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

Philadelphia, PA (PHL) to San Juan, PR (SJU) flight delay odds

Historically, 60.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,879 flights.

HISTORICAL ROUTE SIGNALVariable
60.8%arrived on time
25.4%30+ min late
3.2%cancelled
1,879scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late14.4%all scheduled flights
120+ minutes late5.5%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+24.7 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
Early morning43267.6%18.3%2.8%
Late morning35971.3%18.9%1.4%
Afternoon24759.5%25.1%1.2%
Evening77951.1%33.8%4.9%
Night6280.6%8.1%3.2%

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
Monday28056.8%30.4%5.0%
Tuesday23069.6%18.7%0.9%
Wednesday23268.1%22.0%0.4%
Thursday28161.2%24.6%1.8%
Friday29262.0%26.7%2.7%
Saturday27657.2%24.3%4.0%
Sunday28853.8%29.2%6.6%

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
Frontier Airlines86555.8%28.9%3.4%
American Airlines70166.5%21.5%2.0%
Spirit Airlines21655.1%28.7%7.9%
JetBlue Airways9777.3%14.4%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202513241.7%42.4%4.5%
August 202512650.8%32.5%2.4%
September 20256459.4%17.2%0.0%
October 20259562.1%25.3%0.0%
November 202512670.6%18.3%1.6%
December 202516352.8%35.6%2.5%
January 202619250.5%26.6%10.4%
February 202617656.2%26.1%6.2%
March 202620356.7%32.5%3.0%
April 202622471.9%17.0%2.7%
May 202619876.8%14.1%0.5%
June 202618071.1%19.4%0.6%

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.

Airline40.8%
Late aircraft30.5%
National airspace23.7%
Weather4.9%
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.