Diego
SEA
Seattle
$192 Roundtrip, found 1 day ago
$192
Roundtrip
found 1 day ago
Select United flight, departing Tue, May 5 from San Diego to Seattle, returning Fri, May 15, priced at $192 found 1 day ago

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

January is typically the cheapest month to fly

From $87 - $241 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $197
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $197
Flights from San Diego (SAN) to Seattle (SEA)
Origin airport
San Diego Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Delta
Distance
1681 km
Average flight time
3 hours 12 mins