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

Jacksonville, FL (JAX) to Boston, MA (BOS) flight delay odds

Historically, 72.7% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,609 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
72.7%arrived on time
18.5%30+ min late
2.3%cancelled
1,609scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.3%all scheduled flights
120+ minutes late4.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+11.9 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 morning40088.5%5.0%2.0%
Late morning29279.8%13.0%2.1%
Afternoon43464.7%26.0%1.8%
Evening46462.5%25.9%2.8%

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
Monday24565.7%22.0%5.3%
Tuesday23077.4%17.0%1.7%
Wednesday22276.6%15.8%0.9%
Thursday23569.8%18.3%1.7%
Friday23671.2%21.6%0.8%
Saturday19684.2%10.2%1.0%
Sunday24566.5%22.4%4.1%

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
Republic Airways89576.5%14.9%1.7%
JetBlue Airways65866.6%23.9%3.0%
Delta Air Lines5682.1%12.5%3.6%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202514662.3%22.6%5.5%
August 202513482.1%11.9%1.5%
September 202512552.8%37.6%1.6%
October 202514456.9%33.3%2.1%
November 202512472.6%18.5%1.6%
December 202514374.1%16.1%2.1%
January 20269670.8%19.8%5.2%
February 202610166.3%16.8%8.9%
March 202614473.6%16.7%1.4%
April 202615083.3%8.7%0.0%
May 202616188.2%8.7%0.0%
June 202614182.3%14.2%0.7%

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.

Airline31.3%
Late aircraft35.7%
National airspace32.0%
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.