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

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

80.1% of 332 official scheduled STT-to-IAD flights arrived on time; 11.1% arrived at least 30 minutes late and 1.8% 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 SIGNALGenerally reliable
80.1%arrived on time
11.1%30+ min late
1.8%cancelled
332scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.6%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted1.5%did not reach as scheduled
Average arrival-2.0 mincompleted flights

Which departure time was most reliable for STT to IAD?

Only Afternoon met the STT-to-IAD departure window threshold: 80.1% of 312 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Afternoon31280.1%10.9%1.6%

Which weekday was most reliable for STT to IAD?

Among qualifying STT-to-IAD weekday results, Thursday had the highest on-time rate: 86.7% of 45 flights. Sunday was lowest at 67.4% across 46 flights.

DayFlightsOn time30+ minCancelled
Monday4684.8%10.9%0.0%
Tuesday4582.2%8.9%0.0%
Wednesday4472.7%13.6%0.0%
Thursday4586.7%8.9%0.0%
Friday4586.7%8.9%0.0%
Saturday6180.3%9.8%4.9%
Sunday4667.4%17.4%6.5%

Which airline was most reliable for STT to IAD?

Only United Airlines met the STT-to-IAD airline threshold: 80.1% of 332 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
United Airlines33280.1%11.1%1.8%

Which month was most reliable for STT to IAD?

Among qualifying STT-to-IAD month results, November 2025 had the highest on-time rate: 90.0% of 30 flights. August 2025 was lowest at 65.0% across 20 flights.

MonthFlightsOn time30+ minCancelled
July 20253180.6%9.7%0.0%
August 20252065.0%5.0%10.0%
November 20253090.0%10.0%0.0%
December 20254588.9%8.9%0.0%
January 20263666.7%19.4%11.1%
February 20262875.0%17.9%0.0%
March 20263177.4%16.1%0.0%
April 20263083.3%10.0%0.0%
May 20263381.8%12.1%0.0%
June 20263482.4%5.9%0.0%

What drove STT to IAD delay minutes?

Late aircraft was the largest recorded STT-to-IAD delay category, accounting for 57.4% of 3,773 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.2%
Late aircraft57.4%
National airspace18.4%
Weather0.0%
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.