Route on-time record

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

Los Angeles (Los Angeles International Airport) to Philadelphia (Philadelphia International Airport). 2,445 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was American 839 at 6:20 AM.

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

LAX → PHL

Los Angeles to Philadelphia: 2,445 nonstop flights a year

On time (12 months)

78%

Cancelled

1.6%

avg delay 19 min

Best time to leave

Before 9 AM

88% on time vs 71% 9 AM to noon

Most reliable airline

American

78% chance on time

Check LAX to PHL fares

Lowest nonstop fare seen in the next two months: $277 (Southwest 1627 on 2026-10-31). 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 839
6:20 AM → 2:37 PM5h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
89%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 95% 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: 88% on time; 9 AM to noon: 71%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 44 flights
Find American 839 fares Opens this date on Aviasales
#2 · American 1528
8:05 AM → 4:27 PM5h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
On time (history)
91%
Cancelled
1.5%
Avg arrival delay
13 min
- Arrived on time 91% of the time (127 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 9 AM to noon: 71%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 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 · 127 flights
Find American 1528 fares Opens this date on Aviasales
#3 · American 2758
11:50 PM → 8:06 AM5h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 3110; its record covers all of them.
85%
chance on time
On time (history)
86%
Cancelled
1.8%
Avg arrival delay
9 min
- Arrived on time 86% of the time (276 flights, Jun 2025 to May 2026).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Strong track record · 276 flights
Find American 2758 fares Opens this date on Aviasales
#4 · American 1713
11:05 PM → 7:20 AM5h 15m nonstop
Local times, typical schedule. Last flown 2026-05-20.
84%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 91% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 78% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 44 flights
Find American 1713 fares Opens this date on Aviasales
#5 · American 1451
6:00 AM → 2:21 PM5h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
On time (history)
84%
Cancelled
0.6%
Avg arrival delay
12 min
- Arrived on time 84% of the time (160 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 9 AM to noon: 71%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 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 · 160 flights
Find American 1451 fares Opens this date on Aviasales
#6 · American 3164
10:13 AM → 6:35 PM5h 22m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (9 AM to noon: 71% on time; Before 9 AM: 88%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 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 · 11 flights
Find American 3164 fares Opens this date on Aviasales
#7 · American 3172
8:15 AM → 4:32 PM5h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
82%
chance on time
On time (history)
86%
Cancelled
2.3%
Avg arrival delay
23 min
- Arrived on time 86% of the time (43 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 9 AM to noon: 71%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- 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 · 43 flights
Find American 3172 fares Opens this date on Aviasales
#8 · American 1132
10:36 AM → 6:54 PM5h 18m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
On time (history)
84%
Cancelled
0.0%
Avg arrival delay
12 min
- Arrived on time 84% 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 (9 AM to noon: 71% on time; Before 9 AM: 88%).
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
Limited track record · 44 flights
Find American 1132 fares Opens this date on Aviasales
#9 · American 1384
9:40 PM → 5:52 AM5h 12m nonstop
Local times, typical schedule. Last flown 2026-05-19. Same departure also flew as American 3196; its record covers all of them.
79%
chance on time
On time (history)
84%
Cancelled
0.0%
Avg arrival delay
14 min
- Arrived on time 84% of the time (73 flights, Jun 2025 to May 2026).
- Never cancelled in 73 scheduled flights.
- Departs inside LAX's trouble window: 53% of its 15 ground stops and delay programs started between 4 PM and 10 PM.
Moderate track record · 73 flights
Find American 1384 fares Opens this date on Aviasales
#10 · American 1240
12:06 PM → 8:23 PM5h 17m nonstop
Local times, typical schedule. Last flown 2026-05-20.
78%
chance on time
On time (history)
84%
Cancelled
0.0%
Avg arrival delay
11 min
- Arrived on time 84% of the time (44 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- Departs outside LAX's trouble window (4 PM to 10 PM, when 53% of its 15 ground stops and delay programs started).
- Short track record (44 flights), so its score leans on the airline's record at this hour.
Limited track record · 44 flights
Find American 1240 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

American Airlines78%
2,312 flights · 80% on time as flown · 1.6% cancel
Frontier Airlines56%
107 flights · 43% on time as flown · 2.5% cancel

On time by departure time

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

Before 9 AM88%
536 flights · avg delay 10 min
9 AM to noon71%
458 flights · avg delay 25 min
Noon to 3 PM78%
279 flights · avg delay 17 min
3 to 6 PM73%
377 flights · avg delay 28 min
After 9 PM77%
795 flights · avg delay 16 min

Best day: Tuesday (82%). Worst: Thursday (78%).

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

Late-arriving aircraft48%
Airline (crew, maintenance, boarding)42%
Air traffic control and airport volume10%

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

LAX to PHL questions

What time of day is best to fly LAX to PHL?: Before 9 AM: 88% of flights arrived on time, against 71% 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 LAX to PHL?: American, with a season-adjusted 78% chance of operating and arriving on time over 2,312 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 LAX to PHL?: July (72% on time); the best was February (86%), 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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