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

San Juan, PR (SJU) to Hartford, CT (BDL) flight delay odds

Historically, 69.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 961 flights.

HISTORICAL ROUTE SIGNALVariable
69.4%arrived on time
18.4%30+ min late
1.9%cancelled
961scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.9%all scheduled flights
120+ minutes late3.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+14.2 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 morning43275.0%12.5%2.5%
Afternoon30260.9%27.8%1.3%
Evening16867.3%19.6%1.8%
Night5076.0%12.0%0.0%

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
Monday14167.4%22.0%5.0%
Tuesday12970.5%16.3%0.8%
Wednesday12576.8%10.4%0.0%
Thursday14069.3%20.0%0.7%
Friday13970.5%12.2%0.7%
Saturday14265.5%22.5%3.5%
Sunday14566.9%24.1%2.1%

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 Airways72667.8%19.8%1.9%
Frontier Airlines23574.5%14.0%1.7%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20258865.9%26.1%2.3%
August 20259164.8%20.9%0.0%
September 20255461.1%20.4%0.0%
October 20255350.9%32.1%0.0%
November 20256473.4%21.9%0.0%
December 20259676.0%13.5%3.1%
January 20268661.6%20.9%9.3%
February 20267356.2%28.8%5.5%
March 20268369.9%16.9%1.2%
April 20269071.1%15.6%0.0%
May 20269387.1%3.2%0.0%
June 20269081.1%11.1%0.0%

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.

Airline40.7%
Late aircraft36.8%
National airspace21.5%
Weather1.0%
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.