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

Portland, OR (PDX) to Boise, ID (BOI) flight delay odds

86.0% of 908 official scheduled PDX-to-BOI flights arrived on time; 7.2% 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 SIGNALLower disruption
86.0%arrived on time
7.2%30+ min late
0.8%cancelled
908scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.2%all scheduled flights
120+ minutes late1.0%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+0.4 mincompleted flights

Which departure time was most reliable for PDX to BOI?

Among qualifying PDX-to-BOI departure window results, Late morning had the highest on-time rate: 87.5% of 248 flights. Night was lowest at 84.5% across 296 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning24887.5%3.2%2.0%
Afternoon32686.5%7.7%0.0%
Night29684.5%9.1%0.7%

Which weekday was most reliable for PDX to BOI?

Among qualifying PDX-to-BOI weekday results, Tuesday had the highest on-time rate: 91.3% of 127 flights. Wednesday was lowest at 82.0% across 128 flights.

DayFlightsOn time30+ minCancelled
Monday13690.4%5.9%0.0%
Tuesday12791.3%4.7%0.8%
Wednesday12882.0%4.7%0.0%
Thursday13783.2%9.5%2.2%
Friday13786.1%8.0%0.0%
Saturday10683.0%6.6%2.8%
Sunday13785.4%10.2%0.0%

Which airline was most reliable for PDX to BOI?

Among qualifying PDX-to-BOI airline results, SkyWest Airlines had the highest on-time rate: 87.6% of 249 flights. Alaska Airlines was lowest at 85.4% across 659 flights.

AirlineFlightsOn time30+ minCancelled
Alaska Airlines65985.4%8.3%0.3%
SkyWest Airlines24987.6%4.0%2.0%

Which month was most reliable for PDX to BOI?

Among qualifying PDX-to-BOI month results, April 2026 had the highest on-time rate: 91.2% of 57 flights. November 2025 was lowest at 79.7% across 79 flights.

MonthFlightsOn time30+ minCancelled
July 20255886.2%1.7%0.0%
August 20257190.1%4.2%0.0%
September 20259087.8%4.4%0.0%
October 20258985.4%6.7%1.1%
November 20257979.7%10.1%6.3%
December 20257581.3%13.3%0.0%
January 20269788.7%6.2%0.0%
February 20268587.1%5.9%0.0%
March 20267489.2%6.8%0.0%
April 20265791.2%7.0%0.0%
May 20267682.9%9.2%1.3%
June 20265782.5%10.5%0.0%

What drove PDX to BOI delay minutes?

Late aircraft was the largest recorded PDX-to-BOI delay category, accounting for 56.9% of 5,728 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.3%
Late aircraft56.9%
National airspace14.4%
Weather0.4%
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.