Historical on-time performance
San Antonio to Detroit
1,215 miData through Dec 2025Source: US DOT · BTS
Flights on SAT–DTW arrive on time 89% of the time over the last 12 months.
On-time rate89%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.4%of scheduled flights
based on 932 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesOn-time89%Medianon timep9015 minCancel0.4%Flights932
Why flights run late
Delay causes
- Airline36%
- Weather11%
- Air traffic (NAS)11%
- Late aircraft42%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SAT → DTW
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 — 93% on time.
- Mornings93% on time · p90 5 min · 1,107 flights
- Middays86% on time · p90 20 min · 600 flights
- Afternoons83% on time · p90 30 min · 1,068 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 85% to 89% on time.
- Wednesdays89% on time · p90 15 min · 400 flights
- Tuesdays89% on time · p90 15 min · 400 flights
- Thursdays89% on time · p90 10 min · 406 flights
- Saturdays88% on time · p90 10 min · 322 flights
- Fridays87% on time · p90 15 min · 417 flights
- Mondays86% on time · p90 25 min · 426 flights
- Sundays85% on time · p90 25 min · 405 flights
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