Route · STT → IAD · 2020–2025 BTS data
Charlotte Amalie to Washington
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), STT to IAD (Charlotte Amalie to Washington) ranks #4432 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 85%
- On-time
- +6 pts
- vs US avg
- 68 min
- Delay when late
- 1,097
- Flights
- #4432 of 4927
- Corpus placement
Cancelled
0.9%
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 | 3 | 0 | 0 | UA |
| Jul 2025 | 31 | 4 | 0 | 2 | UA |
| Jun 2025 | 30 | 4 | 0 | 0 | UA |
| May 2025 | 31 | 8 | 1 | 0 | UA |
| Apr 2025 | 30 | 3 | 0 | 0 | UA |
| Mar 2025 | 31 | 6 | 0 | 0 | UA |
| Jan 2025 | 31 | 5 | 0 | 0 | UA |
| Dec 2024 | 31 | 2 | 0 | 0 | UA |
| Nov 2024 | 30 | 1 | 1 | 0 | UA |
| Jul 2024 | 35 | 8 | 0 | 0 | UA |
| Jun 2024 | 35 | 10 | 0 | 0 | UA |
| May 2024 | 32 | 6 | 1 | 2 | UA |
| Apr 2024 | 30 | 10 | 1 | 0 | UA |
| Mar 2024 | 31 | 8 | 0 | 0 | UA |
| Jan 2024 | 31 | 4 | 0 | 0 | UA |
| Dec 2023 | 31 | 4 | 0 | 0 | UA |
| Nov 2023 | 30 | 3 | 0 | 0 | UA |
| Jul 2023 | 31 | 6 | 0 | 0 | UA |
| Apr 2023 | 30 | 6 | 1 | 0 | UA |
| Mar 2023 | 31 | 6 | 0 | 0 | UA |
| Jan 2023 | 31 | 5 | 0 | 0 | UA |
| Dec 2022 | 31 | 4 | 2 | 0 | UA |
| Nov 2022 | 30 | 1 | 0 | 0 | UA |
STT–IAD seasonal on-time pattern
Best: November (93.3%) · weakest: May (77.8%)
Strongest calendar month
November
93.3% on-time · ~30 flights/mo
Busiest calendar month
December
~34 flights/mo avg
Weakest calendar month
May
77.8% on-time · ~32 flights/mo
Cancellation Rate
0.9%
7 of 759 flights
Diversion Rate
0.5%
4 of 759 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
STT - Charlotte Amalie
Full on-time, delay-cause, and seasonal performance for Charlotte Amalie, VI.
STT on-time profileIAD - Washington
Full on-time, delay-cause, and seasonal performance for Washington, DC.
IAD on-time profileCompare the two airports
See STT and IAD side by side on delays, cancellations, and reliability.
Compare STT vs IADOrigin-hub reliability standing
Among STT's stronger departures
STT → IAD posts a 85% on-time rate, landing in the ≥85% band with 1 of 9 BTS-tracked routes leaving Charlotte Amalie. The same hub also shows 6 mid-band and 2 challenged departures · fleet-wide on-time rank #1241 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to STT–IAD.
Routes with a similar on-time rate
What the Data Says About STT to IAD
Charlotte Amalie to Washington (STT to IAD) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 85% on-time rate across 1,097 flights, with delays that do happen averaging 67.7 minutes. The corridor runs roughly 1,606 miles and is served by 1 carrier. Over the most recent 24 months, 7 of 759 flights were cancelled (0.9%) and 4 diverted (0.5%).
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.
On the multi-year calendar, STT–IAD peaks in November at 93.3% on-time while December carries the heaviest traffic (~34 flights per month) ; the softest month is May at 77.8%, a 15.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does STT to IAD rank among US routes by traffic? ▼
How often are flights delayed from STT to IAD? ▼
What is the cancellation rate for STT to IAD? ▼
How far is the flight from STT to IAD? ▼
Airports on this route
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.
Using STT–IAD data
STT–IAD runs 6 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare STT and IAD airport profiles: delay causes and top routes differ even on the same corridor. STT airport
- If your dates flex, November (93.3% on-time) beats May (77.8%) on this corridor. Seasonal chart
- 4 other routes post a similar 85% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
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.