STT to BOS flight delays & on-time performance
Nonstop flights from Cyril E. King Airport to Boston Logan International Airport · 1,693 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at STT or BOS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Charlotte Amalie (STT) to Boston (BOS) arrived on time 79% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 4.7% were cancelled, and 10% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- Tuesday was the most reliable day to fly (94% on time) and Sunday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (54%).
Which airline is most on time from STT to BOS?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 79% | 4.7% | 15 min | 9.7% | 127 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
Not enough departures across different hours to compare.
Best day of the week
On-time arrival rate by day of departure.
- Monday79%11.1% cancelled
- Tuesday94%0.0% cancelled
- Wednesday75%0.0% cancelled
- Thursday89%0.0% cancelled
- Friday71%0.0% cancelled
- Saturday75%10.5% cancelled
- Sunday64%11.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft54%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion18%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Airline (crew, maintenance, cleaning, fueling)17%
- Security17%
- Air traffic control & airport congestion0%
STT to BOS: common questions
- How often are STT to BOS flights on time?
- 79% 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 Charlotte Amalie to Boston cancelled?
- 4.7% of scheduled flights were cancelled (6 of 127).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 68 min behind schedule on average, and 9.7% of flights were an hour or more late.
- How long is taxi time at STT?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOS to STT — 74% on time
More flights from Charlotte Amalie
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: STT → BOS, nonstop flights by US airlines that report to the DOT. How we calculate this.