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

Chicago, IL (ORD) to Charlotte Amalie, VI (STT) flight delay odds

68.6% of 255 official scheduled ORD-to-STT flights arrived on time; 18.8% 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 SIGNALVariable
68.6%arrived on time
18.8%30+ min late
1.2%cancelled
255scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.8%all scheduled flights
120+ minutes late2.7%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival+11.7 mincompleted flights

Which departure time was most reliable for ORD to STT?

Among qualifying ORD-to-STT departure window results, Early morning had the highest on-time rate: 69.9% of 113 flights. Late morning was lowest at 67.6% across 142 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning11369.9%22.1%1.8%
Late morning14267.6%16.2%0.7%

Which weekday was most reliable for ORD to STT?

Among qualifying ORD-to-STT weekday results, Thursday had the highest on-time rate: 80.0% of 35 flights. Friday was lowest at 46.7% across 30 flights.

DayFlightsOn time30+ minCancelled
Monday3063.3%23.3%0.0%
Thursday3580.0%14.3%0.0%
Friday3046.7%30.0%0.0%
Saturday6467.2%17.2%4.7%
Sunday4362.8%23.3%0.0%

Which airline was most reliable for ORD to STT?

Among qualifying ORD-to-STT airline results, American Airlines had the highest on-time rate: 69.0% of 100 flights. United Airlines was lowest at 68.4% across 155 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines15568.4%16.1%1.3%
American Airlines10069.0%23.0%1.0%

Which month was most reliable for ORD to STT?

Among qualifying ORD-to-STT month results, February 2026 had the highest on-time rate: 80.9% of 47 flights. March 2026 was lowest at 54.1% across 61 flights.

MonthFlightsOn time30+ minCancelled
December 20253470.6%14.7%0.0%
January 20264768.1%17.0%4.3%
February 20264780.9%12.8%0.0%
March 20266154.1%27.9%0.0%
April 20263568.6%17.1%0.0%

What drove ORD to STT delay minutes?

National airspace was the largest recorded ORD-to-STT delay category, accounting for 37.0% of 4,253 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.6%
Late aircraft22.4%
National airspace37.0%
Weather6.5%
Security1.5%
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.