Historical on-time performance
St. Thomas to Atlanta
1,599 miData through May 2026Source: US DOT · BTS
Flights on STT–ATL arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights
based on 720 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time80%Medianon timep9035 minCancel2.2%Flights720
Why flights run late
Delay causes
- Airline51%
- Weather2%
- Air traffic (NAS)9%
- Late aircraft37%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline50%
- Weather25%
- Air traffic (NAS)6%
- Security19%
Most cancellations here are attributed to Airline. Shares are among 16 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly STT → ATL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 78% on time.
- Afternoons78% on time · p90 40 min · 1,413 flights
- Middays77% on time · p90 55 min · 538 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 81% on time.
- Tuesdays81% on time · p90 20 min · 260 flights
- Thursdays81% on time · p90 35 min · 269 flights
- Wednesdays79% on time · p90 40 min · 256 flights
- Fridays79% on time · p90 25 min · 273 flights
- Mondays79% on time · p90 50 min · 260 flights
- Saturdays73% on time · p90 55 min · 383 flights
- Sundays72% on time · p90 50 min · 276 flights
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