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

Atlanta, GA (ATL) to Portland, OR (PDX) flight delay odds

78.7% of 1,576 official scheduled ATL-to-PDX flights arrived on time; 11.5% arrived at least 30 minutes late and 0.9% 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
78.7%arrived on time
11.5%30+ min late
0.9%cancelled
1,576scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.0%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+4.9 mincompleted flights

Which departure time was most reliable for ATL to PDX?

Among qualifying ATL-to-PDX departure window results, Late morning had the highest on-time rate: 85.8% of 204 flights. Evening was lowest at 74.5% across 689 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning34283.6%7.0%1.8%
Late morning20485.8%5.9%0.5%
Afternoon31078.1%11.9%0.6%
Evening68974.5%15.2%0.6%

Which weekday was most reliable for ATL to PDX?

Among qualifying ATL-to-PDX weekday results, Saturday had the highest on-time rate: 82.1% of 212 flights. Monday was lowest at 74.3% across 230 flights.

DayFlightsOn time30+ minCancelled
Monday23074.3%14.3%0.4%
Tuesday22981.7%9.2%0.4%
Wednesday22480.4%9.8%0.4%
Thursday22581.8%8.4%1.3%
Friday22976.0%15.7%0.0%
Saturday21282.1%9.9%1.4%
Sunday22775.3%13.2%2.2%

Which airline was most reliable for ATL to PDX?

Among qualifying ATL-to-PDX airline results, Alaska Airlines had the highest on-time rate: 81.5% of 286 flights. Delta Air Lines was lowest at 78.1% across 1,288 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,28878.1%11.4%1.0%
Alaska Airlines28681.5%12.2%0.3%
American Airlines1100.0%0.0%0.0%
Southwest Airlines1100.0%0.0%0.0%

Which month was most reliable for ATL to PDX?

Among qualifying ATL-to-PDX month results, September 2025 had the highest on-time rate: 93.1% of 145 flights. March 2026 was lowest at 63.8% across 105 flights.

MonthFlightsOn time30+ minCancelled
July 202517877.0%15.2%1.1%
August 202516387.1%10.4%0.0%
September 202514593.1%3.4%0.0%
October 202515479.2%10.4%0.0%
November 202514075.0%12.1%1.4%
December 202512267.2%15.6%0.8%
January 20269577.9%11.6%3.2%
February 20268072.5%11.2%2.5%
March 202610563.8%18.1%1.9%
April 202611686.2%6.0%1.7%
May 202612977.5%13.2%0.0%
June 202614979.9%12.1%0.0%

What drove ATL to PDX delay minutes?

Airline was the largest recorded ATL-to-PDX delay category, accounting for 35.9% of 16,897 BTS-attributed delay minutes during July 2025–June 2026.

Airline35.9%
Late aircraft23.4%
National airspace32.6%
Weather7.3%
Security0.7%
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.