Historical on-time performance
Austin to Harlingen
273 miData through Dec 2025Source: US DOT · BTS
Flights on AUS–HRL arrive on time 76% of the time over the last 12 months.
On-time rate76%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled2.2%of scheduled flights
based on 766 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Southwest AirlinesOn-time77%Medianon timep9040 minCancel1.7%Flights643
- SkyWest AirlinesOn-time72%Medianon timep9040 minCancel4.9%Flights123
Why flights run late
Delay causes
- Airline30%
- Weather4%
- Air traffic (NAS)5%
- Late aircraft61%
- 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 AUS → HRL
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 — 92% on time.
- Mornings92% on time · p90 5 min · 485 flights
- Middays88% on time · p90 15 min · 598 flights
- Afternoons78% on time · p90 25 min · 495 flights
- Evenings71% on time · p90 40 min · 205 flights
- Overnights64% on time · p90 65 min · 359 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 84% on time.
- Wednesdays84% on time · p90 25 min · 347 flights
- Tuesdays84% on time · p90 25 min · 346 flights
- Mondays83% on time · p90 25 min · 348 flights
- Fridays82% on time · p90 25 min · 344 flights
- Saturdays78% on time · p90 35 min · 177 flights · limited
- Thursdays77% on time · p90 35 min · 341 flights
- Sundays76% on time · p90 35 min · 239 flights
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