ON TIMEBOARD

ATL → STT on time

Atlanta Hartsfield-Jackson (Atlanta, GA) to Cyril E. King (Charlotte Amalie, VI). Every scheduled flight, September 2025 to August 2026.

On time
76%
arrived < 15 min late
Cancelled
0.7%
719 flights
Typical arrival
0 min
median vs schedule
When late
+46 min
average delay
Flights / day
2
1 airline

76% of flights from Atlanta to Charlotte Amalie arrived on time over the past 12 months. That is worse than the typical U.S. route. The 8 a.m. departures ran on time 80% of the time; the 11 a.m. ones 72%. 5% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for ATL → STT: when a flight was late, it was under 45 minutes late 72% of the time. About 1 in 22 flights landed an hour or more late, and 1 in 180 three hours or more; 0.7% were cancelled outright.

Share of all 719 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Delta Air Lines71976%0.7%0 min4.5%+46 minDelta Air Lines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at ATL). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%8 a.m. departures: 80% on time (100 flights)808a9 a.m. departures: too few flights (49 flights)9a10 a.m. departures: 76% on time (310 flights)7610a11 a.m. departures: 72% on time (251 flights)7211a
ATL → STT, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On ATL → STT, each airline's last flight of the day was cancelled 0.4% of the time, against 1.1% for its earlier flights, so here the last flight is actually the safer one. It arrived 3+ hours late 0.8% of the time (earlier flights: 0.6%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
Delta Air Lines11:35 a.m.0.4%0.8%1.1%first flight 10:33 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

By month

Each calendar month pooled over 2023–2026. Best: October (91%). Worst: April (71%).

40%70%100%Jan: 74% on time (224 flights)74JanFeb: 79% on time (196 flights)79FebMar: 71% on time (227 flights)71MarApr: 71% on time (182 flights)71AprMay: 76% on time (187 flights)76MayJun: 80% on time (192 flights)80JunJul: 73% on time (198 flights)73JulAug: 73% on time (118 flights)73AugSep: 86% on time (103 flights)86SepOct: 91% on time (105 flights)91OctNov: 81% on time (104 flights)81NovDec: 72% on time (165 flights)72Dec

By day of week

DayFlightsOn timeCancelled
Monday99——
Tuesday97——
Wednesday97——
Thursday98——
Friday98——
Saturday13060%2.3%
Sunday10066%1.0%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Air traffic & airport (NAS) 48%Airline (crew, maintenance, ops) 41%Late inbound plane 6%Severe weather 4%

Cancellations: security 3 · weather 2

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
DL 188310:30 a.m.16273%1.2%+6 minDelta Air Lines
DL 188911:35 a.m.22169%0.4%0 minDelta Air Lines

Worst days in the past year

DateFlightsOn timeCancelled
Dec 28, 202530%0
Jan 3, 202630%3
Jan 19, 202630%0
Jan 10, 202630%0
Mar 16, 202630%1

Questions

How often are flights from ATL to STT on time?

76% of 719 scheduled flights from Atlanta, GA to Charlotte Amalie, VI arrived within 15 minutes of schedule between September 2025 and August 2026. 0.7% were cancelled.

What is the best time of day to fly ATL to STT?

Flights scheduled to leave at 8 a.m. were the most reliable (80% on time). The 11 a.m. departures were the least (72%).

What month has the most delays from ATL to STT?

April (71% on time). The best month is October (91%), over 2023–2026.

Is the last flight of the day from ATL to STT more likely to be cancelled?

No, the opposite. Each airline's last ATL–STT flight of the day was cancelled 0.4% of the time over the past year, against 1.1% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.