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

Washington, DC (DCA) to San Juan, PR (SJU) flight delay odds

73.4% of 365 official scheduled DCA-to-SJU flights arrived on time; 18.4% arrived at least 30 minutes late and 1.1% 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
73.4%arrived on time
18.4%30+ min late
1.1%cancelled
365scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.8%all scheduled flights
120+ minutes late4.9%all scheduled flights
Diverted0.8%did not reach as scheduled
Average arrival+9.7 mincompleted flights

Which departure time was most reliable for DCA to SJU?

Only Early morning met the DCA-to-SJU departure window threshold: 73.4% of 365 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Early morning36573.4%18.4%1.1%

Which weekday was most reliable for DCA to SJU?

Among qualifying DCA-to-SJU weekday results, Wednesday had the highest on-time rate: 82.7% of 52 flights. Friday was lowest at 65.4% across 52 flights.

DayFlightsOn time30+ minCancelled
Monday5276.9%15.4%1.9%
Tuesday5375.5%22.6%0.0%
Wednesday5282.7%15.4%0.0%
Thursday5269.2%13.5%0.0%
Friday5265.4%32.7%0.0%
Saturday5275.0%17.3%3.8%
Sunday5269.2%11.5%1.9%

Which airline was most reliable for DCA to SJU?

Only JetBlue Airways met the DCA-to-SJU airline threshold: 73.4% of 365 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways36573.4%18.4%1.1%

Which month was most reliable for DCA to SJU?

Among qualifying DCA-to-SJU month results, November 2025 had the highest on-time rate: 83.3% of 30 flights. June 2026 was lowest at 56.7% across 30 flights.

MonthFlightsOn time30+ minCancelled
July 20253180.6%19.4%0.0%
August 20253180.6%12.9%0.0%
September 20253073.3%26.7%0.0%
October 20253164.5%19.4%0.0%
November 20253083.3%6.7%0.0%
December 20253174.2%19.4%0.0%
January 20263158.1%19.4%12.9%
February 20262871.4%25.0%0.0%
March 20263174.2%19.4%0.0%
April 20263083.3%10.0%0.0%
May 20263180.6%16.1%0.0%
June 20263056.7%26.7%0.0%

What drove DCA to SJU delay minutes?

National airspace was the largest recorded DCA-to-SJU delay category, accounting for 40.2% of 6,879 BTS-attributed delay minutes during July 2025–June 2026.

Airline33.3%
Late aircraft10.4%
National airspace40.2%
Weather16.1%
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.