Boston to Key West
Boston, MA → Key West, FL
Total Flights
667
On-Time Rate
79%
Avg Delay
68.2 min
Distance
1,373 mi
Carriers
4
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 39 | 14 | 0 | 0 | YX,B6 |
| Apr 2025 | 30 | 3 | 0 | 0 | YX,B6 |
| Mar 2025 | 36 | 5 | 0 | 1 | B6,YX |
| Feb 2025 | 32 | 13 | 2 | 0 | B6,YX |
| Jan 2025 | 30 | 11 | 0 | 0 | B6,YX |
| Dec 2024 | 34 | 17 | 1 | 0 | B6,YX |
| Apr 2024 | 30 | 5 | 1 | 0 | B6 |
| Mar 2024 | 31 | 7 | 0 | 2 | B6 |
| Feb 2024 | 31 | 8 | 1 | 2 | B6,YX |
| Jan 2024 | 32 | 10 | 0 | 0 | B6,MQ |
| Apr 2023 | 30 | 7 | 0 | 0 | B6 |
| Mar 2023 | 31 | 4 | 0 | 0 | B6 |
| Apr 2022 | 30 | 8 | 5 | 1 | B6 |
| Mar 2022 | 31 | 8 | 0 | 0 | B6 |
| Oct 2021 | 31 | 2 | 0 | 0 | B6 |
| Sep 2021 | 30 | 4 | 1 | 0 | B6 |
| Aug 2021 | 31 | 0 | 0 | 0 | B6 |
| Jul 2021 | 31 | 5 | 1 | 0 | B6 |
| Jun 2021 | 30 | 1 | 0 | 0 | B6 |
| Apr 2021 | 34 | 4 | 1 | 0 | B6 |
| Mar 2021 | 33 | 4 | 0 | 0 | YX,B6 |
Cancellation Rate
1.9%
13 of 667 flights
Diversion Rate
0.9%
6 of 667 flights
Explore Origin & Destination
Learn more about the cities connected by this route.
What the Data Says About BOS to EYW
The Boston to Key West corridor (BOS → EYW) covers roughly 1,373 miles and is served by 4 carriers, based on Bureau of Transportation Statistics reporting. Across 667 flights in the dataset, this route posts a 79% on-time rate with an average delay of 68.2 minutes when flights run late. Over the most recent 24 months of BTS data, 667 flights were recorded on this pairing — 13 cancelled (1.9%) and 6 diverted (0.9%). Those baseline metrics tell you what to expect before you book.
Having 4 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 667 total flights analyzed, the 79% on-time figure is statistically meaningful rather than a small-sample fluke. The 68.2-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).
Monthly performance varies, so review the monthly table above to see specific periods. For travelers evaluating the BOS to EYW route, the combination of a 79% on-time rate, 68.2-minute average delay, 1.9% recent cancellation rate, and 4 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.
Frequently Asked Questions
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Flight Guides
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Explore PlainFlights
Read our methodology — how this data is sourced, computed, and verified.