Riverton/Lander (RIW) to Denver (DEN): On-Time Performance
Data through July 2026
When you fly RIW to DEN matters as much as anything else about the booking: the route swung from 97% on-time in September 2025 to just 70% in June 2026. Across the full period the route averages 83% on-time against a national 78%.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 26 min
- completed flights
- Cancelled
- 0.5%
- Flights/day
- 2.0
- last 12 months
- Duration
- 1h 22m
- scheduled
- Distance
- 296 mi
Monthly on-time trend
Best time to fly from RIW to DEN
Aim for departures around 5 a.m. (87% on-time); avoid 1 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 86% | 21 min |
| Tuesday | 82% | 28 min |
| Wednesday | 85% | 20 min |
| Thursday | 80% | 25 min |
| Friday | 83% | 19 min |
| Saturday | 78% | 40 min |
| Sunday | 84% | 27 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft28%
- Airline operations52%
- National airspace system10%
- Weather10%
Frequently asked questions
- How often are flights from RIW to DEN delayed?
- 18% of RIW–DEN flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 26 minutes.
- What is the best time of day to fly from RIW to DEN?
- Departures around 5 a.m. have the best record (87% on-time), while departures around 1 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from RIW to DEN?
- The scheduled RIW–DEN flight time averages 1h 22m over 296 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are RIW to DEN flights cancelled?
- 0.5% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from RIW to DEN?
- June 2026 was the roughest month in this dataset, with only 70% of arrivals on time. The best was September 2025 at 97%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 1,519 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.