Historical on-time performance
Dallas to Harlingen
458 miData through Dec 2025Source: US DOT · BTS
Flights on DAL–HRL arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.7%of scheduled flights
based on 351 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time72%Medianon timep9045 minCancel1.7%Flights351
Why flights run late
Delay causes
- Airline20%
- Weather6%
- Air traffic (NAS)10%
- Late aircraft64%
- 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 DAL → HRL
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Middays are the most reliable time of day to fly this route — 83% on time.
- Middays83% on time · p90 25 min · 240 flights
- Afternoons74% on time · p90 35 min · 448 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 63% to 84% on time.
- Tuesdays84% on time · p90 20 min · 96 flights · limited
- Wednesdays79% on time · p90 20 min · 95 flights · limited
- Thursdays77% on time · p90 45 min · 92 flights · limited
- Sundays76% on time · p90 35 min · 143 flights · limited
- Saturdays75% on time · p90 45 min · 166 flights · limited
- Mondays70% on time · p90 55 min · 93 flights · limited
- Fridays63% on time · p90 40 min · 93 flights · limited
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