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Route on-time record

MIA to AUS: most on-time flights and the best time to fly

Miami (Miami International Airport) to Austin (Austin Bergstrom International Airport). 2,131 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was American 1417 at 8:02 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

MIA → AUS

Miami to Austin: 2,131 nonstop flights a year

On time (12 months)

73%

Cancelled

1.1%

avg delay 20 min

Best time to leave

Before 9 AM

92% on time vs 64% 3 to 6 PM

Most reliable airline

Frontier

77% chance on time

Check MIA to AUS fares

Lowest nonstop fare seen in the next two months: $194 (American 1747 on 2026-11-02). 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. #1 · American 1417

    8:02 AM → 10:04 AM3h 02m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    89%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (10 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 64%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 10 flights

    Find American 1417 fares Opens this date on Aviasales

  2. #2 · American 1823

    7:40 AM → 9:49 AM3h 09m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    88%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 91% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 64%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Limited track record · 44 flights

    Find American 1823 fares Opens this date on Aviasales

  3. #3 · American 2708

    7:20 AM → 9:43 AM3h 23m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    1.5%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (129 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 64%).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Moderate track record · 129 flights

    Find American 2708 fares Opens this date on Aviasales

  4. #4 · American 2591

    2:45 PM → 4:57 PM3h 12m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    74%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 73% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (44 flights), so its score leans on the airline's record at this hour.

    Limited track record · 44 flights

    Find American 2591 fares Opens this date on Aviasales

  5. #5 · American 2629

    7:40 PM → 9:46 PM3h 06m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    73%

    chance on time

    On time (history)
    75%
    Cancelled
    2.2%
    Avg arrival delay
    19 min
    • Arrived on time 75% of the time (272 flights, Jun 2025 to May 2026).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Strong track record · 272 flights

    Find American 2629 fares Opens this date on Aviasales

  6. #6 · American 1411

    3:17 PM → 5:20 PM3h 03m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1397; its record covers all of them.

    72%

    chance on time

    On time (history)
    78%
    Cancelled
    1.5%
    Avg arrival delay
    17 min
    • Arrived on time 78% of the time (63 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 64% on time; Before 9 AM: 92%).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • 64% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 63 flights

    Find American 1411 fares Opens this date on Aviasales

  7. #7 · American 1933

    7:00 PM → 9:24 PM3h 24m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    72%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    40 min
    • Arrived on time 73% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 30 scheduled flights.
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).
    • Short track record (30 flights), so its score leans on the airline's record at this hour.

    Limited track record · 30 flights

    Find American 1933 fares Opens this date on Aviasales

  8. #8 · Southwest 1081

    2:00 PM → 4:20 PM3h 20m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    70%

    chance on time

    On time (history)
    75%
    Cancelled
    3.0%
    Avg arrival delay
    11 min
    • Arrived on time 75% of the time (32 flights, Jun 2025 to May 2026).
    • Cancelled 3.0% of the time (1 of 33).
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find Southwest 1081 fares Opens this date on Aviasales

  9. #9 · American 1427

    9:50 PM → 11:59 PM3h 09m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1521; its record covers all of them.

    67%

    chance on time

    On time (history)
    68%
    Cancelled
    1.8%
    Avg arrival delay
    28 min
    • Arrived on time 68% of the time (323 flights, Jun 2025 to May 2026).
    • Departs outside MIA's trouble window (1 PM to 7 PM, when 49% of its 45 ground stops and delay programs started).

    Strong track record · 323 flights

    Find American 1427 fares Opens this date on Aviasales

  10. #10 · Southwest 3419

    1:50 PM → 3:55 PM3h 05m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    67%

    chance on time

    On time (history)
    63%
    Cancelled
    0.0%
    Avg arrival delay
    25 min
    • Arrived on time 63% of the time (54 flights, Jun 2025 to May 2026).
    • Never cancelled in 54 scheduled flights.
    • Departs inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.

    Limited track record · 54 flights

    Find Southwest 3419 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines77%

    55 flights · 84% on time as flown · 0.8% cancel

  • American Airlines73%

    1,510 flights · 74% on time as flown · 1.4% cancel

  • Southwest Airlines70%

    348 flights · 69% on time as flown · 0.5% cancel

  • Delta Air Lines68%

    192 flights · 67% on time as flown · 1.1% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM92%

    418 flights · avg delay 6 min

  • 9 AM to noon75%

    87 flights · avg delay 14 min

  • Noon to 3 PM70%

    441 flights · avg delay 18 min

  • 3 to 6 PM64%

    296 flights · avg delay 27 min

  • 6 to 9 PM70%

    559 flights · avg delay 26 min

  • After 9 PM68%

    330 flights · avg delay 28 min

Best day: Tuesday (79%). Worst: Sunday (67%).

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.

J
73
F
80
M
70
A
77
M
69
J
63
J
65
A
69
S
78
O
80
N
79
D
73

What delays this route

  • Late-arriving aircraft39%
  • Airline (crew, maintenance, boarding)39%
  • Air traffic control and airport volume17%
  • Severe weather6%

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

MIA to AUS questions

What time of day is best to fly MIA to AUS?
Before 9 AM: 92% of flights arrived on time, against 64% for departures 3 to 6 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 MIA to AUS?
Frontier, with a season-adjusted 77% chance of operating and arriving on time over 55 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 MIA to AUS?
June (63% on time); the best was October (80%), 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 MIA

Live status: FAA delays and ground stops