Route · RIW → DEN · 2020–2025 BTS data
Riverton/Lander to Denver
The RIW–DEN corridor (Riverton/Lander, WY → Denver, CO) runs ahead of the national average, served by 1 carrier across roughly 296 miles.
Data updated 2026-06-13
- 83.8%
- On-time
- +4.8 pts
- vs US avg
- 135 min
- Delay when late
- 2,989
- Flights
Cancelled
1.2%
Best Month
Sep 2025 98%
Worst Month
Jul 2025 73%
Distance
296 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 62 | 9 | 0 | 0 | OO |
| Nov 2025 | 59 | 8 | 0 | 0 | OO |
| Oct 2025 | 62 | 14 | 0 | 0 | OO |
| Sep 2025 | 60 | 1 | 0 | 1 | OO |
| Aug 2025 | 62 | 11 | 1 | 2 | OO |
| Jul 2025 | 62 | 17 | 1 | 1 | OO |
| Jun 2025 | 60 | 13 | 0 | 0 | OO |
| May 2025 | 62 | 11 | 0 | 2 | OO |
| Apr 2025 | 60 | 14 | 0 | 0 | OO |
| Mar 2025 | 62 | 6 | 0 | 0 | OO |
| Feb 2025 | 56 | 5 | 0 | 0 | OO |
| Jan 2025 | 62 | 12 | 3 | 0 | OO |
| Dec 2024 | 62 | 3 | 0 | 0 | OO |
| Nov 2024 | 59 | 10 | 2 | 0 | OO |
| Oct 2024 | 62 | 11 | 0 | 0 | OO |
| Sep 2024 | 60 | 8 | 0 | 0 | OO |
| Aug 2024 | 62 | 16 | 0 | 0 | OO |
| Jul 2024 | 62 | 8 | 0 | 0 | OO |
| Jun 2024 | 60 | 8 | 2 | 1 | OO |
| May 2024 | 39 | 3 | 0 | 0 | OO |
| Apr 2024 | 39 | 5 | 0 | 0 | OO |
| Mar 2024 | 40 | 1 | 2 | 0 | OO |
| Feb 2024 | 38 | 5 | 3 | 1 | OO |
| Jan 2024 | 39 | 5 | 2 | 0 | OO |
Cancellation Rate
1.2%
16 of 1,351 flights
Diversion Rate
0.6%
8 of 1,351 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
RIW - Riverton/Lander
Full on-time, delay-cause, and seasonal performance for Riverton/Lander, WY.
Origin airport →DEN - Denver
Full on-time, delay-cause, and seasonal performance for Denver, CO.
Destination airport →Compare the two airports
See RIW and DEN side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to RIW–DEN.
Routes with a similar on-time rate
What the Data Says About RIW to DEN
Bureau of Transportation Statistics records show Riverton/Lander to Denver (RIW to DEN) running a 83.8% on-time rate over 2,989 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 134.8 minutes. The 296-mile corridor is served by 1 carrier, and over the last 24 months 1.2% of 1,351 flights were cancelled, 0.6% diverted.
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 98% on-time, while Jul 2025 came in at just 73% - a 26-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.