OnTimeStats

Historical on-time performance

San Antonio to El Paso

496 miData through Dec 2025Source: US DOT · BTS

Flights on SAT–ELP arrive on time 83% of the time over the last 12 months.

On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights

based on 906 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).

By airline

How each carrier compares

  • Southwest Airlines
    On-time83%
    Medianon time
    p9030 min
    Cancel0.6%
    Flights906

Why flights run late

Delay causes

  • Airline23%
  • Weather1%
  • Air traffic (NAS)6%
  • Late aircraft70%
  • 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 → ELP

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 — 96% on time.

  • Mornings96% on time · p90 on time · 782 flights
  • Middays84% on time · p90 20 min · 567 flights
  • Afternoons79% on time · p90 30 min · 440 flights
  • Evenings70% on time · p90 45 min · 576 flights
  • Overnights48% on time · p90 125 min · 62 flights · limited

Best day of week

On-time rates are fairly even by day on this route — ranging from 78% to 88% on time.

  • Saturdays88% on time · p90 15 min · 242 flights
  • Tuesdays86% on time · p90 25 min · 333 flights
  • Wednesdays86% on time · p90 20 min · 328 flights
  • Mondays83% on time · p90 20 min · 376 flights
  • Fridays81% on time · p90 40 min · 374 flights
  • Sundays79% on time · p90 35 min · 404 flights
  • Thursdays78% on time · p90 25 min · 370 flights
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Methodology

A flight is on time when it arrives within 15 minutes of schedule — the US DOT / BTS standard. Median and p90(the “1-in-10 bad day”) are read from the full arrival-delay distribution, never averaged across periods.

Figures cover a carrier’s own BTS-coded flights. Cells below ~200 flights are flagged as limited data. All numbers are pre-computed from public BTS On-Time Performance data.