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Route on-time record

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

San Diego (San Diego International Airport) to Philadelphia (Philadelphia International Airport). 1,046 nonstop flights in Jun 2025 to May 2026, 88% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was American 3245 at 10:30 PM.

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

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SAN → PHL

San Diego to Philadelphia: 1,046 nonstop flights a year

On time (12 months)

88%

Cancelled

1.5%

avg delay 18 min

Best time to leave

Before 9 AM

93% on time vs 80% 9 AM to noon

Most reliable airline

American

86% chance on time

Check SAN to PHL fares

Lowest nonstop fare seen in the next two months: $472 (American 1236 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 3245

    10:30 PM → 6:44 AM5h 14m nonstop

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

    93%

    chance on time

    On time (history)
    95%
    Cancelled
    1.8%
    Avg arrival delay
    24 min
    • Arrived on time 95% of the time (168 flights, Jun 2025 to May 2026).
    • Departs outside SAN's trouble window (6 AM to noon, when 66% of its 166 ground stops and delay programs started).

    Moderate track record · 168 flights

    Find American 3245 fares Opens this date on Aviasales

  2. #2 · American 2955

    6:15 AM → 2:39 PM5h 24m nonstop

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

    91%

    chance on time

    On time (history)
    92%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 92% of the time (180 flights, Jun 2025 to May 2026).
    • Never cancelled in 180 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 9 AM to noon: 80%).
    • Departs inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.

    Moderate track record · 180 flights

    Find American 2955 fares Opens this date on Aviasales

  3. #3 · American 1333

    9:55 PM → 6:13 AM5h 18m nonstop

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

    87%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (9 flights, Jun 2025 to May 2026).
    • Departs outside SAN's trouble window (6 AM to noon, when 66% of its 166 ground stops and delay programs started).

    Limited track record · 9 flights

    Find American 1333 fares Opens this date on Aviasales

  4. #4 · American 433

    9:20 AM → 5:48 PM5h 28m nonstop

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

    78%

    chance on time

    On time (history)
    78%
    Cancelled
    0.6%
    Avg arrival delay
    17 min
    • Arrived on time 78% of the time (158 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (9 AM to noon: 80% on time; Before 9 AM: 93%).
    • Departs inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.
    • Lands inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 158 flights

    Find American 433 fares Opens this date on Aviasales

  5. #5 · American 2284

    9:05 AM → 5:26 PM5h 21m nonstop

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

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 79% of the time (48 flights, Jun 2025 to May 2026).
    • Never cancelled in 48 scheduled flights.
    • Leaves in this route's least on-time window (9 AM to noon: 80% on time; Before 9 AM: 93%).
    • Departs inside SAN's trouble window: 66% of its 166 ground stops and delay programs started between 6 AM and noon.

    Limited track record · 48 flights

    Find American 2284 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • American Airlines86%

    1,046 flights · 88% on time as flown · 1.5% cancel

On time by departure time

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

  • Before 9 AM93%

    326 flights · avg delay 11 min

  • 9 AM to noon80%

    401 flights · avg delay 16 min

  • After 9 PM92%

    319 flights · avg delay 28 min

Best day: Tuesday (90%). Worst: Friday (83%).

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
88
F
85
M
82
A
89
M
91
J
86
J
84
A
89
S
89
O
87
N
90
D
89

What delays this route

  • Airline (crew, maintenance, boarding)57%
  • Late-arriving aircraft24%
  • Severe weather10%
  • Air traffic control and airport volume8%

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 SAN to PHL…

SAN to PHL questions

What time of day is best to fly SAN to PHL?
Before 9 AM: 93% of flights arrived on time, against 80% for departures 9 AM to noon. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from SAN to PHL?
American, with a season-adjusted 86% chance of operating and arriving on time over 1,046 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 SAN to PHL?
March (82% on time); the best was May (91%), 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 SAN

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Live status: FAA delays and ground stops