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

Phoenix, AZ (PHX) to Washington, DC (IAD) flight delay odds

83.4% of 1,098 official scheduled PHX-to-IAD flights arrived on time; 8.4% arrived at least 30 minutes late and 0.6% 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
83.4%arrived on time
8.4%30+ min late
0.6%cancelled
1,098scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late3.6%all scheduled flights
120+ minutes late1.5%all scheduled flights
Diverted0.9%did not reach as scheduled
Average arrival-0.9 mincompleted flights

Which departure time was most reliable for PHX to IAD?

Among qualifying PHX-to-IAD departure window results, Night had the highest on-time rate: 87.1% of 139 flights. Late morning was lowest at 78.7% across 286 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning38683.9%6.5%0.3%
Late morning28678.7%11.9%0.3%
Afternoon28785.7%8.4%0.3%
Night13987.1%6.5%2.9%

Which weekday was most reliable for PHX to IAD?

Among qualifying PHX-to-IAD weekday results, Saturday had the highest on-time rate: 87.6% of 153 flights. Sunday was lowest at 74.5% across 161 flights.

DayFlightsOn time30+ minCancelled
Monday15782.2%9.6%1.3%
Tuesday15383.7%9.2%0.0%
Wednesday15685.3%5.8%0.6%
Thursday15886.7%6.3%0.0%
Friday16084.4%8.1%0.0%
Saturday15387.6%6.5%0.0%
Sunday16174.5%13.0%2.5%

Which airline was most reliable for PHX to IAD?

Among qualifying PHX-to-IAD airline results, United Airlines had the highest on-time rate: 88.3% of 761 flights. Southwest Airlines was lowest at 72.4% across 337 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines76188.3%5.8%0.8%
Southwest Airlines33772.4%14.2%0.3%

Which month was most reliable for PHX to IAD?

Among qualifying PHX-to-IAD month results, January 2026 had the highest on-time rate: 94.9% of 98 flights. July 2025 was lowest at 68.5% across 92 flights.

MonthFlightsOn time30+ minCancelled
July 20259268.5%17.4%1.1%
August 20258976.4%11.2%1.1%
September 20258782.8%9.2%0.0%
October 20259783.5%9.3%0.0%
November 202510989.0%5.5%0.9%
December 202510888.0%6.5%0.0%
January 20269894.9%2.0%3.1%
February 20268192.6%2.5%0.0%
March 202611776.9%10.3%0.9%
April 20269184.6%12.1%0.0%
May 20269679.2%7.3%0.0%
June 20263387.9%6.1%0.0%

What drove PHX to IAD delay minutes?

Airline was the largest recorded PHX-to-IAD delay category, accounting for 48.5% of 9,183 BTS-attributed delay minutes during July 2025–June 2026.

Airline48.5%
Late aircraft26.0%
National airspace21.3%
Weather1.1%
Security3.2%
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.