Route on-time record

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

Atlanta (Hartsfield Jackson Atlanta International Airport) to Philadelphia (Philadelphia International Airport). 5,683 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 3.0% were cancelled. The most reliable flight number was PSA 5348 at 6:10 AM.

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

ATL → PHL

Atlanta to Philadelphia: 5,683 nonstop flights a year

On time (12 months)

73%

Cancelled

3.0%

avg delay 21 min

Best time to leave

Before 9 AM

87% on time vs 61% 3 to 6 PM

Most reliable airline

Republic

81% chance on time

Check ATL to PHL fares

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 · PSA 5348 · sold as American Eagle
6:10 AM → 8:19 AM2h 09m nonstop
Local times, typical schedule. Last flown 2026-05-20.
93%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
0 min
- Arrived on time 100% 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: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Limited track record · 44 flights
Find 6:10 AM flight fares Opens this date on Aviasales
#2 · PSA 5340 · sold as American Eagle
6:00 AM → 8:09 AM2h 09m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
On time (history)
96%
Cancelled
9.4%
Avg arrival delay
5 min
- Arrived on time 96% of the time (47 flights, Jun 2025 to May 2026).
- Cancelled 9.4% of the time (5 of 53).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Limited track record · 47 flights
Find 6:00 AM flight fares Opens this date on Aviasales
#3 · American 3270
6:00 AM → 8:11 AM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find American 3270 fares Opens this date on Aviasales
#4 · American 1428
7:15 AM → 9:26 AM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
On time (history)
90%
Cancelled
3.1%
Avg arrival delay
14 min
- Arrived on time 90% of the time (155 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (5 of 160).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Moderate track record · 155 flights
Find American 1428 fares Opens this date on Aviasales
#5 · American 3222
7:32 AM → 9:40 AM2h 08m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
74 min
- Arrived on time 91% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Limited track record · 43 flights
Find American 3222 fares Opens this date on Aviasales
#6 · Republic 4338 · sold as American Eagle, Delta Connection or United Express
12:25 PM → 2:36 PM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
On time (history)
89%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 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.
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find 12:25 PM flight fares Opens this date on Aviasales
#7 · PSA 5168 · sold as American Eagle
1:29 PM → 3:41 PM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-20.
84%
chance on time
On time (history)
91%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 91% of the time (34 flights, Jun 2025 to May 2026).
- Never cancelled in 34 scheduled flights.
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 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 · 34 flights
Find 1:29 PM flight fares Opens this date on Aviasales
#8 · Delta 2270
9:44 AM → 11:42 AM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
85%
Cancelled
3.1%
Avg arrival delay
8 min
- Arrived on time 85% of the time (340 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (11 of 351).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 340 flights
Find Delta 2270 fares Opens this date on Aviasales
#9 · Delta 2153
7:30 AM → 9:25 AM1h 57m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1100; its record covers all of them.
82%
chance on time
On time (history)
85%
Cancelled
3.4%
Avg arrival delay
8 min
- Arrived on time 85% of the time (284 flights, Jun 2025 to May 2026).
- Cancelled 3.4% of the time (10 of 294).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 3 to 6 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 284 flights
Find Delta 2153 fares Opens this date on Aviasales
#10 · PSA 5037 · sold as American Eagle
9:50 AM → 11:59 AM2h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
89%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find 9:50 AM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Republic Airways (sold as American Eagle, Delta Connection or United Express)81%
134 flights · 89% on time as flown · 4.0% cancel
PSA Airlines (sold as American Eagle)77%
872 flights · 81% on time as flown · 4.2% cancel
American Airlines73%
547 flights · 74% on time as flown · 2.2% cancel
Delta Air Lines72%
3,040 flights · 74% on time as flown · 2.5% cancel
Spirit Airlines63%
114 flights · 57% on time as flown · 2.4% cancel
Frontier Airlines59%
976 flights · 60% on time as flown · 3.4% cancel

On time by departure time

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

Before 9 AM87%
991 flights · avg delay 14 min
9 AM to noon82%
1,184 flights · avg delay 15 min
Noon to 3 PM80%
775 flights · avg delay 13 min
3 to 6 PM61%
1,164 flights · avg delay 29 min
6 to 9 PM63%
906 flights · avg delay 28 min
After 9 PM62%
663 flights · avg delay 30 min

Best day: Wednesday (80%). Worst: Sunday (70%).

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 aircraft45%
Airline (crew, maintenance, boarding)34%
Air traffic control and airport volume17%
Severe weather4%

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

ATL to PHL questions

What time of day is best to fly ATL to PHL?: Before 9 AM: 87% of flights arrived on time, against 61% 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 ATL to PHL?: Republic, with a season-adjusted 81% chance of operating and arriving on time over 134 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 ATL to PHL?: July (60% on time); the best was November (82%), 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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