Historical on-time performance
Austin to Harlingen
273 miData through May 2026Source: US DOT · BTS
Flights on AUS–HRL arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 649 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time74%Medianon timep9050 minCancel0.2%Flights649
Why flights run late
Delay causes
- Airline22%
- Weather2%
- Air traffic (NAS)5%
- Late aircraft71%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline100%
- Weather0%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 1 cancellations with a reported cause (BTS reports causes from June 2003).
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 (2023-06 .. 2026-05).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 62% to 92% on time.
- Mornings92% on time · p90 10 min · 453 flights
- Middays89% on time · p90 15 min · 625 flights
- Afternoons77% on time · p90 25 min · 376 flights
- Evenings70% on time · p90 50 min · 288 flights
- Overnights62% on time · p90 75 min · 422 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Wednesdays84% on time · p90 30 min · 345 flights
- Tuesdays84% on time · p90 25 min · 344 flights
- Mondays81% on time · p90 30 min · 346 flights
- Fridays80% on time · p90 30 min · 346 flights
- Saturdays76% on time · p90 35 min · 192 flights · limited
- Thursdays75% on time · p90 40 min · 343 flights
- Sundays75% on time · p90 45 min · 248 flights
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