Fort Lauderdale to Boston

What the Data Says About FLL to BOS

The Fort Lauderdale to Boston corridor (FLL → BOS) covers roughly 1,237 miles and is served by 20 carriers, based on Bureau of Transportation Statistics reporting. Across 18,044 flights in the dataset, this route posts a 73% on-time rate with an average delay of 79.2 minutes when flights run late. Over the most recent 24 months of BTS data, 6,634 flights were recorded on this pairing — 104 cancelled (1.6%) and 9 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 20 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 18,044 total flights analyzed, the 73% on-time figure is statistically meaningful rather than a small-sample fluke. The 79.2-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Nov 2024 posted the best performance on this corridor at 86% on-time, while Jul 2025 came in at 56% on-time — a 30-point gap between best and worst recent month. For travelers evaluating the FLL to BOS route, the combination of a 73% on-time rate, 79.2-minute average delay, 1.6% recent cancellation rate, and 20 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.