Boston (BOS) to Charlotte Amalie (STT): On-Time Performance
Data through July 2026
Boston (BOS) to Charlotte Amalie (STT) is a thinner route than most in this dataset — 318 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 75% arrived on time. Cancellations are the bigger caveat: 3% of scheduled flights never departed.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 3.0%
- Flights/day
- 0.87
- last 12 months
- Duration
- 4h 3m
- scheduled
- Distance
- 1,693 mi
Best airline from BOS to STT
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| JetBlue Airwaysmost reliable | 76% | 16 min | 2.4% | 335 |
| Delta Air Lines | 70% | 32 min | 4.7% | 127 |
Monthly on-time trend
Best time to fly from BOS to STT
Aim for departures around 10 a.m. (86% on-time); avoid 9 a.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 19 min |
| Tuesdaybest | 82% | 10 min |
| Wednesday | 78% | 26 min |
| Thursday | 75% | 18 min |
| Friday | 77% | 7 min |
| Saturday | 73% | 25 min |
| Sunday | 66% | 35 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft7%
- Airline operations41%
- National airspace system42%
- Weather10%
Frequently asked questions
- How often are flights from BOS to STT delayed?
- 25% of BOS–STT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 20 minutes.
- Which airline is most reliable from BOS to STT?
- JetBlue Airways has the best on-time record on this route at 76%, based on 335 flights. 2 airlines flew BOS–STT frequently enough to compare in this period.
- What is the best time of day to fly from BOS to STT?
- Departures around 10 a.m. have the best record (86% on-time), while departures around 9 a.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BOS to STT?
- The scheduled BOS–STT flight time averages 4h 3m over 1,693 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BOS to STT flights cancelled?
- 3% of scheduled flights on this route were cancelled between 2024-07 and 2026-07 — several times the typical US rate, so consider earlier departures or backup options.
- What day of the week is most reliable for BOS to STT?
- Tuesday flights have the best record at 82% on-time. Day-of-week differences on this route are meaningful — Sunday trails at 66%.
Explore related pages
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Based on 462 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.