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

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

Historically, 83.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,098 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

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

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.