BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SEASTS

Seattle, WA (SEA) to Santa Rosa, CA (STS) flight delay odds

Historically, 79.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 428 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
79.9%arrived on time
10.3%30+ min late
2.1%cancelled
428scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.7%all scheduled flights
120+ minutes late0.9%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+0.8 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Late morning25879.1%11.2%0.8%
Afternoon4597.8%0.0%0.0%
Evening10579.0%14.3%1.0%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday6581.5%7.7%0.0%
Tuesday5886.2%10.3%0.0%
Wednesday5780.7%12.3%0.0%
Thursday6484.4%7.8%1.6%
Friday6368.3%14.3%9.5%
Saturday5678.6%12.5%0.0%
Sunday6580.0%7.7%3.1%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines35681.7%8.4%2.5%
SkyWest Airlines7270.8%19.4%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 20256162.3%24.6%0.0%
August 20256277.4%14.5%1.6%
September 20256085.0%8.3%0.0%
October 20253390.9%3.0%0.0%
November 20253997.4%2.6%0.0%
December 20253053.3%20.0%6.7%
January 20262045.0%5.0%25.0%
February 2026683.3%0.0%16.7%
March 202614100.0%0.0%0.0%
April 20263096.7%0.0%0.0%
May 202631100.0%0.0%0.0%
June 20264278.6%14.3%0.0%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline33.7%
Late aircraft45.4%
National airspace20.1%
Weather0.8%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.