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

San Juan, PR (SJU) to Charlotte Amalie, VI (STT) flight delay odds

Historically, 69.9% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 365 flights.

HISTORICAL ROUTE SIGNALVariable
69.9%arrived on time
19.7%30+ min late
0.5%cancelled
365scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.2%all scheduled flights
120+ minutes late5.2%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+18.1 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Late morning5383.0%11.3%0.0%
Afternoon31267.6%21.2%0.6%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday5961.0%32.2%0.0%
Tuesday4673.9%10.9%0.0%
Wednesday4479.5%18.2%0.0%
Thursday5267.3%26.9%0.0%
Friday6078.3%10.0%0.0%
Saturday5263.5%19.2%3.8%
Sunday5267.3%19.2%0.0%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways35170.9%18.5%0.6%
Frontier Airlines1442.9%50.0%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 20253969.2%28.2%0.0%
August 20253759.5%21.6%2.7%
September 20252254.5%27.3%0.0%
October 20252483.3%16.7%0.0%
November 20253180.6%16.1%0.0%
December 20253167.7%25.8%0.0%
January 20263158.1%29.0%3.2%
February 20262853.6%32.1%0.0%
March 20263174.2%12.9%0.0%
April 20263080.0%10.0%0.0%
May 20263193.5%3.2%0.0%
June 20263063.3%13.3%0.0%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline37.4%
Late aircraft52.9%
National airspace6.8%
Weather2.9%
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.