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

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

64.3% of 3,406 official scheduled FLL-to-BOS flights arrived on time; 23.4% arrived at least 30 minutes late and 3.3% 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
64.3%arrived on time
23.4%30+ min late
3.3%cancelled
3,406scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late14.9%all scheduled flights
120+ minutes late5.8%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+19.8 mincompleted flights

Which departure time was most reliable for FLL to BOS?

Among qualifying FLL-to-BOS departure window results, Early morning had the highest on-time rate: 84.4% of 778 flights. Night was lowest at 34.6% across 78 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning77884.4%6.7%2.2%
Late morning54469.3%18.6%2.0%
Afternoon78052.9%33.1%4.5%
Evening1,22658.5%28.5%3.2%
Night7834.6%47.4%11.5%

Which weekday was most reliable for FLL to BOS?

Among qualifying FLL-to-BOS weekday results, Wednesday had the highest on-time rate: 73.1% of 457 flights. Sunday was lowest at 55.5% across 503 flights.

DayFlightsOn time30+ minCancelled
Monday50257.2%25.5%6.8%
Tuesday46767.5%21.8%1.9%
Wednesday45773.1%17.5%0.9%
Thursday48967.1%24.3%1.4%
Friday50662.5%25.7%2.0%
Saturday48268.9%19.7%3.7%
Sunday50355.5%28.6%5.8%

Which airline was most reliable for FLL to BOS?

Among qualifying FLL-to-BOS airline results, Delta Air Lines had the highest on-time rate: 69.6% of 884 flights. Spirit Airlines was lowest at 58.8% across 570 flights.

AirlineFlightsOn time30+ minCancelled
JetBlue Airways1,95263.6%23.8%2.9%
Delta Air Lines88469.6%20.1%3.1%
Spirit Airlines57058.8%27.2%4.7%

Which month was most reliable for FLL to BOS?

Among qualifying FLL-to-BOS month results, May 2026 had the highest on-time rate: 81.6% of 206 flights. July 2025 was lowest at 52.0% across 246 flights.

MonthFlightsOn time30+ minCancelled
July 202524652.0%37.4%4.1%
August 202524069.6%20.4%0.0%
September 202523268.1%23.7%1.7%
October 202524966.7%24.5%0.4%
November 202529673.0%14.2%5.4%
December 202536060.0%25.0%2.8%
January 202630463.8%22.0%6.9%
February 202634255.3%24.9%9.4%
March 202638758.9%27.9%3.6%
April 202636765.7%22.3%0.5%
May 202620681.6%11.2%0.0%
June 202617767.8%24.9%0.6%

What drove FLL to BOS delay minutes?

Late aircraft was the largest recorded FLL-to-BOS delay category, accounting for 36.9% of 86,010 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.1%
Late aircraft36.9%
National airspace30.8%
Weather2.9%
Security0.4%
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.