Historical on-time performance
Houston to Harlingen
276 miData through May 2026Source: US DOT · BTS
Flights on HOU–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)
Cancelled0.2%of scheduled flights
based on 1,224 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time76%Medianon timep9040 minCancel0.2%Flights1,224
Why flights run late
Delay causes
- Airline32%
- Weather6%
- Air traffic (NAS)5%
- Late aircraft56%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 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 HOU → HRL
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 10 min · 896 flights
- Middays85% on time · p90 20 min · 725 flights
- Afternoons78% on time · p90 35 min · 601 flights
- Evenings75% on time · p90 40 min · 702 flights
- Overnights66% on time · p90 60 min · 994 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 76% to 83% on time.
- Wednesdays83% on time · p90 25 min · 587 flights
- Tuesdays83% on time · p90 25 min · 592 flights
- Sundays77% on time · p90 35 min · 537 flights
- Mondays77% on time · p90 35 min · 599 flights
- Saturdays77% on time · p90 40 min · 400 flights
- Thursdays76% on time · p90 40 min · 599 flights
- Fridays76% on time · p90 30 min · 605 flights
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