Santa Rosa (STS) to Seattle (SEA) flights
One airline flies nonstop from Santa Rosa (STS) to Seattle (SEA): Alaska Airlines. The two airports are 618 miles (994 km) apart. Alaska Airlines is in oneworld. There are also 9 ways to fly it with one stop, through Portland, Boise and Salt Lake City and more.
Airlines flying nonstop from STS to SEA
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
Book STS to SEA with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
STS to SEA with one stop
9 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Portland (PDX)Alaska Airlines the whole way
- Via Boise (BOI)Alaska Airlines the whole way
- Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Las Vegas (LAS)Alaska Airlines and Southwest Airlines the whole way
+2 - Via Burbank (BUR)Alaska Airlines the whole way
- Via Los Angeles (LAX)Alaska Airlines the whole way
+2 - Via Ontario (ONT)Alaska Airlines the whole way
- Via Santa Ana (SNA)Alaska Airlines the whole way
- Via Palm Springs (PSP)Alaska Airlines the whole way
STS to SEA: common questions
Which airlines fly nonstop from STS to SEA?
Alaska Airlines (oneworld) flies nonstop from Santa Rosa (STS) to Seattle (SEA).
How far is Santa Rosa from Seattle by plane?
Santa Rosa (STS) and Seattle (SEA) are 618 miles (994 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book STS to SEA award flights?
9 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Finnair Plus, Iberia Club, JAL Mileage Bank, Qantas Frequent Flyer and 1 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does STS to SEA cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for STS to SEA with taxes and fees.
Where can I connect between Santa Rosa and Seattle?
The most direct connections are through Portland (PDX), Boise (BOI), Salt Lake City (SLC), Las Vegas (LAS) and Burbank (BUR). On 9 of them the same airline flies both flights, for example Alaska Airlines through Portland.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.