Route on-time record
PHL to SAN: most on-time flights and the best time to fly
Philadelphia (Philadelphia International Airport) to San Diego (San Diego International Airport). 1,046 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was American 1621 at 8:21 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PHL → SAN
Philadelphia to San Diego: 1,046 nonstop flights a year
On time (12 months)
78%
Cancelled
1.5%
avg delay 17 min
Best time to leave
Before 9 AM
89% on time vs 71% 6 to 9 PM
Most reliable airline
American
76% 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 · American 1621
8:21 AM → 11:17 AM5h 56m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 90% of the time (207 flights, Jun 2025 to May 2026).
- Never cancelled in 207 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 71%).
- Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
Strong track record · 207 flights
Find American 1621 fares Opens this date on Aviasales#2 · American 1333
6:00 PM → 8:53 PM5h 53m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
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).
- Leaves in this route's least on-time window (6 to 9 PM: 71% on time; Before 9 AM: 89%).
- Departs inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 9 flights
Find American 1333 fares Opens this date on Aviasales#3 · American 1497
7:49 PM → 10:49 PM6h 00m nonstop
Local times, typical schedule. Last flown 2026-05-20.
73%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 23 min
- Arrived on time 73% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Leaves in this route's least on-time window (6 to 9 PM: 71% on time; Before 9 AM: 89%).
- Departs inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 44 flights
Find American 1497 fares Opens this date on Aviasales#4 · American 1489
3:55 PM → 6:35 PM5h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1743; its record covers all of them.
69%
chance on time
- On time (history)
- 70%
- Cancelled
- 2.2%
- Avg arrival delay
- 27 min
- Arrived on time 70% of the time (173 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.
Moderate track record · 173 flights
Find American 1489 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- American Airlines76%
1,046 flights · 78% on time as flown · 1.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM89%
358 flights · avg delay 7 min
- 3 to 6 PM73%
327 flights · avg delay 24 min
- 6 to 9 PM71%
356 flights · avg delay 22 min
Best day: Tuesday (79%). Worst: Friday (72%).
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
- Airline (crew, maintenance, boarding)33%
- Air traffic control and airport volume28%
- Late-arriving aircraft28%
- Severe weather10%
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
PHL to SAN questions
- What time of day is best to fly PHL to SAN?
- Before 9 AM: 89% of flights arrived on time, against 71% 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 PHL to SAN?
- American, with a season-adjusted 76% 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 PHL to SAN?
- July (63% on time); the best was March (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.
More routes from PHL
- SAN to PHL (return)
- PHL to ATL 78%
- PHL to MCO 72%
- PHL to BOS 75%
- PHL to ORD 72%
- PHL to CLT 80%
- PHL to DFW 77%
- PHL to FLL 72%
- PHL to MIA 77%
- PHL to DEN 76%
- PHL to DTW 80%
- PHL to BNA 75%
- PHL to TPA 73%
Most on-time flights from PHL on every route →
Live status: FAA delays and ground stops