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

Seattle, WA (SEA) to Sacramento, CA (SMF) flight delay odds

81.4% of 4,407 official scheduled SEA-to-SMF flights arrived on time; 10.0% arrived at least 30 minutes late and 0.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
81.4%arrived on time
10.0%30+ min late
0.4%cancelled
4,407scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.3%all scheduled flights
120+ minutes late1.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+1.9 mincompleted flights

Which departure time was most reliable for SEA to SMF?

Among qualifying SEA-to-SMF departure window results, Early morning had the highest on-time rate: 92.7% of 890 flights. Night was lowest at 69.9% across 375 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning89092.7%3.4%0.2%
Late morning91981.5%9.2%0.3%
Afternoon1,20580.5%9.4%0.5%
Evening1,01876.7%14.1%0.4%
Night37569.9%17.9%0.8%

Which weekday was most reliable for SEA to SMF?

Among qualifying SEA-to-SMF weekday results, Tuesday had the highest on-time rate: 84.6% of 623 flights. Friday was lowest at 77.9% across 675 flights.

DayFlightsOn time30+ minCancelled
Monday67682.7%9.3%0.1%
Tuesday62384.6%7.7%0.5%
Wednesday60584.5%7.6%0.0%
Thursday67178.4%11.0%0.4%
Friday67577.9%12.9%0.9%
Saturday50683.2%8.5%0.6%
Sunday65179.4%12.0%0.3%

Which airline was most reliable for SEA to SMF?

Among qualifying SEA-to-SMF airline results, SkyWest Airlines had the highest on-time rate: 88.8% of 1,941 flights. Southwest Airlines was lowest at 71.4% across 1,156 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,94188.8%5.9%0.3%
Alaska Airlines1,31079.2%10.8%0.6%
Southwest Airlines1,15671.4%15.8%0.4%

Which month was most reliable for SEA to SMF?

Among qualifying SEA-to-SMF month results, April 2026 had the highest on-time rate: 87.5% of 369 flights. July 2025 was lowest at 73.0% across 455 flights.

MonthFlightsOn time30+ minCancelled
July 202545573.0%15.6%0.7%
August 202542777.3%12.6%0.2%
September 202539883.9%5.8%0.3%
October 202537584.3%9.3%0.8%
November 202535083.4%8.0%0.6%
December 202529473.1%16.7%0.3%
January 202631182.3%9.3%0.0%
February 202628184.7%8.5%0.0%
March 202635079.4%11.4%2.0%
April 202636987.5%5.7%0.0%
May 202638985.1%8.0%0.0%
June 202640883.8%8.3%0.0%

What drove SEA to SMF delay minutes?

Late aircraft was the largest recorded SEA-to-SMF delay category, accounting for 43.8% of 39,661 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.6%
Late aircraft43.8%
National airspace8.0%
Weather7.4%
Security0.3%
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.