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

Riverton/Lander, WY (RIW) to Denver, CO (DEN) flight delay odds

81.2% of 728 official scheduled RIW-to-DEN flights arrived on time; 12.5% arrived at least 30 minutes late and 0.4% 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
81.2%arrived on time
12.5%30+ min late
0.4%cancelled
728scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.0%all scheduled flights
120+ minutes late7.6%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+13.1 mincompleted flights

Which departure time was most reliable for RIW to DEN?

Among qualifying RIW-to-DEN departure window results, Early morning had the highest on-time rate: 85.1% of 363 flights. Afternoon was lowest at 77.2% across 364 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36385.1%10.2%0.6%
Afternoon36477.2%14.8%0.3%

Which weekday was most reliable for RIW to DEN?

Among qualifying RIW-to-DEN weekday results, Wednesday had the highest on-time rate: 85.4% of 103 flights. Saturday was lowest at 74.0% across 104 flights.

DayFlightsOn time30+ minCancelled
Monday10481.7%13.5%0.0%
Tuesday10684.9%11.3%0.0%
Wednesday10385.4%10.7%1.0%
Thursday10378.6%13.6%0.0%
Friday10480.8%8.7%1.0%
Saturday10474.0%16.3%0.0%
Sunday10482.7%13.5%1.0%

Which airline was most reliable for RIW to DEN?

Only SkyWest Airlines met the RIW-to-DEN airline threshold: 81.2% of 728 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines72881.2%12.5%0.4%

Which month was most reliable for RIW to DEN?

Among qualifying RIW-to-DEN month results, September 2025 had the highest on-time rate: 96.7% of 60 flights. July 2025 was lowest at 69.4% across 62 flights.

MonthFlightsOn time30+ minCancelled
July 20256269.4%16.1%1.6%
August 20256277.4%8.1%1.6%
September 20256096.7%0.0%0.0%
October 20256277.4%17.7%0.0%
November 20255986.4%8.5%0.0%
December 20256285.5%8.1%0.0%
January 20266287.1%9.7%0.0%
February 20265587.3%10.9%0.0%
March 20266277.4%14.5%0.0%
April 20266080.0%18.3%0.0%
May 20266280.6%12.9%1.6%
June 20266070.0%25.0%0.0%

What drove RIW to DEN delay minutes?

Airline was the largest recorded RIW-to-DEN delay category, accounting for 55.6% of 17,413 BTS-attributed delay minutes during July 2025–June 2026.

Airline55.6%
Late aircraft24.6%
National airspace9.5%
Weather10.2%
Security0.1%
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.