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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.

PHL → MIA

Philadelphia to Miami: 3,100 nonstop flights a year

On time (12 months)

77%

Cancelled

1.9%

avg delay 21 min

Best time to leave

Before 9 AM

85% on time vs 70% 3 to 6 PM

Most reliable airline

American

77% chance on time

Check PHL to MIA fares

Lowest nonstop fare seen in the next two months: $83 (Frontier 1203 on 2026-11-08). 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 2184

    8:21 AM → 11:30 AM3h 09m nonstop

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

    88%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 89% of the time (181 flights, Jun 2025 to May 2026).
    • Never cancelled in 182 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 70%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).

    Moderate track record · 181 flights

    Find American 2184 fares Opens this date on Aviasales

  2. #2 · American 1252

    10:00 PM → 12:59 AM2h 59m nonstop

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

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    2.2%
    Avg arrival delay
    9 min
    • Arrived on time 88% of the time (177 flights, Jun 2025 to May 2026).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).

    Moderate track record · 177 flights

    Find American 1252 fares Opens this date on Aviasales

  3. #3 · American 2795

    6:05 AM → 9:02 AM2h 57m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 1697; its record covers all of them.

    86%

    chance on time

    On time (history)
    89%
    Cancelled
    1.0%
    Avg arrival delay
    7 min
    • Arrived on time 89% of the time (100 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 70%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).

    Moderate track record · 100 flights

    Find American 2795 fares Opens this date on Aviasales

  4. #4 · American 1964

    5:00 AM → 7:57 AM2h 57m nonstop

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

    85%

    chance on time

    On time (history)
    89%
    Cancelled
    3.8%
    Avg arrival delay
    4 min
    • Arrived on time 89% of the time (102 flights, Jun 2025 to May 2026).
    • Cancelled 3.8% of the time (4 of 106).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 70%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).

    Moderate track record · 102 flights

    Find American 1964 fares Opens this date on Aviasales

  5. #5 · American 1525

    7:38 PM → 10:51 PM3h 13m nonstop

    Local times, typical schedule. Last flown 2026-05-19.

    80%

    chance on time

    On time (history)
    86%
    Cancelled
    2.3%
    Avg arrival delay
    5 min
    • Arrived on time 86% of the time (43 flights, Jun 2025 to May 2026).
    • Departs inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (43 flights), so its score leans on the airline's record at this hour.

    Limited track record · 43 flights

    Find American 1525 fares Opens this date on Aviasales

  6. #6 · American 1871

    10:41 AM → 1:45 PM3h 04m nonstop

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

    80%

    chance on time

    On time (history)
    77%
    Cancelled
    0.0%
    Avg arrival delay
    32 min
    • Arrived on time 77% of the time (112 flights, Jun 2025 to May 2026).
    • Never cancelled in 114 scheduled flights.
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 112 flights

    Find American 1871 fares Opens this date on Aviasales

  7. #7 · Frontier 4443

    6:00 AM → 9:03 AM3h 03m nonstop

    Local times, typical schedule. Last flown 2026-05-03.

    78%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 86% of the time (22 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 70%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find Frontier 4443 fares Opens this date on Aviasales

  8. #8 · American 1381

    12:50 PM → 3:50 PM3h 00m nonstop

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

    78%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 84% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 44 flights

    Find American 1381 fares Opens this date on Aviasales

  9. #9 · American 3265

    2:26 PM → 5:25 PM2h 59m nonstop

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

    77%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    24 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Departs inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
    • Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.
    • 91% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find American 3265 fares Opens this date on Aviasales

  10. #10 · American 2894

    10:25 AM → 1:29 PM3h 04m nonstop

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

    77%

    chance on time

    On time (history)
    76%
    Cancelled
    3.3%
    Avg arrival delay
    24 min
    • Arrived on time 76% of the time (29 flights, Jun 2025 to May 2026).
    • Cancelled 3.3% of the time (1 of 30).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Lands inside MIA's trouble window: 49% of its 45 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 29 flights

    Find American 2894 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • American Airlines77%

    2,492 flights · 78% on time as flown · 1.8% cancel

  • Spirit Airlines73%

    257 flights · 75% on time as flown · 2.7% cancel

  • Frontier Airlines65%

    351 flights · 65% on time as flown · 2.0% cancel

On time by departure time

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

  • Before 9 AM85%

    952 flights · avg delay 12 min

  • 9 AM to noon77%

    528 flights · avg delay 22 min

  • Noon to 3 PM72%

    426 flights · avg delay 21 min

  • 3 to 6 PM70%

    645 flights · avg delay 31 min

  • 6 to 9 PM71%

    485 flights · avg delay 21 min

Best day: Tuesday (82%). Worst: Sunday (74%).

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