BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
IAD→STT

Washington, DC (IAD) to Charlotte Amalie, VI (STT) flight delay odds

87.7% of 332 official scheduled IAD-to-STT flights arrived on time; 5.4% arrived at least 30 minutes late and 1.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
87.7%arrived on time
5.4%30+ min late
1.2%cancelled
332scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late2.4%all scheduled flights
120+ minutes late0.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival-6.7 mincompleted flights

Which departure time was most reliable for IAD to STT?

Only Early morning met the IAD-to-STT departure window threshold: 86.9% of 297 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Early morning29786.9%6.1%1.0%

Which weekday was most reliable for IAD to STT?

Among qualifying IAD-to-STT weekday results, Monday had the highest on-time rate: 91.3% of 46 flights. Sunday was lowest at 80.4% across 46 flights.

DayFlightsOn time30+ minCancelled
Monday4691.3%8.7%0.0%
Tuesday4591.1%2.2%0.0%
Wednesday4488.6%4.5%0.0%
Thursday4591.1%4.4%0.0%
Friday4588.9%4.4%0.0%
Saturday6183.6%6.6%3.3%
Sunday4680.4%6.5%4.3%

Which airline was most reliable for IAD to STT?

Only United Airlines met the IAD-to-STT airline threshold: 87.7% of 332 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
United Airlines33287.7%5.4%1.2%

Which month was most reliable for IAD to STT?

Among qualifying IAD-to-STT month results, April 2026 had the highest on-time rate: 100.0% of 30 flights. July 2025 was lowest at 77.4% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20253177.4%9.7%0.0%
August 20252080.0%5.0%5.0%
November 20253083.3%10.0%0.0%
December 20254588.9%4.4%0.0%
January 20263677.8%8.3%8.3%
February 20262896.4%0.0%0.0%
March 20263180.6%9.7%0.0%
April 202630100.0%0.0%0.0%
May 20263397.0%3.0%0.0%
June 20263497.1%2.9%0.0%

What drove IAD to STT delay minutes?

National airspace was the largest recorded IAD-to-STT delay category, accounting for 60.8% of 1,731 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.9%
Late aircraft9.8%
National airspace60.8%
Weather1.5%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.