Route on-time record
HRL to AUS: most on-time flights and the best time to fly
Harlingen (Valley International Airport) to Austin (Austin Bergstrom International Airport). 656 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.2% were cancelled. The most reliable flight number was Southwest 2433 at 6:55 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
HRL → AUS
Harlingen to Austin: 656 nonstop flights a year
On time (12 months)
84%
Cancelled
0.2%
avg delay 10 min
Best time to leave
Before 9 AM
97% on time vs 66% 6 to 9 PM
Most reliable airline
Southwest
84% 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 2433
6:55 AM → 8:05 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3044, 1845; its record covers all of them.
94%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 95% of the time (78 flights, Jun 2025 to May 2026).
- Never cancelled in 78 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 97% on time; 6 to 9 PM: 66%).
Moderate track record · 78 flights
Find Southwest 2433 fares Opens this date on Aviasales#2 · Southwest 1862
5:30 PM → 6:45 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.0%
- Avg arrival delay
- 9 min
- Arrived on time 80% of the time (15 flights, Jun 2025 to May 2026).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 1862 fares Opens this date on Aviasales#3 · Southwest 2901
6:20 PM → 7:35 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-01.
71%
chance on time
- On time (history)
- 50%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 50% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; Before 9 AM: 97%).
- 76% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 2901 fares Opens this date on Aviasales#4 · Southwest 2434
6:00 PM → 7:15 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 62%
- Cancelled
- 0.0%
- Avg arrival delay
- 39 min
- Arrived on time 62% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; Before 9 AM: 97%).
- 64% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 2434 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines84%
649 flights · 84% on time as flown · 0.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM97%
337 flights · avg delay 2 min
- 3 to 6 PM77%
187 flights · avg delay 14 min
- 6 to 9 PM66%
96 flights · avg delay 18 min
Best day: Wednesday (87%). Worst: Thursday (79%).
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 aircraft54%
- Airline (crew, maintenance, boarding)26%
- Air traffic control and airport volume21%
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
HRL to AUS questions
- What time of day is best to fly HRL to AUS?
- Before 9 AM: 97% of flights arrived on time, against 66% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from HRL to AUS?
- Southwest, with a season-adjusted 84% chance of operating and arriving on time over 649 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 HRL to AUS?
- May (71% on time); the best was February (92%), 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 HRL
Live status: FAA delays and ground stops