Route on-time record
DAL to HRL: most on-time flights and the best time to fly
Dallas (Dallas Love Field) to Harlingen (Valley International Airport). 379 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was Southwest 2606 at 4:15 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DAL → HRL
Dallas to Harlingen: 379 nonstop flights a year
On time (12 months)
71%
Cancelled
0.8%
avg delay 17 min
Best time to leave
No clear winner
Most reliable airline
Southwest
71% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Southwest 2606
4:15 PM → 5:50 PM1h 35m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
- On time (history)
- 78%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 78% of the time (23 flights, Jun 2025 to May 2026).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
- 59% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 2606 fares Opens this date on Aviasales#2 · Southwest 3250
2:45 PM → 4:15 PM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-30.
67%
chance on time
- On time (history)
- 64%
- Cancelled
- 0.0%
- Avg arrival delay
- 25 min
- Arrived on time 64% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- 68% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 3250 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines71%
379 flights · 71% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Noon to 3 PM71%
87 flights · avg delay 17 min
- 3 to 6 PM72%
238 flights · avg delay 16 min
Best day: Tuesday (81%). Worst: Friday (63%).
Smarter routing
Nearby airports that run more on time
DFW → HRL 82% chance on time
Dallas Fort Worth International Airport to Valley International Airport · 1,499 flights a year · 12 mi from your airports · yours: 71%
DFW → BRO 81% chance on time
Dallas Fort Worth International Airport to Brownsville South Padre Island International Airport · 1,449 flights a year · 38 mi from your airports · yours: 71%
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft67%
- Airline (crew, maintenance, boarding)26%
- Air traffic control and airport volume6%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
DAL to HRL questions
- Which airline is most on time from DAL to HRL?
- Southwest, with a season-adjusted 71% chance of operating and arriving on time over 379 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on DAL to HRL?
- May (66% on time); the best was February (81%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from DAL
- HRL to DAL (return)
- DAL to HOU 74%
- DAL to ATL 79%
- DAL to DEN 69%
- DAL to PHX 76%
- DAL to LAS 76%
- DAL to SAT 79%
- DAL to MCO 71%
- DAL to BNA 73%
- DAL to AUS 78%
- DAL to MSY 76%
- DAL to MDW 71%
- DAL to MCI 76%
Live status: FAA delays and ground stops