IAD → STTWashington to Charlotte Amalie

live

Direct flights from Washington (IAD) to Charlotte Amalie (STT): 2 nonstop departures observed each week across 1 airline. The median arrival is 18 minutes early. 1 of the 2 tracked flights was cancelled. The nonstop covers 2,589 km, an estimated 3 hours 49 minutes in the air. Measured by Pro Flight Search from live flight boards at Washington and Charlotte Amalie. Updated 10 September 2026 at 02:18 UTC.

IAD Washington busy · +22
STT Charlotte Amalie busy · +25
2,589 km · ~3h 49m est.
departs 09:002x weekly
Under pressure · 1 airline · 2x weekly · nonstop
68 / 100

route health from live IAD and STT delay boards

Median arrival delay is −18 min. 1 of 2 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−18 minacross the last 2 operated legs
Flight time~3h 49mestimated from route distance
Weekly departures2x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
United AirlinesUA

Flights UA1443 09:00 We Sa

History

operated legs · board outcomes
09-08UA1443cancelledCNX
09-05UA1443dep +15 → arr−18

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
IADWashington +22 min busy 🌤 clear · SSW 11 kt Full IAD delay board →
STTCharlotte Amalie +25 min busy 🌤 clear · E 10 kt Full STT delay board →

Weather lens

Current conditions put the pressure at STT: 38% odds of a 15+ minute delay and around +22 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the Washington to Charlotte Amalie route actually runs

Pro Flight Search records official board updates for nonstop IAD to STT flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — Washington (IAD) to Charlotte Amalie (STT) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/IAD-STT
How we measure this →

IAD to STT questions

Is IAD–STT running on time right now?

Mostly on schedule. The arrival side at STT is the weaker end, route health score 68/100. The airports section above carries the live status and delay window at both ends.

How long is the flight from IAD to STT?

Great-circle distance is 2,589 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 213–252 min gate-to-gate on this route.

How often does IAD–STT fly?

United Airlines runs the route with about 2 flights a week (wed, sat). Since one carrier owns the route, a single disruption tends to ripple through the day.

What does the route health score measure?

A blend of departure-side delay at IAD and arrival-side delay at STT, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.