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

Santa Ana, CA (SNA) to Seattle, WA (SEA) flight delay odds

84.5% of 3,965 official scheduled SNA-to-SEA flights arrived on time; 7.7% arrived at least 30 minutes late and 1.2% 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
84.5%arrived on time
7.7%30+ min late
1.2%cancelled
3,965scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.4%all scheduled flights
120+ minutes late1.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival-2.8 mincompleted flights

Which departure time was most reliable for SNA to SEA?

Among qualifying SNA-to-SEA departure window results, Early morning had the highest on-time rate: 90.7% of 1,091 flights. Evening was lowest at 77.0% across 1,001 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,09190.7%3.6%1.0%
Late morning75287.5%7.3%1.3%
Afternoon99482.3%9.7%0.5%
Evening1,00177.0%11.4%1.4%
Night12789.8%1.6%6.3%

Which weekday was most reliable for SNA to SEA?

Among qualifying SNA-to-SEA weekday results, Wednesday had the highest on-time rate: 88.5% of 537 flights. Friday was lowest at 81.1% across 593 flights.

DayFlightsOn time30+ minCancelled
Monday60484.6%7.5%1.0%
Tuesday55585.9%5.6%0.9%
Wednesday53788.5%7.1%0.0%
Thursday59483.2%8.4%0.8%
Friday59381.1%9.8%2.0%
Saturday49088.2%5.9%1.8%
Sunday59281.2%9.3%1.9%

Which airline was most reliable for SNA to SEA?

Among qualifying SNA-to-SEA airline results, Alaska Airlines had the highest on-time rate: 86.3% of 2,606 flights. Delta Air Lines was lowest at 80.0% across 954 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines2,60686.3%6.3%1.3%
Delta Air Lines95480.0%12.8%1.3%
SkyWest Airlines40583.7%5.2%0.2%

Which month was most reliable for SNA to SEA?

Among qualifying SNA-to-SEA month results, November 2025 had the highest on-time rate: 90.9% of 329 flights. August 2025 was lowest at 74.3% across 358 flights.

MonthFlightsOn time30+ minCancelled
July 202537878.6%8.5%2.1%
August 202535874.3%13.4%0.8%
September 202533088.2%5.2%0.6%
October 202534185.3%8.2%2.1%
November 202532990.9%4.3%1.2%
December 202531979.3%11.6%1.3%
January 202631288.5%5.4%1.6%
February 202628288.3%5.7%1.4%
March 202630882.8%7.8%2.6%
April 202630189.7%5.3%0.3%
May 202635390.7%4.5%0.3%
June 202635480.2%11.6%0.3%

What drove SNA to SEA delay minutes?

Late aircraft was the largest recorded SNA-to-SEA delay category, accounting for 43.8% of 31,338 BTS-attributed delay minutes during July 2025–June 2026.

Airline36.7%
Late aircraft43.8%
National airspace17.9%
Weather1.5%
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.