Route · IAD → STT · 2020–2025 BTS data
Washington to Charlotte Amalie
The IAD–STT corridor (Washington, DC → Charlotte Amalie, VI) runs ahead of the national average, served by 1 carrier across roughly 1,606 miles.
Data updated 2026-06-13
- 87.4%
- On-time
- +8.4 pts
- vs US avg
- 56 min
- Delay when late
- 1,158
- Flights
Cancelled
0.3%
Best Month
N/A
Worst Month
N/A
Distance
1,606 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 45 | 5 | 0 | 0 | UA |
| Nov 2025 | 30 | 5 | 0 | 0 | UA |
| Jul 2025 | 31 | 7 | 0 | 0 | UA |
| Jun 2025 | 30 | 3 | 0 | 0 | UA |
| May 2025 | 31 | 6 | 0 | 0 | UA |
| Apr 2025 | 30 | 2 | 0 | 0 | UA |
| Mar 2025 | 31 | 3 | 0 | 0 | UA |
| Jan 2025 | 31 | 5 | 0 | 0 | UA |
| Dec 2024 | 31 | 5 | 0 | 0 | UA |
| Nov 2024 | 30 | 1 | 0 | 1 | UA |
| Jul 2024 | 35 | 8 | 0 | 0 | UA |
| Jun 2024 | 35 | 3 | 0 | 0 | UA |
| May 2024 | 32 | 5 | 0 | 1 | UA |
| Apr 2024 | 30 | 0 | 0 | 0 | UA |
| Mar 2024 | 31 | 2 | 0 | 0 | UA |
| Jan 2024 | 31 | 7 | 0 | 0 | UA |
| Dec 2023 | 31 | 2 | 0 | 0 | UA |
| Nov 2023 | 30 | 0 | 0 | 0 | UA |
| Jul 2023 | 31 | 5 | 1 | 0 | UA |
| Apr 2023 | 30 | 2 | 0 | 0 | UA |
| Mar 2023 | 31 | 1 | 0 | 0 | UA |
| Jan 2023 | 31 | 3 | 1 | 0 | UA |
| Dec 2022 | 31 | 5 | 0 | 0 | UA |
| Nov 2022 | 30 | 1 | 0 | 0 | UA |
Cancellation Rate
0.3%
2 of 759 flights
Diversion Rate
0.3%
2 of 759 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 →STT - Charlotte Amalie
Full on-time, delay-cause, and seasonal performance for Charlotte Amalie, VI.
Destination airport →Compare the two airports
See IAD and STT 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–STT.
Routes with a similar on-time rate
What the Data Says About IAD to STT
Washington to Charlotte Amalie (IAD to STT) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 87.4% on-time rate across 1,158 flights, with delays that do happen averaging 55.7 minutes. The corridor runs roughly 1,606 miles and is served by 1 carrier. Over the most recent 24 months, 2 of 759 flights were cancelled (0.3%) and 2 diverted (0.3%).
Monthly performance data for this route did not show a clear best/worst split in the sample window; review the monthly table above for period-by-period detail.
Frequently Asked Questions
How often are flights delayed from IAD to STT? ▼
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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.