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

Denver, CO (DEN) to Philadelphia, PA (PHL) flight delay odds

72.1% of 3,003 official scheduled DEN-to-PHL flights arrived on time; 17.4% arrived at least 30 minutes late and 1.2% 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
72.1%arrived on time
17.4%30+ min late
1.2%cancelled
3,003scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.4%all scheduled flights
120+ minutes late4.1%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+12.8 mincompleted flights

Which departure time was most reliable for DEN to PHL?

Among qualifying DEN-to-PHL departure window results, Early morning had the highest on-time rate: 83.8% of 395 flights. Evening was lowest at 58.6% across 701 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning39583.8%9.4%2.3%
Late morning77981.4%10.1%0.5%
Afternoon76570.5%19.5%0.9%
Evening70158.6%25.5%1.1%
Night36368.9%22.0%1.9%

Which weekday was most reliable for DEN to PHL?

Among qualifying DEN-to-PHL weekday results, Tuesday had the highest on-time rate: 80.2% of 399 flights. Sunday was lowest at 66.9% across 450 flights.

DayFlightsOn time30+ minCancelled
Monday44168.0%20.4%0.9%
Tuesday39980.2%12.8%1.8%
Wednesday41373.1%16.0%0.2%
Thursday45167.2%20.6%0.9%
Friday46273.6%16.9%0.6%
Saturday38777.3%14.0%0.8%
Sunday45066.9%20.4%2.9%

Which airline was most reliable for DEN to PHL?

Among qualifying DEN-to-PHL airline results, United Airlines had the highest on-time rate: 79.4% of 952 flights. Frontier Airlines was lowest at 61.0% across 295 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines95279.4%13.0%0.5%
Southwest Airlines87963.0%21.4%0.9%
American Airlines87777.0%14.4%1.8%
Frontier Airlines29561.0%29.2%2.0%

Which month was most reliable for DEN to PHL?

Among qualifying DEN-to-PHL month results, November 2025 had the highest on-time rate: 84.5% of 238 flights. July 2025 was lowest at 60.9% across 317 flights.

MonthFlightsOn time30+ minCancelled
July 202531760.9%27.1%2.5%
August 202531066.8%18.7%0.6%
September 202528276.6%11.7%0.0%
October 202524973.5%15.7%0.0%
November 202523884.5%9.7%0.0%
December 202523568.5%21.7%2.1%
January 202617680.7%10.2%4.0%
February 202617377.5%11.0%4.6%
March 202620566.8%21.0%1.0%
April 202622681.0%12.4%0.0%
May 202627671.0%19.2%0.4%
June 202631667.1%23.1%0.6%

What drove DEN to PHL delay minutes?

Late aircraft was the largest recorded DEN-to-PHL delay category, accounting for 42.6% of 60,618 BTS-attributed delay minutes during July 2025–June 2026.

Airline40.0%
Late aircraft42.6%
National airspace15.9%
Weather1.4%
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.