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

Raleigh/Durham, NC (RDU) to Denver, CO (DEN) flight delay odds

79.0% of 1,771 official scheduled RDU-to-DEN flights arrived on time; 12.7% 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 SIGNALGenerally reliable
79.0%arrived on time
12.7%30+ min late
0.8%cancelled
1,771scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.1%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+5.3 mincompleted flights

Which departure time was most reliable for RDU to DEN?

Among qualifying RDU-to-DEN departure window results, Early morning had the highest on-time rate: 90.9% of 727 flights. Evening was lowest at 62.7% across 466 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning72790.9%3.4%1.1%
Late morning5988.1%6.8%1.7%
Afternoon50175.8%16.2%0.4%
Evening46662.7%24.2%0.6%

Which weekday was most reliable for RDU to DEN?

Among qualifying RDU-to-DEN weekday results, Wednesday had the highest on-time rate: 84.4% of 231 flights. Monday was lowest at 73.4% across 267 flights.

DayFlightsOn time30+ minCancelled
Monday26773.4%16.1%0.7%
Tuesday24684.1%9.3%0.0%
Wednesday23184.4%8.2%0.0%
Thursday26278.2%12.6%0.8%
Friday26575.1%17.7%0.0%
Saturday23881.1%12.2%0.8%
Sunday26277.9%11.8%3.4%

Which airline was most reliable for RDU to DEN?

Among qualifying RDU-to-DEN airline results, United Airlines had the highest on-time rate: 85.4% of 776 flights. Southwest Airlines was lowest at 73.2% across 709 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines77685.4%9.4%0.6%
Southwest Airlines70973.2%15.2%0.8%
Frontier Airlines28675.9%15.4%1.4%

Which month was most reliable for RDU to DEN?

Among qualifying RDU-to-DEN month results, May 2026 had the highest on-time rate: 88.4% of 155 flights. July 2025 was lowest at 65.0% across 183 flights.

MonthFlightsOn time30+ minCancelled
July 202518365.0%24.0%0.5%
August 202516369.3%19.0%1.2%
September 202513380.5%13.5%0.0%
October 202513684.6%9.6%0.0%
November 202513884.8%7.2%0.0%
December 202514769.4%17.7%0.0%
January 202613881.9%7.2%5.8%
February 202612886.7%9.4%1.6%
March 202614984.6%12.1%0.7%
April 202614783.0%9.5%0.0%
May 202615588.4%7.1%0.6%
June 202615476.0%11.7%0.0%

What drove RDU to DEN delay minutes?

Late aircraft was the largest recorded RDU-to-DEN delay category, accounting for 43.0% of 23,946 BTS-attributed delay minutes during July 2025–June 2026.

Airline21.9%
Late aircraft43.0%
National airspace29.4%
Weather5.0%
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.