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

Detroit, MI (DTW) to Portland, OR (PDX) flight delay odds

66.9% of 390 official scheduled DTW-to-PDX flights arrived on time; 22.3% 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 SIGNALVariable
66.9%arrived on time
22.3%30+ min late
0.8%cancelled
390scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.9%all scheduled flights
120+ minutes late1.5%all scheduled flights
Diverted0.5%did not reach as scheduled
Average arrival+15.3 mincompleted flights

Which departure time was most reliable for DTW to PDX?

Among qualifying DTW-to-PDX departure window results, Early morning had the highest on-time rate: 81.8% of 121 flights. Evening was lowest at 57.1% across 233 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning12181.8%10.7%0.0%
Evening23357.1%29.6%1.3%

Which weekday was most reliable for DTW to PDX?

Among qualifying DTW-to-PDX weekday results, Friday had the highest on-time rate: 72.1% of 61 flights. Monday was lowest at 64.5% across 62 flights.

DayFlightsOn time30+ minCancelled
Monday6264.5%19.4%1.6%
Tuesday5066.0%22.0%0.0%
Wednesday4965.3%22.4%0.0%
Thursday6165.6%26.2%0.0%
Friday6172.1%14.8%1.6%
Saturday4369.8%23.3%0.0%
Sunday6465.6%28.1%1.6%

Which airline was most reliable for DTW to PDX?

Only Delta Air Lines met the DTW-to-PDX airline threshold: 66.9% of 390 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines39066.9%22.3%0.8%

Which month was most reliable for DTW to PDX?

Among qualifying DTW-to-PDX month results, September 2025 had the highest on-time rate: 90.5% of 42 flights. December 2025 was lowest at 12.9% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20255763.2%26.3%0.0%
August 20255080.0%14.0%0.0%
September 20254290.5%7.1%0.0%
October 20254885.4%8.3%0.0%
November 20252958.6%24.1%0.0%
December 20253112.9%67.7%3.2%
March 20262433.3%37.5%4.2%
April 20263076.7%10.0%0.0%
May 20263158.1%32.3%3.2%
June 20264475.0%15.9%0.0%

What drove DTW to PDX delay minutes?

Airline was the largest recorded DTW-to-PDX delay category, accounting for 63.0% of 7,467 BTS-attributed delay minutes during July 2025–June 2026.

Airline63.0%
Late aircraft14.9%
National airspace21.1%
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.