Historical on-time performance
Atlanta to St. Thomas
1,599 miData through Dec 2025Source: US DOT · BTS
Flights on ATL–STT arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 644 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time73%Medianon timep9035 minCancel0.6%Flights644
Why flights run late
Delay causes
- Airline42%
- Weather8%
- Air traffic (NAS)39%
- Late aircraft12%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly ATL → STT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 83% on time.
- Mornings83% on time · p90 20 min · 616 flights
- Middays75% on time · p90 35 min · 1,231 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 71% to 85% on time.
- Thursdays85% on time · p90 20 min · 246 flights
- Wednesdays81% on time · p90 25 min · 230 flights
- Tuesdays81% on time · p90 20 min · 251 flights
- Mondays80% on time · p90 25 min · 233 flights
- Fridays76% on time · p90 25 min · 258 flights
- Sundays75% on time · p90 35 min · 263 flights
- Saturdays71% on time · p90 40 min · 366 flights
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