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Route on-time record

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

Philadelphia (Philadelphia International Airport) to Raleigh/Durham (Raleigh-Durham International Airport). 2,521 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.4% were cancelled. The most reliable flight number was Republic 4755 at 10:35 AM.

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

PHL → RDU

Philadelphia to Raleigh/Durham: 2,521 nonstop flights a year

On time (12 months)

74%

Cancelled

2.4%

avg delay 21 min

Best time to leave

Before 9 AM

85% on time vs 65% 3 to 6 PM

Most reliable airline

Frontier

78% chance on time

Check PHL to RDU 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. #1 · Republic 4755 · sold as American Eagle, Delta Connection or United Express

    10:35 AM → 12:15 PM1h 40m nonstop

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

    91%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% 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 RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.

    Limited track record · 44 flights

    Find 10:35 AM flight fares Opens this date on Aviasales

  2. #2 · Frontier 2059

    5:30 AM → 7:05 AM1h 32m nonstop

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

    83%

    chance on time

    On time (history)
    85%
    Cancelled
    1.4%
    Avg arrival delay
    13 min
    • Arrived on time 85% of the time (211 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: 65%).
    • 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 · 211 flights

    Find Frontier 2059 fares Opens this date on Aviasales

  3. #3 · Frontier 4843

    12:17 PM → 1:49 PM1h 32m nonstop

    Local times, typical schedule. Last flown 2026-03-30.

    82%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 84% of the time (19 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).
    • Lands inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
    • Short track record (19 flights), so its score leans on the airline's record at this hour.

    Limited track record · 19 flights

    Find Frontier 4843 fares Opens this date on Aviasales

  4. #4 · PSA 5546 · sold as American Eagle

    7:08 AM → 8:48 AM1h 40m nonstop

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

    82%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    7 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: 85% on time; 3 to 6 PM: 65%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).

    Limited track record · 43 flights

    Find 7:08 AM flight fares Opens this date on Aviasales

  5. #5 · PSA 5638 · sold as American Eagle

    12:55 PM → 2:33 PM1h 38m nonstop

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

    80%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 89% of the time (38 flights, Jun 2025 to May 2026).
    • Never cancelled in 38 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 RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.

    Limited track record · 38 flights

    Find 12:55 PM flight fares Opens this date on Aviasales

  6. #6 · Frontier 1517

    2:31 PM → 3:58 PM1h 30m nonstop

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

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    1.8%
    Avg arrival delay
    15 min
    • Arrived on time 79% of the time (277 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 RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
    • 58% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 277 flights

    Find Frontier 1517 fares Opens this date on Aviasales

  7. #7 · American 2403

    10:54 AM → 12:25 PM1h 31m nonstop

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

    78%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 89% of the time (9 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).
    • Lands inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
    • Short track record (9 flights), so its score leans on the airline's record at this hour.

    Limited track record · 9 flights

    Find American 2403 fares Opens this date on Aviasales

  8. #8 · Republic 4430 · sold as American Eagle, Delta Connection or United Express

    3:20 PM → 5:01 PM1h 41m nonstop

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

    77%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 89% of the time (37 flights, Jun 2025 to May 2026).
    • Never cancelled in 37 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 65% on time; Before 9 AM: 85%).
    • 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 · 37 flights

    Find 3:20 PM flight fares Opens this date on Aviasales

  9. #9 · Republic 4411 · sold as American Eagle, Delta Connection or United Express

    4:49 PM → 6:24 PM1h 35m nonstop

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

    75%

    chance on time

    On time (history)
    88%
    Cancelled
    7.1%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (26 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 65% on time; Before 9 AM: 85%).
    • 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 (26 flights), so its score leans on the airline's record at this hour.

    Limited track record · 26 flights

    Find 4:49 PM flight fares Opens this date on Aviasales

  10. #10 · PSA 5370 · sold as American Eagle

    9:13 AM → 10:49 AM1h 36m nonstop

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

    75%

    chance on time

    On time (history)
    79%
    Cancelled
    1.4%
    Avg arrival delay
    11 min
    • Arrived on time 79% of the time (68 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 · 68 flights

    Find 9:13 AM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines78%

    565 flights · 81% on time as flown · 2.3% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)77%

    211 flights · 83% on time as flown · 2.9% cancel

  • PSA Airlines (sold as American Eagle)70%

    611 flights · 73% on time as flown · 2.6% cancel

  • American Airlines70%

    1,134 flights · 70% on time as flown · 2.2% cancel

On time by departure time

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

  • Before 9 AM85%

    382 flights · avg delay 10 min

  • 9 AM to noon78%

    550 flights · avg delay 21 min

  • Noon to 3 PM76%

    552 flights · avg delay 21 min

  • 3 to 6 PM65%

    423 flights · avg delay 31 min

  • 6 to 9 PM68%

    405 flights · avg delay 23 min

  • After 9 PM73%

    209 flights · avg delay 19 min

Best day: Wednesday (80%). 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.

J
74
F
78
M
78
A
81
M
78
J
69
J
60
A
65
S
78
O
79
N
82
D
74

What delays this route

  • Late-arriving aircraft57%
  • Airline (crew, maintenance, boarding)27%
  • Air traffic control and airport volume12%
  • 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

PHL to RDU questions

What time of day is best to fly PHL to RDU?
Before 9 AM: 85% of flights arrived on time, against 65% 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 PHL to RDU?
Frontier, with a season-adjusted 78% chance of operating and arriving on time over 565 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 RDU?
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.

More routes from PHL

Live status: FAA delays and ground stops