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

San Juan, PR (SJU) to Atlanta, GA (ATL) flight delay odds

80.4% of 2,126 official scheduled SJU-to-ATL flights arrived on time; 11.9% arrived at least 30 minutes late and 1.4% 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 SIGNALLower disruption
80.4%arrived on time
11.9%30+ min late
1.4%cancelled
2,126scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.2%all scheduled flights
120+ minutes late3.1%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival+4.4 mincompleted flights

Which departure time was most reliable for SJU to ATL?

Among qualifying SJU-to-ATL departure window results, Early morning had the highest on-time rate: 89.6% of 617 flights. Afternoon was lowest at 75.6% across 1,045 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning61789.6%5.2%1.5%
Afternoon1,04575.6%15.1%1.4%
Evening44379.7%13.1%1.1%

Which weekday was most reliable for SJU to ATL?

Among qualifying SJU-to-ATL weekday results, Wednesday had the highest on-time rate: 88.2% of 263 flights. Sunday was lowest at 75.1% across 317 flights.

DayFlightsOn time30+ minCancelled
Monday30575.1%14.8%1.6%
Tuesday27282.7%10.7%0.4%
Wednesday26388.2%8.0%0.4%
Thursday30680.7%12.4%0.3%
Friday32384.2%9.6%0.0%
Saturday34078.2%11.2%4.7%
Sunday31775.1%15.8%1.6%

Which airline was most reliable for SJU to ATL?

Among qualifying SJU-to-ATL airline results, Delta Air Lines had the highest on-time rate: 89.4% of 1,637 flights. Spirit Airlines was lowest at 35.5% across 124 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,63789.4%5.6%0.9%
Frontier Airlines36555.1%29.0%2.2%
Spirit Airlines12435.5%43.5%4.8%

Which month was most reliable for SJU to ATL?

Among qualifying SJU-to-ATL month results, June 2026 had the highest on-time rate: 87.4% of 175 flights. March 2026 was lowest at 70.7% across 229 flights.

MonthFlightsOn time30+ minCancelled
July 202520785.0%7.7%1.0%
August 202515678.2%12.2%0.6%
September 202512886.7%5.5%0.0%
October 202513382.0%12.8%0.0%
November 202514885.8%9.5%1.4%
December 202519281.8%10.9%3.6%
January 202619573.3%17.9%4.6%
February 202617779.7%16.9%0.0%
March 202622970.7%16.2%3.1%
April 202620174.1%14.9%0.0%
May 202618585.9%5.9%0.5%
June 202617587.4%8.6%0.0%

What drove SJU to ATL delay minutes?

Late aircraft was the largest recorded SJU-to-ATL delay category, accounting for 43.0% of 30,603 BTS-attributed delay minutes during July 2025–June 2026.

Airline37.1%
Late aircraft43.0%
National airspace19.3%
Weather0.5%
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.