Skip to content

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

Route on-time record

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

Raleigh/Durham (Raleigh-Durham International Airport) to Philadelphia (Philadelphia International Airport). 2,524 nonstop flights in Jun 2025 to May 2026, 73% arrived within 15 minutes and 3.2% were cancelled. The most reliable flight number was American 2686 at 6:00 AM.

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

RDU → PHL

Raleigh/Durham to Philadelphia: 2,524 nonstop flights a year

On time (12 months)

73%

Cancelled

3.2%

avg delay 27 min

Best time to leave

Before 9 AM

85% on time vs 60% 6 to 9 PM

Most reliable airline

Republic

77% chance on time

Check RDU to PHL fares

Lowest nonstop fare seen in the next two months: $79 (Frontier 2072 on 2026-11-10). 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 2686

    6:00 AM → 7:28 AM1h 28m nonstop

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

    85%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    22 min
    • Arrived on time 91% 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: 85% on time; 6 to 9 PM: 60%).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).

    Limited track record · 44 flights

    Find American 2686 fares Opens this date on Aviasales

  2. #2 · Republic 4755 · sold as American Eagle, Delta Connection or United Express

    12:49 PM → 2:29 PM1h 40m nonstop

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

    81%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 89% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 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 · 44 flights

    Find 12:49 PM flight fares Opens this date on Aviasales

  3. #3 · Republic 4428 · sold as American Eagle, Delta Connection or United Express

    5:31 PM → 7:14 PM1h 43m nonstop

    Local times, typical schedule. Last flown 2026-05-19.

    80%

    chance on time

    On time (history)
    92%
    Cancelled
    2.7%
    Avg arrival delay
    7 min
    • Arrived on time 92% of the time (36 flights, Jun 2025 to May 2026).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 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 (36 flights), so its score leans on the airline's record at this hour.

    Limited track record · 36 flights

    Find 5:31 PM flight fares Opens this date on Aviasales

  4. #4 · Frontier 2060

    8:00 AM → 9:33 AM1h 33m nonstop

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

    78%

    chance on time

    On time (history)
    81%
    Cancelled
    1.4%
    Avg arrival delay
    15 min
    • Arrived on time 81% of the time (216 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 60%).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
    • 67% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 216 flights

    Find Frontier 2060 fares Opens this date on Aviasales

  5. #5 · American 1526

    8:00 AM → 9:30 AM1h 30m nonstop

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

    77%

    chance on time

    On time (history)
    88%
    Cancelled
    3.8%
    Avg arrival delay
    7 min
    • Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 60%).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
    • Short track record (25 flights), so its score leans on the airline's record at this hour.

    Limited track record · 25 flights

    Find American 1526 fares Opens this date on Aviasales

  6. #6 · PSA 5663 · sold as American Eagle

    10:20 AM → 11:55 AM1h 35m nonstop

    Local times, typical schedule. Last flown 2026-05-24.

    76%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 84% of the time (45 flights, Jun 2025 to May 2026).
    • Never cancelled in 45 scheduled flights.
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).
    • 74% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 45 flights

    Find 10:20 AM flight fares Opens this date on Aviasales

  7. #7 · American 1115

    7:30 AM → 9:01 AM1h 31m nonstop

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

    73%

    chance on time

    On time (history)
    72%
    Cancelled
    3.4%
    Avg arrival delay
    15 min
    • Arrived on time 72% of the time (115 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (4 of 119).
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 6 to 9 PM: 60%).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).

    Moderate track record · 115 flights

    Find American 1115 fares Opens this date on Aviasales

  8. #8 · Republic 4411 · sold as American Eagle, Delta Connection or United Express

    6:53 PM → 8:34 PM1h 41m nonstop

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

    73%

    chance on time

    On time (history)
    84%
    Cancelled
    5.6%
    Avg arrival delay
    9 min
    • Arrived on time 84% of the time (51 flights, Jun 2025 to May 2026).
    • Cancelled 5.6% of the time (3 of 54).
    • Leaves in this route's least on-time window (6 to 9 PM: 60% on time; Before 9 AM: 85%).
    • Departs outside RDU's trouble window (11 AM to 5 PM, when 57% of its 14 ground stops and delay programs started).

    Limited track record · 51 flights

    Find 6:53 PM flight fares Opens this date on Aviasales

  9. #9 · PSA 5638 · sold as American Eagle

    3:06 PM → 4:44 PM1h 38m nonstop

    Local times, typical schedule. Last flown 2026-05-19.

    71%

    chance on time

    On time (history)
    84%
    Cancelled
    2.6%
    Avg arrival delay
    13 min
    • Arrived on time 84% of the time (37 flights, Jun 2025 to May 2026).
    • Departs inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
    • Lands inside PHL's trouble window: 72% of its 95 ground stops and delay programs started between 2 PM and 8 PM.
    • 79% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 37 flights

    Find 3:06 PM flight fares Opens this date on Aviasales

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

    11:20 AM → 12:54 PM1h 34m nonstop

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

    70%

    chance on time

    On time (history)
    78%
    Cancelled
    2.2%
    Avg arrival delay
    12 min
    • Arrived on time 78% of the time (45 flights, Jun 2025 to May 2026).
    • Departs inside RDU's trouble window: 57% of its 14 ground stops and delay programs started between 11 AM and 5 PM.
    • 66% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (45 flights), so its score leans on the airline's record at this hour.

    Limited track record · 45 flights

    Find 11:20 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)77%

    212 flights · 85% on time as flown · 3.6% cancel

  • American Airlines71%

    1,135 flights · 71% on time as flown · 2.3% cancel

  • Frontier Airlines71%

    566 flights · 74% on time as flown · 4.3% cancel

  • PSA Airlines (sold as American Eagle)66%

    611 flights · 70% on time as flown · 3.7% cancel

On time by departure time

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

  • Before 9 AM85%

    674 flights · avg delay 16 min

  • 9 AM to noon79%

    452 flights · avg delay 19 min

  • Noon to 3 PM73%

    336 flights · avg delay 20 min

  • 3 to 6 PM63%

    560 flights · avg delay 37 min

  • 6 to 9 PM60%

    440 flights · avg delay 46 min

Best day: Tuesday (78%). Worst: Friday (71%).

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
79
F
80
M
77
A
78
M
75
J
69
J
61
A
65
S
73
O
77
N
79
D
73

What delays this route

  • Late-arriving aircraft61%
  • Airline (crew, maintenance, boarding)21%
  • Air traffic control and airport volume13%
  • Severe weather5%

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

RDU to PHL questions

What time of day is best to fly RDU to PHL?
Before 9 AM: 85% of flights arrived on time, against 60% 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 RDU to PHL?
Republic, with a season-adjusted 77% chance of operating and arriving on time over 212 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 RDU to PHL?
July (61% on time); the best was February (80%), 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 RDU

Live status: FAA delays and ground stops