Route · IAD → LAS · 2020–2025 BTS data
Washington to Las Vegas
The IAD–LAS corridor (Washington, DC → Las Vegas, NV) runs ahead of the national average, served by 5 carriers across roughly 2,065 miles.
Data updated 2026-06-13
- 83.9%
- On-time
- +4.9 pts
- vs US avg
- 71 min
- Delay when late
- 4,687
- Flights
Cancelled
0.5%
Best Month
Oct 2024 98%
Worst Month
Jun 2025 66%
Distance
2,065 mi
Carriers
5
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 92 | 8 | 0 | 0 | UA |
| Nov 2025 | 89 | 6 | 0 | 0 | UA |
| Oct 2025 | 93 | 12 | 0 | 0 | UA |
| Sep 2025 | 91 | 8 | 0 | 0 | UA,F9 |
| Aug 2025 | 119 | 24 | 0 | 1 | F9,UA |
| Jul 2025 | 123 | 36 | 0 | 0 | UA,F9 |
| Jun 2025 | 111 | 38 | 0 | 0 | UA,F9 |
| May 2025 | 144 | 33 | 0 | 2 | UA,F9 |
| Apr 2025 | 120 | 30 | 1 | 0 | UA |
| Mar 2025 | 100 | 18 | 0 | 0 | UA |
| Feb 2025 | 100 | 25 | 0 | 0 | UA |
| Jan 2025 | 92 | 29 | 1 | 0 | UA |
| Dec 2024 | 80 | 17 | 0 | 0 | UA |
| Nov 2024 | 89 | 9 | 1 | 0 | UA |
| Oct 2024 | 93 | 2 | 0 | 0 | UA |
| Sep 2024 | 80 | 7 | 0 | 0 | UA |
| Aug 2024 | 57 | 15 | 1 | 0 | UA |
| Jul 2024 | 62 | 12 | 2 | 0 | UA |
| Jun 2024 | 60 | 8 | 1 | 0 | UA |
| May 2024 | 84 | 12 | 0 | 0 | UA |
| Apr 2024 | 90 | 8 | 1 | 0 | UA |
| Mar 2024 | 90 | 7 | 0 | 1 | UA |
| Feb 2024 | 83 | 13 | 0 | 0 | UA |
| Jan 2024 | 77 | 14 | 3 | 0 | UA |
Cancellation Rate
0.5%
11 of 2,219 flights
Diversion Rate
0.2%
4 of 2,219 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
IAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
Origin airport →LAS - Las Vegas
Full on-time, delay-cause, and seasonal performance for Las Vegas, NV.
Destination airport →Compare the two airports
See IAD and LAS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to IAD–LAS.
Routes with a similar on-time rate
What the Data Says About IAD to LAS
Bureau of Transportation Statistics records show Washington to Las Vegas (IAD to LAS) running a 83.9% on-time rate over 4,687 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 71.2 minutes. The 2,065-mile corridor is served by 5 carriers, and over the last 24 months 0.5% of 2,219 flights were cancelled, 0.2% diverted.
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 98% on-time, while Jun 2025 came in at just 66% - a 32-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.