Historical on-time performance
San Antonio to Washington
1,362 miData through Dec 2025Source: US DOT · BTS
Flights on SAT–IAD arrive on time 90% of the time over the last 12 months.
On-time rate90%arrived within 15 min
p90 delay10 min1 in 10 flights is worse (tail risk)
Cancelled0.3%of scheduled flights
based on 647 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time90%Medianon timep9010 minCancel0.3%Flights647
Why flights run late
Delay causes
- Airline37%
- Weather4%
- Air traffic (NAS)11%
- Late aircraft47%
- 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 → IAD
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 · 1,040 flights
- Middays85% on time · p90 15 min · 920 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 86% to 92% on time.
- Mondays92% on time · p90 5 min · 307 flights
- Wednesdays90% on time · p90 10 min · 292 flights
- Saturdays90% on time · p90 10 min · 203 flights
- Sundays89% on time · p90 10 min · 244 flights
- Tuesdays89% on time · p90 10 min · 298 flights
- Thursdays88% on time · p90 15 min · 307 flights
- Fridays86% on time · p90 15 min · 310 flights
Advertisement
Keep exploring