Historical on-time performance
Newark to San Antonio
1,569 miData through Dec 2025Source: US DOT · BTS
Flights on EWR–SAT arrive on time 81% of the time over the last 12 months.
On-time rate81%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 490 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time81%Medianon timep9035 minCancel0.0%Flights490
Why flights run late
Delay causes
- Airline33%
- Weather7%
- Air traffic (NAS)26%
- Late aircraft34%
- 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 EWR → SAT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 77% to 84% on time.
- Middays84% on time · p90 30 min · 1,081 flights
- Mornings83% on time · p90 25 min · 860 flights
- Afternoons77% on time · p90 30 min · 107 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 85% on time.
- Mondays85% on time · p90 20 min · 317 flights
- Tuesdays84% on time · p90 30 min · 309 flights
- Thursdays84% on time · p90 25 min · 314 flights
- Wednesdays84% on time · p90 30 min · 295 flights
- Saturdays83% on time · p90 30 min · 241 flights
- Sundays82% on time · p90 45 min · 266 flights
- Fridays79% on time · p90 30 min · 306 flights
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