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

Milwaukee, WI (MKE) to Seattle, WA (SEA) flight delay odds

79.2% of 509 official scheduled MKE-to-SEA flights arrived on time; 7.9% 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 SIGNALGenerally reliable
79.2%arrived on time
7.9%30+ min late
0.4%cancelled
509scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late2.9%all scheduled flights
120+ minutes late1.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+1.1 mincompleted flights

Which departure time was most reliable for MKE to SEA?

Among qualifying MKE-to-SEA departure window results, Early morning had the highest on-time rate: 86.3% of 183 flights. Afternoon was lowest at 75.2% across 326 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning18386.3%5.5%0.5%
Afternoon32675.2%9.2%0.3%

Which weekday was most reliable for MKE to SEA?

Among qualifying MKE-to-SEA weekday results, Sunday had the highest on-time rate: 87.2% of 78 flights. Tuesday was lowest at 69.6% across 69 flights.

DayFlightsOn time30+ minCancelled
Monday7880.8%3.8%1.3%
Tuesday6969.6%8.7%0.0%
Wednesday6479.7%14.1%0.0%
Thursday7680.3%6.6%1.3%
Friday7972.2%10.1%0.0%
Saturday6584.6%6.2%0.0%
Sunday7887.2%6.4%0.0%

Which airline was most reliable for MKE to SEA?

Only Alaska Airlines met the MKE-to-SEA airline threshold: 79.2% of 509 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines50979.2%7.9%0.4%

Which month was most reliable for MKE to SEA?

Among qualifying MKE-to-SEA month results, April 2026 had the highest on-time rate: 100.0% of 35 flights. December 2025 was lowest at 56.1% across 41 flights.

MonthFlightsOn time30+ minCancelled
July 20256180.3%13.1%0.0%
August 20256285.5%6.5%0.0%
September 20256083.3%5.0%1.7%
October 20253476.5%5.9%0.0%
November 20253372.7%9.1%0.0%
December 20254156.1%14.6%0.0%
January 20262560.0%20.0%0.0%
February 20261877.8%5.6%0.0%
March 20262661.5%11.5%3.8%
April 202635100.0%0.0%0.0%
May 20265589.1%3.6%0.0%
June 20265983.1%5.1%0.0%

What drove MKE to SEA delay minutes?

National airspace was the largest recorded MKE-to-SEA delay category, accounting for 38.4% of 3,961 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.4%
Late aircraft15.8%
National airspace38.4%
Weather10.5%
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.