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Route on-time record

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

Philadelphia (Philadelphia International Airport) to Chicago (Chicago O'Hare International Airport). 4,812 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 3.1% were cancelled. The most reliable flight number was American 2006 at 6:00 AM.

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

PHL → ORD

Philadelphia to Chicago: 4,812 nonstop flights a year

On time (12 months)

72%

Cancelled

3.1%

avg delay 28 min

Best time to leave

Before 9 AM

83% on time vs 54% 6 to 9 PM

Most reliable airline

United

72% chance on time

Check PHL to ORD fares

Lowest nonstop fare seen in the next two months: $94 (Frontier 2111 on 2026-10-17). 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 2006

    6:00 AM → 7:39 AM2h 39m nonstop

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

    86%

    chance on time

    On time (history)
    98%
    Cancelled
    9.1%
    Avg arrival delay
    6 min
    • Arrived on time 98% of the time (40 flights, Jun 2025 to May 2026).
    • Cancelled 9.1% of the time (4 of 44).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • 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 · 40 flights

    Find American 2006 fares Opens this date on Aviasales

  2. #2 · American 3074

    7:36 AM → 9:08 AM2h 32m nonstop

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

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    4.3%
    Avg arrival delay
    14 min
    • Arrived on time 87% of the time (132 flights, Jun 2025 to May 2026).
    • Cancelled 4.3% of the time (6 of 138).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • 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 · 132 flights

    Find American 3074 fares Opens this date on Aviasales

  3. #3 · American 1049

    10:40 AM → 12:18 PM2h 38m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 955; its record covers all of them.

    81%

    chance on time

    On time (history)
    88%
    Cancelled
    4.1%
    Avg arrival delay
    14 min
    • Arrived on time 88% of the time (69 flights, Jun 2025 to May 2026).
    • Cancelled 4.1% of the time (3 of 73).
    • 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 · 69 flights

    Find American 1049 fares Opens this date on Aviasales

  4. #4 · United 660

    6:10 AM → 7:39 AM2h 29m nonstop

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

    81%

    chance on time

    On time (history)
    85%
    Cancelled
    4.5%
    Avg arrival delay
    6 min
    • Arrived on time 85% of the time (85 flights, Jun 2025 to May 2026).
    • Cancelled 4.5% of the time (4 of 89).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • 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 · 85 flights

    Find United 660 fares Opens this date on Aviasales

  5. #5 · United 1811

    10:00 AM → 11:28 AM2h 29m nonstop

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

    81%

    chance on time

    On time (history)
    86%
    Cancelled
    3.4%
    Avg arrival delay
    12 min
    • Arrived on time 86% of the time (140 flights, Jun 2025 to May 2026).
    • Cancelled 3.4% of the time (5 of 146).
    • 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 · 140 flights

    Find United 1811 fares Opens this date on Aviasales

  6. #6 · American 3313

    9:02 AM → 10:41 AM2h 39m nonstop

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

    80%

    chance on time

    On time (history)
    82%
    Cancelled
    0.6%
    Avg arrival delay
    29 min
    • Arrived on time 82% of the time (164 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).
    • 64% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 164 flights

    Find American 3313 fares Opens this date on Aviasales

  7. #7 · United 321

    6:30 AM → 8:00 AM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    77%

    chance on time

    On time (history)
    68%
    Cancelled
    2.8%
    Avg arrival delay
    12 min
    • Arrived on time 68% of the time (34 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Short track record (34 flights), so its score leans on the airline's record at this hour.

    Limited track record · 34 flights

    Find United 321 fares Opens this date on Aviasales

  8. #8 · American 2095

    7:15 AM → 8:54 AM2h 39m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 1885; its record covers all of them.

    76%

    chance on time

    On time (history)
    78%
    Cancelled
    2.3%
    Avg arrival delay
    16 min
    • Arrived on time 78% of the time (257 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • 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 · 257 flights

    Find American 2095 fares Opens this date on Aviasales

  9. #9 · American 1041

    10:30 AM → 12:07 PM2h 37m nonstop

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

    74%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    16 min
    • Arrived on time 73% of the time (11 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).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 1041 fares Opens this date on Aviasales

  10. #10 · United 1834

    8:00 AM → 9:33 AM2h 33m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    74%

    chance on time

    On time (history)
    74%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 74% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 83% on time; 6 to 9 PM: 54%).
    • Departs outside PHL's trouble window (2 PM to 8 PM, when 72% of its 95 ground stops and delay programs started).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find United 1834 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines72%

    1,715 flights · 73% on time as flown · 1.9% cancel

  • American Airlines70%

    2,890 flights · 72% on time as flown · 3.8% cancel

  • Frontier Airlines59%

    183 flights · 57% on time as flown · 3.5% cancel

On time by departure time

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

  • Before 9 AM83%

    1,174 flights · avg delay 16 min

  • 9 AM to noon81%

    904 flights · avg delay 23 min

  • Noon to 3 PM76%

    898 flights · avg delay 25 min

  • 3 to 6 PM61%

    983 flights · avg delay 37 min

  • 6 to 9 PM54%

    623 flights · avg delay 48 min

  • After 9 PM61%

    230 flights · avg delay 33 min

Best day: Tuesday (82%). Worst: Friday (74%).

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
77
F
85
M
81
A
80
M
76
J
70
J
67
A
73
S
83
O
84
N
81
D
78

What delays this route

  • Late-arriving aircraft39%
  • Air traffic control and airport volume35%
  • Airline (crew, maintenance, boarding)23%
  • 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 ORD questions

What time of day is best to fly PHL to ORD?
Before 9 AM: 83% of flights arrived on time, against 54% 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 ORD?
United, with a season-adjusted 72% chance of operating and arriving on time over 1,715 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 ORD?
July (67% on time); the best was February (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

Live status: FAA delays and ground stops