Compare fares and flight options for San Diego — Seattle. Prices can change; check availability when searching.
A non-stop flight is the most convenient and comfortable way to fly from San Diego to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
Answers to questions about the route that travelers are most interested in.
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We compared the cheapest offers found for San Diego to Seattle by departure month. Fares start at $63 in December 2026. In November 2026, even the cheapest offer found costs $122, the highest monthly starting fare in this sample.
San Diego — Seattle
12/12/2026
Departure
Direct flight
WN547
starting at $45
San Diego — Seattle
12/25/2026
Departure
Direct flight
WN713
starting at $121
San Diego — Seattle
12/21/2026
Departure
Direct flight
AS1373
starting at $125
San Diego — Seattle
12/24/2026
Departure
Direct flight
AS683
starting at $138
San Diego — Seattle
12/22/2026
Departure
Direct flight
AS1373
starting at $139
San Diego — Seattle
12/23/2026
Departure
Direct flight
AS574
starting at $139
San Diego — Seattle
11/25/2026
Departure
Direct flight
AS1368
starting at $206
San Diego — Seattle
07/01/2027
Departure
Direct flight
AS1431
starting at $216
San Diego — Seattle
11/24/2026
Departure
Direct flight
AS574
starting at $218
San Diego — Seattle
11/18/2026
Departure
Direct flight
AS574
starting at $235
Southwest Airlines
Fr and Sa
starting at $45
Alaska Airlines
Su, Mo, Tu, We, Th, and Fr
starting at $95
Offers from several airlines were found for San Diego — Seattle: Southwest Airlines, Alaska Airlines, and Frontier Airlines. The lowest fare in the selection is $45.
Direct offers from San Diego to Seattle were found for these airlines: Southwest Airlines: Fr and Sa; Alaska Airlines: Su, Mo, Tu, We, Th, and Fr.
Weekdays and prices come from the offers found. This is not a complete schedule; availability and flight frequency can change.
The cheapest one-way flight from San Diego to Seattle departs on 12/12/2026, is operated by Southwest Airlines and costs $45
The cheapest roundtrip flight from San Diego to Seattle departs on 12/12/2026, is operated by Southwest Airlines and costs $93
Fastest flight from San Diego to Seattle takes 3h 5m
Direct offers were found for every day of the week.
The average outbound duration among direct offers for San Diego to Seattle is 3h 16m. The found offers from San Diego to Seattle depart between 6:25 AM and 8:23 PM, in the origin city’s time zone. The straight-line distance between San Diego and Seattle is 1712km.
Direct-flight weekdays and the fastest option are based on the offers found.
Duration and departure times are based on found offers, not the full schedule. Times use the origin city’s time zone.
The cheapest flight ticket from San Diego to Seattle according to data for the last 48 hours costs $45
The lowest prices in the available monthly data for San Diego — Seattle are in: December, November. Prices can change.
The shortest duration among the offers found for San Diego — Seattle is 3 hours 5 minutes, including connections if present.
Direct flight offers from San Diego to Seattle were found for: Southwest Airlines, Alaska Airlines
We couldn't find any special offers for flights from San Diego to Seattle