Santa Rosa (STS) to San Diego (SAN) flights
2 airlines fly nonstop from Santa Rosa (STS) to San Diego (SAN): Alaska Airlines and Southwest Airlines. The two airports are 508 miles (818 km) apart. Alaska Airlines is in oneworld. There are also 6 ways to fly it with one stop, through Los Angeles, Las Vegas and Phoenix and more.
Airlines flying nonstop from STS to SAN
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- Southwest AirlinesNot in an allianceWho books it
Book STS to SAN 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 SAN with one stop
6 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Los Angeles (LAX)Alaska Airlines, then Delta Air Lines and United Airlines
- Via Las Vegas (LAS)Alaska Airlines and Southwest Airlines the whole way+1
- Via Phoenix (PHX)American Airlines and Alaska Airlines the whole way
+1 - Via Salt Lake City (SLC)Delta Air Lines the whole way
- Via Boise (BOI)Alaska Airlines the whole way
- Via Portland (PDX)Alaska Airlines the whole way
STS to SAN: common questions
Which airlines fly nonstop from STS to SAN?
Alaska Airlines (oneworld) and Southwest Airlines fly nonstop from Santa Rosa (STS) to San Diego (SAN).
How far is Santa Rosa from San Diego by plane?
Santa Rosa (STS) and San Diego (SAN) are 508 miles (818 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 SAN 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 SAN 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 SAN with taxes and fees.
Where can I connect between Santa Rosa and San Diego?
The most direct connections are through Los Angeles (LAX), Las Vegas (LAS), Phoenix (PHX), Salt Lake City (SLC) and Boise (BOI). On 5 of them the same airline flies both flights, for example Alaska Airlines through Las Vegas.
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.