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Route on-time record

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

Austin (Austin Bergstrom International Airport) to Philadelphia (Philadelphia International Airport). 1,210 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.4% were cancelled. The most reliable flight number was American 2774 at 5:45 AM.

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AUS → PHL

Austin to Philadelphia: 1,210 nonstop flights a year

On time (12 months)

74%

Cancelled

2.4%

avg delay 44 min

Best time to leave

Before 9 AM

84% on time vs 65% 3 to 6 PM

Most reliable airline

American

73% chance on time

Check AUS to PHL fares

Lowest nonstop fare seen in the next two months: $101 (American 2774 on 2026-10-22). 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 2774

    5:45 AM → 10:16 AM3h 31m nonstop

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

    80%

    chance on time

    On time (history)
    84%
    Cancelled
    3.4%
    Avg arrival delay
    46 min
    • Arrived on time 84% of the time (337 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (12 of 350).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 3 to 6 PM: 65%).
    • Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).

    Strong track record · 337 flights

    Find American 2774 fares Opens this date on Aviasales

  2. #2 · American 1407

    12:13 PM → 4:49 PM3h 36m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1829; its record covers all of them.

    76%

    chance on time

    On time (history)
    87%
    Cancelled
    3.0%
    Avg arrival delay
    39 min
    • Arrived on time 87% of the time (31 flights, Jun 2025 to May 2026).
    • Cancelled 3.0% of the time (1 of 33).
    • Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 31 flights

    Find American 1407 fares Opens this date on Aviasales

  3. #3 · American 1441

    4:26 PM → 9:04 PM3h 38m nonstop

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

    75%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    26 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 65% on time; Before 9 AM: 84%).
    • Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).
    • 94% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find American 1441 fares Opens this date on Aviasales

  4. #4 · American 399

    4:36 PM → 9:10 PM3h 34m nonstop

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

    72%

    chance on time

    On time (history)
    80%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 80% of the time (15 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 65% on time; Before 9 AM: 84%).
    • Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 92 ground stops and delay programs started).

    Limited track record · 15 flights

    Find American 399 fares Opens this date on Aviasales

  5. #5 · American 1423

    2:10 PM → 6:49 PM3h 39m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1820; its record covers all of them.

    67%

    chance on time

    On time (history)
    73%
    Cancelled
    1.9%
    Avg arrival delay
    47 min
    • Arrived on time 73% of the time (51 flights, Jun 2025 to May 2026).
    • Departs inside AUS's trouble window: 79% of its 92 ground stops and delay programs started between 10 AM and 4 PM.
    • Lands inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
    • 54% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 51 flights

    Find American 1423 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • American Airlines73%

    1,138 flights · 74% on time as flown · 2.4% cancel

On time by departure time

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

  • Before 9 AM84%

    349 flights · avg delay 47 min

  • 9 AM to noon78%

    191 flights · avg delay 29 min

  • Noon to 3 PM70%

    442 flights · avg delay 46 min

  • 3 to 6 PM65%

    209 flights · avg delay 47 min

Best day: Saturday (82%). Worst: Sunday (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.

J
77
F
85
M
79
A
79
M
75
J
67
J
70
A
72
S
77
O
76
N
79
D
76

What delays this route

  • Airline (crew, maintenance, boarding)53%
  • Late-arriving aircraft35%
  • Severe weather6%
  • 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

Finding the most reliable connections from AUS to PHL…

AUS to PHL questions

What time of day is best to fly AUS to PHL?
Before 9 AM: 84% of flights arrived on time, against 65% 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 AUS to PHL?
American, with a season-adjusted 73% chance of operating and arriving on time over 1,138 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 AUS to PHL?
June (67% on time); the best was February (85%), 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.

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Live status: FAA delays and ground stops