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

San Juan, PR (SJU) to New York, NY (JFK) flight delay odds

Historically, 77.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,657 flights.

HISTORICAL ROUTE SIGNALVariable
77.0%arrived on time
13.6%30+ min late
2.7%cancelled
3,657scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.0%all scheduled flights
120+ minutes late3.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+5.9 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 morning1,06784.7%7.4%2.2%
Late morning33973.7%15.9%2.9%
Afternoon96675.8%14.0%2.7%
Evening88673.6%17.7%2.9%
Night39969.4%17.8%3.3%

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
Monday52974.3%14.9%4.0%
Tuesday52277.0%14.0%2.3%
Wednesday50380.5%10.3%0.8%
Thursday52677.9%14.1%1.0%
Friday52781.2%11.0%1.5%
Saturday51676.2%14.1%4.5%
Sunday53471.9%16.3%4.7%

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
JetBlue Airways2,23772.4%17.0%3.2%
Delta Air Lines1,10487.0%6.4%1.9%
Frontier Airlines31674.4%13.9%1.6%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202537168.7%17.3%3.8%
August 202535973.0%20.3%0.3%
September 202524883.9%8.1%0.0%
October 202526981.8%9.7%0.7%
November 202529779.8%12.5%1.0%
December 202535174.4%13.7%4.8%
January 202631066.8%16.1%9.4%
February 202629465.3%19.4%8.5%
March 202630582.3%13.1%0.7%
April 202631083.9%10.3%0.0%
May 202625487.8%6.7%0.4%
June 202628982.7%11.1%1.4%

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.

Airline38.8%
Late aircraft45.9%
National airspace13.6%
Weather1.6%
Security0.1%
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.