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

New Orleans, LA (MSY) to Seattle, WA (SEA) flight delay odds

70.9% of 626 official scheduled MSY-to-SEA flights arrived on time; 16.5% 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
70.9%arrived on time
16.5%30+ min late
0.8%cancelled
626scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.8%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.3 mincompleted flights

Which departure time was most reliable for MSY to SEA?

Among qualifying MSY-to-SEA departure window results, Early morning had the highest on-time rate: 72.7% of 282 flights. Evening was lowest at 69.4% across 291 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning28272.7%13.8%0.0%
Afternoon5369.8%15.1%0.0%
Evening29169.4%19.2%1.7%

Which weekday was most reliable for MSY to SEA?

Among qualifying MSY-to-SEA weekday results, Tuesday had the highest on-time rate: 76.2% of 84 flights. Monday was lowest at 66.3% across 95 flights.

DayFlightsOn time30+ minCancelled
Monday9566.3%16.8%0.0%
Tuesday8476.2%13.1%1.2%
Wednesday8273.2%17.1%1.2%
Thursday9270.7%17.4%0.0%
Friday9366.7%15.1%2.2%
Saturday8572.9%16.5%1.2%
Sunday9571.6%18.9%0.0%

Which airline was most reliable for MSY to SEA?

Only Alaska Airlines met the MSY-to-SEA airline threshold: 70.7% of 621 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines62170.7%16.6%0.8%
Delta Air Lines5100.0%0.0%0.0%

Which month was most reliable for MSY to SEA?

Among qualifying MSY-to-SEA month results, April 2026 had the highest on-time rate: 86.7% of 60 flights. March 2026 was lowest at 59.1% across 44 flights.

MonthFlightsOn time30+ minCancelled
July 20256170.5%18.0%0.0%
August 20255766.7%21.1%0.0%
September 20254877.1%10.4%2.1%
October 20255362.3%22.6%1.9%
November 20255967.8%10.2%1.7%
December 20255466.7%20.4%0.0%
January 20263677.8%22.2%0.0%
February 20263281.2%9.4%0.0%
March 20264459.1%25.0%2.3%
April 20266086.7%8.3%0.0%
May 20266275.8%11.3%0.0%
June 20266063.3%20.0%1.7%

What drove MSY to SEA delay minutes?

Late aircraft was the largest recorded MSY-to-SEA delay category, accounting for 47.9% of 9,052 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.9%
Late aircraft47.9%
National airspace24.4%
Weather2.3%
Security2.5%
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.