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

Christiansted, VI (STX) to San Juan, PR (SJU) flight delay odds

75.2% of 326 official scheduled STX-to-SJU flights arrived on time; 16.3% arrived at least 30 minutes late and 0.9% 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
75.2%arrived on time
16.3%30+ min late
0.9%cancelled
326scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.1%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+7.4 mincompleted flights

Which departure time was most reliable for STX to SJU?

Only Afternoon met the STX-to-SJU departure window threshold: 78.1% of 301 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Afternoon30178.1%14.0%1.0%

Which weekday was most reliable for STX to SJU?

Among qualifying STX-to-SJU weekday results, Wednesday had the highest on-time rate: 86.4% of 44 flights. Saturday was lowest at 61.4% across 44 flights.

DayFlightsOn time30+ minCancelled
Monday4580.0%13.3%2.2%
Tuesday4678.3%10.9%0.0%
Wednesday4486.4%9.1%0.0%
Thursday5174.5%15.7%0.0%
Friday4481.8%11.4%0.0%
Saturday4461.4%22.7%4.5%
Sunday5265.4%28.8%0.0%

Which airline was most reliable for STX to SJU?

Only JetBlue Airways met the STX-to-SJU airline threshold: 77.2% of 312 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways31277.2%14.7%1.0%
Frontier Airlines1428.6%50.0%0.0%

Which month was most reliable for STX to SJU?

Among qualifying STX-to-SJU month results, June 2026 had the highest on-time rate: 90.0% of 30 flights. January 2026 was lowest at 64.5% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20254067.5%20.0%0.0%
August 20253672.2%13.9%2.8%
November 20253073.3%20.0%0.0%
December 20253167.7%22.6%0.0%
January 20263164.5%29.0%3.2%
February 20262878.6%7.1%3.6%
March 20263180.6%12.9%0.0%
April 20263076.7%13.3%0.0%
May 20263183.9%12.9%0.0%
June 20263090.0%6.7%0.0%

What drove STX to SJU delay minutes?

Late aircraft was the largest recorded STX-to-SJU delay category, accounting for 71.2% of 4,199 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.5%
Late aircraft71.2%
National airspace7.4%
Weather0.0%
Security1.0%
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.