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Cheap Flights from San Diego to Seattle
SAN → SEA • About 2h 55m nonstop • 3 airlines
Adults
+12 years old
Children
2-11 years old
Infants
Under 2 years
Fares shown are the lowest we have recorded recently on this route and are not a live quote. Run a search above for today's availability, or call (800) 399-8818 and an agent will price it with you.
Flights from San Diego (SAN) to Seattle (SEA)
The San Diego to Seattle route covers roughly 1,050 miles and takes about 2h 55m nonstop. 3 airlines compete on it — Alaska Airlines, Southwest Airlines, Delta Air Lines — which keeps fares moving and makes it worth comparing carriers rather than defaulting to the one you usually fly. We have seen one-way fares on this route start around $88.
Seattle sits between Puget Sound and the Cascades, and on a clear day Mount Rainier dominates the southern horizon. Pike Place Market, the waterfront and the Space Needle cover the classic itinerary in a single day.
It is also the natural jumping-off point for the Olympic Peninsula, the San Juan Islands and, by ferry or short flight, Vancouver and Victoria.
Airlines flying SAN to SEA
- Alaska Airlines
- Southwest Airlines
- Delta Air Lines
Airports on this route
- Departing: San Diego International Airport (SAN)
- Arriving: Seattle-Tacoma International Airport (SEA)
Best time to fly to Seattle
July through September, which is reliably dry and mild — the rest of the year is grey and wet, though rarely freezing.
Top things to do in Seattle
- Pike Place Market
- Space Needle
- Chihuly Garden and Glass
- Museum of Pop Culture
- Kerry Park viewpoint
- Mount Rainier National Park
- Ballard Locks
How to save on San Diego to Seattle flights
- Shift your departure by one or two days — midweek departures on this route are consistently cheaper than Friday and Sunday.
- Book four to eight weeks ahead. Last-minute fares on SAN to SEA routinely run double the advance price.
- Compare all 3 carriers rather than checking one airline's own site.
- Summer is peak season and prices show it; May and late September are much better value with decent weather.
- The Link light rail runs from the airport to downtown in about 40 minutes.
- Ferries to Bainbridge Island make an excellent half-day trip and cost very little on foot.
About flights from San Diego to Seattle
Fares on the SAN to SEA route move with demand, so flexibility is worth more than timing tricks. Shifting your departure by a day or two, flying midweek instead of Friday or Sunday, and booking four to eight weeks ahead all reduce the fare on this route. Our agents also hold consolidator and unpublished fares that do not appear in online results.
Alaska Airlines, Southwest Airlines, Delta Air Lines all operate on this route. Alaska Airlines typically offers the most frequencies, with Southwest Airlines and Delta Air Lines providing competing schedules. Availability varies by season and by which San Diego airport you depart from, so it is worth comparing all carriers before booking.
A nonstop flight takes about 2h 55m. Itineraries with a connection typically add two to four hours depending on the layover city and the length of the stop.
The two cities are roughly 1,050 miles apart by air.
Departures leave from San Diego International Airport (SAN). Arrivals land at Seattle-Tacoma International Airport (SEA).
July through September, which is reliably dry and mild — the rest of the year is grey and wet, though rarely freezing.