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

Boston, MA (BOS) to Fort Lauderdale, FL (FLL) flight delay odds

64.1% of 3,417 official scheduled BOS-to-FLL flights arrived on time; 22.6% arrived at least 30 minutes late and 3.5% 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 SIGNALVariable
64.1%arrived on time
22.6%30+ min late
3.5%cancelled
3,417scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late13.2%all scheduled flights
120+ minutes late5.0%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+16.8 mincompleted flights

Which departure time was most reliable for BOS to FLL?

Among qualifying BOS-to-FLL departure window results, Early morning had the highest on-time rate: 77.0% of 1,254 flights. Night was lowest at 45.8% across 59 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,25477.0%11.0%3.7%
Late morning36865.5%19.6%3.3%
Afternoon84859.6%27.2%2.9%
Evening88851.1%34.1%3.8%
Night5945.8%45.8%0.0%

Which weekday was most reliable for BOS to FLL?

Among qualifying BOS-to-FLL weekday results, Wednesday had the highest on-time rate: 74.9% of 458 flights. Sunday was lowest at 54.5% across 506 flights.

DayFlightsOn time30+ minCancelled
Monday50361.6%22.5%7.0%
Tuesday47068.9%18.9%4.5%
Wednesday45874.9%14.0%2.0%
Thursday49065.3%22.7%1.0%
Friday50762.5%25.2%2.0%
Saturday48362.5%25.5%2.5%
Sunday50654.5%28.3%5.1%

Which airline was most reliable for BOS to FLL?

Among qualifying BOS-to-FLL airline results, Delta Air Lines had the highest on-time rate: 67.0% of 885 flights. Spirit Airlines was lowest at 61.3% across 571 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways1,96163.7%23.3%3.2%
Delta Air Lines88567.0%20.1%3.1%
Spirit Airlines57161.3%24.0%5.1%

Which month was most reliable for BOS to FLL?

Among qualifying BOS-to-FLL month results, October 2025 had the highest on-time rate: 76.0% of 250 flights. December 2025 was lowest at 51.9% across 366 flights.

MonthFlightsOn time30+ minCancelled
July 202524761.9%27.5%4.5%
August 202524074.6%17.9%0.0%
September 202523263.4%24.6%2.2%
October 202525076.0%16.4%1.2%
November 202529467.7%18.7%5.4%
December 202536651.9%33.3%2.2%
January 202630353.8%27.1%5.3%
February 202634352.8%27.1%10.8%
March 202639064.4%20.0%4.6%
April 202636768.1%22.3%0.3%
May 202620674.8%11.7%0.0%
June 202617975.4%14.5%1.7%

What drove BOS to FLL delay minutes?

Late aircraft was the largest recorded BOS-to-FLL delay category, accounting for 36.5% of 79,945 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.4%
Late aircraft36.5%
National airspace32.7%
Weather2.4%
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.