MIA to STT flight delays & on-time performance
Nonstop flights from Miami International Airport to Cyril E. King Airport · 1,107 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MIA or STT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Miami (MIA) to Charlotte Amalie (STT) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 6% arrived an hour or more late.
- American Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (95% on time); around 12pm did worst (54%).
- Wednesday was the most reliable day to fly (85% on time) and Saturday the least (69%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).
Which airline is most on time from MIA to STT?
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 |
|---|---|---|---|---|---|
| American Airlines | 77% | 0.7% | 13 min | 5.7% | 941 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am95%117 flights
- 9am93%81 flights
- 10am75%241 flights
- 11am78%65 flights
- 12pm54%91 flights
- 1pm76%346 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%0.0% cancelled
- Tuesday84%0.8% cancelled
- Wednesday85%0.0% cancelled
- Thursday84%0.0% cancelled
- Friday81%0.0% cancelled
- Saturday69%3.9% cancelled
- Sunday70%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.
- Airline (crew, maintenance, cleaning, fueling)40%
- Air traffic control & airport congestion27%
- Late-arriving aircraft27%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather57%
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
MIA to STT: common questions
- How often are MIA to STT flights on time?
- 77% 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 Miami to Charlotte Amalie cancelled?
- 0.7% of scheduled flights were cancelled (7 of 941).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 51 min behind schedule on average, and 5.7% of flights were an hour or more late.
- How long is taxi time at MIA?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: STT to MIA — 82% on time
More flights from Miami
More flights to Charlotte Amalie
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MIA → STT, nonstop flights by US airlines that report to the DOT. How we calculate this.