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

Raleigh/Durham, NC (RDU) to San Juan, PR (SJU) flight delay odds

71.8% of 471 official scheduled RDU-to-SJU flights arrived on time; 17.2% arrived at least 30 minutes late and 1.7% 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
71.8%arrived on time
17.2%30+ min late
1.7%cancelled
471scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.6%all scheduled flights
120+ minutes late4.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+18.1 mincompleted flights

Which departure time was most reliable for RDU to SJU?

Among qualifying RDU-to-SJU departure window results, Afternoon had the highest on-time rate: 75.3% of 182 flights. Evening was lowest at 64.5% across 62 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning17474.1%14.9%3.4%
Afternoon18275.3%14.3%0.0%
Evening6264.5%21.0%1.6%

Which weekday was most reliable for RDU to SJU?

Among qualifying RDU-to-SJU weekday results, Wednesday had the highest on-time rate: 85.1% of 47 flights. Saturday was lowest at 55.7% across 79 flights.

DayFlightsOn time30+ minCancelled
Monday7568.0%25.3%1.3%
Tuesday5180.4%11.8%0.0%
Wednesday4785.1%6.4%0.0%
Thursday7075.7%14.3%0.0%
Friday7678.9%11.8%0.0%
Saturday7955.7%24.1%6.3%
Sunday7367.1%20.5%2.7%

Which airline was most reliable for RDU to SJU?

Among qualifying RDU-to-SJU airline results, JetBlue Airways had the highest on-time rate: 77.5% of 333 flights. Frontier Airlines was lowest at 58.7% across 121 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways33377.5%12.6%1.5%
Frontier Airlines12158.7%28.9%1.7%
Delta Air Lines1752.9%23.5%5.9%

Which month was most reliable for RDU to SJU?

Among qualifying RDU-to-SJU month results, May 2026 had the highest on-time rate: 87.2% of 39 flights. August 2025 was lowest at 61.9% across 42 flights.

MonthFlightsOn time30+ minCancelled
July 20254875.0%16.7%0.0%
August 20254261.9%28.6%2.4%
September 20251866.7%5.6%0.0%
October 20251877.8%11.1%0.0%
November 20254163.4%14.6%2.4%
December 20255166.7%25.5%0.0%
January 20264571.1%11.1%11.1%
February 20263773.0%18.9%2.7%
March 20264963.3%24.5%0.0%
April 20264082.5%12.5%0.0%
May 20263987.2%7.7%0.0%
June 20264376.7%16.3%0.0%

What drove RDU to SJU delay minutes?

Late aircraft was the largest recorded RDU-to-SJU delay category, accounting for 42.1% of 11,642 BTS-attributed delay minutes during July 2025–June 2026.

Airline42.0%
Late aircraft42.1%
National airspace15.5%
Weather0.0%
Security0.4%
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.