BOS to EYW flight delays & on-time performance
Nonstop flights from Boston Logan International Airport to Key West International Airport · 1,373 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOS or EYW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boston (BOS) to Key West (EYW) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.8% were cancelled, and 11% arrived an hour or more late.
- JetBlue was the most punctual airline here (76% on time); Republic Airways was the least (57%).
- Departures scheduled around 8am did best (76% on time); around 10am did worst (56%).
- Wednesday was the most reliable day to fly (86% on time) and Sunday the least (65%).
- The largest source of delay minutes was air traffic control & airport congestion (55%).
Which airline is most on time from BOS to EYW?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| JetBlue | 76% | 2.2% | 18 min | 8.5% | 183 |
| Envoy AirRegional airline operating American Eagle flights. | 75% | 0.0% | 10 min | 0.0% | 8 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 57% | 0.0% | 34 min | 26.7% | 30 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am76%190 flights
- 10am56%27 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday76%9.4% cancelled
- Tuesday71%4.5% cancelled
- Wednesday86%0.0% cancelled
- Thursday76%0.0% cancelled
- Friday73%0.0% cancelled
- Saturday70%0.0% cancelled
- Sunday65%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion55%
- Airline (crew, maintenance, cleaning, fueling)22%
- Late-arriving aircraft11%
- Extreme weather11%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather75%
- Air traffic control & airport congestion25%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
BOS to EYW: common questions
- How often are BOS to EYW flights on time?
- 73% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Boston to Key West cancelled?
- 1.8% of scheduled flights were cancelled (4 of 221).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 69 min behind schedule on average, and 10.7% of flights were an hour or more late.
- How long is taxi time at BOS?
- Flights on this route spent 27 min taxiing from the gate to takeoff on average.
Related routes
Return trip: EYW to BOS — 71% on time
More flights from Boston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOS → EYW, nonstop flights by US airlines that report to the DOT. How we calculate this.