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

Seattle, WA (SEA) to San Luis Obispo, CA (SBP) flight delay odds

79.7% of 251 official scheduled SEA-to-SBP flights arrived on time; 10.8% arrived at least 30 minutes late and 0.8% 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 SIGNALGenerally reliable
79.7%arrived on time
10.8%30+ min late
0.8%cancelled
251scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.6%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+3.1 mincompleted flights

Which departure time was most reliable for SEA to SBP?

Only Afternoon met the SEA-to-SBP departure window threshold: 79.8% of 243 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Afternoon24379.8%11.1%0.8%

Which weekday was most reliable for SEA to SBP?

Among qualifying SEA-to-SBP weekday results, Sunday had the highest on-time rate: 86.1% of 36 flights. Saturday was lowest at 75.0% across 36 flights.

DayFlightsOn time30+ minCancelled
Monday3580.0%8.6%0.0%
Tuesday3683.3%5.6%0.0%
Wednesday3683.3%8.3%2.8%
Thursday3675.0%11.1%2.8%
Friday3675.0%16.7%0.0%
Saturday3675.0%19.4%0.0%
Sunday3686.1%5.6%0.0%

Which airline was most reliable for SEA to SBP?

Only Alaska Airlines met the SEA-to-SBP airline threshold: 78.9% of 223 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines22378.9%11.2%0.9%
SkyWest Airlines2885.7%7.1%0.0%

Which month was most reliable for SEA to SBP?

Among qualifying SEA-to-SBP month results, April 2026 had the highest on-time rate: 100.0% of 21 flights. December 2025 was lowest at 67.7% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20253171.0%12.9%0.0%
August 20253171.0%25.8%0.0%
September 20252889.3%3.6%3.6%
October 20253183.9%9.7%3.2%
November 20253083.3%3.3%0.0%
December 20253167.7%16.1%0.0%
April 202621100.0%0.0%0.0%
May 20261978.9%10.5%0.0%

What drove SEA to SBP delay minutes?

Late aircraft was the largest recorded SEA-to-SBP delay category, accounting for 46.2% of 2,416 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.3%
Late aircraft46.2%
National airspace12.6%
Weather1.0%
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.