Boston (BOS) to Key West (EYW): On-Time Performance
Data through May 2026
Boston (BOS) to Key West (EYW) is a thinner route than most in this dataset — 221 departures over the past year, roughly 4 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 72% arrived on time, noticeably below the national average of 78%.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 0.61
- last 12 months
- Duration
- 3h 55m
- scheduled
- Distance
- 1,373 mi
Best airline from BOS to EYW
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue Airwaysmost reliable | 75% | 16 min | 1.7% | 349 |
| Republic Airways | 56% | 33 min | 1.6% | 64 |
Monthly on-time trend
Best time to fly from BOS to EYW
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 17 min |
| Tuesdaybest | 80% | 16 min |
| Wednesday | 77% | 11 min |
| Thursday | 77% | 15 min |
| Friday | 69% | 19 min |
| Saturday | 67% | 26 min |
| Sunday | 70% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft14%
- Airline operations23%
- National airspace system57%
- Weather6%
Frequently asked questions
- How often are flights from BOS to EYW delayed?
- 28% of BOS–EYW flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from BOS to EYW?
- JetBlue Airways has the best on-time record on this route at 75%, based on 349 flights. 2 airlines flew BOS–EYW frequently enough to compare in this period.
- How long is the flight from BOS to EYW?
- The scheduled BOS–EYW flight time averages 3h 55m over 1,373 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are BOS to EYW flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from BOS to EYW?
- December 2024 was the roughest month in this dataset, with only 49% of arrivals on time. The best was April 2025 at 90%. If your dates are flexible, that 42-point gap is worth planning around.
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Based on 421 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.