Best Time to Fly DAL to HRL: On-Time Stats by Hour & Airline
Dallas Love Field → Valley International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.4% of Dallas (DAL) to Harlingen/San Benito (HRL) flights arrived on time (378 scheduled flights). That is 8.2 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
March has been the best month (80% on time) and Friday the weakest day of the week (64%).
0.5% of flights were cancelled, versus 1.8% nationally.
DAL to HRL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 69.4% | 53 min | 0.5% | 378 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DAL to HRL
On-time arrival % by scheduled departure hour (local time), 757 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 9am–10am | Limited data | 25 | |
| 10am–11am | Limited data | 14 | |
| 11am–12pm | 78.1% | 0.0% | 32 |
| 12pm–1pm | 74.5% | 1.8% | 56 |
| 1pm–2pm | 75.9% | 1.8% | 55 |
| 2pm–3pm | 63.4% | 0.0% | 41 |
| 3pm–4pm | 75.5% | 1.1% | 273 |
| 4pm–5pm | 73.2% | 1.0% | 200 |
| 5pm–6pm | Limited data | 14 | |
| 6pm–7pm | Limited data | 12 | |
| 7pm–8pm | Limited data | 15 | |
| 8pm–9pm | Limited data | 1 | |
| 9pm–10pm | Limited data | 19 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DAL to HRL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 15 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 70.6% | -3.9 pts | 0.0% | 35 |
| Summer peak (Jun 15 - Aug 15) | 70.3% | -4.2 pts | 0.0% | 138 |
| All other days | 74.5% | — | 1.4% | 569 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).