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Route on-time record

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

Charleston (Charleston International Airport) to Chicago (Chicago O'Hare International Airport). 2,057 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 2.2% were cancelled. The most reliable flight number was Envoy 3571 at 7:10 AM.

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

CHS → ORD

Charleston to Chicago: 2,057 nonstop flights a year

On time (12 months)

77%

Cancelled

2.2%

avg delay 18 min

Best time to leave

9 AM to noon

89% on time vs 61% 6 to 9 PM

Most reliable airline

American

78% chance on time

Check CHS to ORD 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 · Envoy 3571 · sold as American Eagle

    7:10 AM → 8:56 AM2h 46m nonstop

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

    88%

    chance on time

    On time (history)
    96%
    Cancelled
    4.0%
    Avg arrival delay
    1 min
    • Arrived on time 96% of the time (24 flights, Jun 2025 to May 2026).
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find 7:10 AM flight fares Opens this date on Aviasales

  2. #2 · American 2014

    7:07 AM → 8:47 AM2h 40m nonstop

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

    88%

    chance on time

    On time (history)
    93%
    Cancelled
    4.7%
    Avg arrival delay
    8 min
    • Arrived on time 93% of the time (41 flights, Jun 2025 to May 2026).
    • Cancelled 4.7% of the time (2 of 43).
    • Short track record (41 flights), so its score leans on the airline's record at this hour.

    Limited track record · 41 flights

    Find American 2014 fares Opens this date on Aviasales

  3. #3 · United 592

    11:31 AM → 1:09 PM2h 38m nonstop

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

    86%

    chance on time

    On time (history)
    88%
    Cancelled
    0.9%
    Avg arrival delay
    10 min
    • Arrived on time 88% of the time (211 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 89% on time; 6 to 9 PM: 61%).

    Strong track record · 211 flights

    Find United 592 fares Opens this date on Aviasales

  4. #4 · United 2333

    6:00 AM → 7:36 AM2h 35m nonstop

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

    84%

    chance on time

    On time (history)
    86%
    Cancelled
    1.5%
    Avg arrival delay
    10 min
    • Arrived on time 86% of the time (194 flights, Jun 2025 to May 2026).

    Moderate track record · 194 flights

    Find United 2333 fares Opens this date on Aviasales

  5. #5 · United 1057

    9:40 AM → 11:16 AM2h 36m nonstop

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

    82%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 89% on time; 6 to 9 PM: 61%).
    • Short track record (9 flights), so its score leans on the airline's record at this hour.

    Limited track record · 9 flights

    Find United 1057 fares Opens this date on Aviasales

  6. #6 · American 3027

    8:25 AM → 9:58 AM2h 33m nonstop

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

    81%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
    • Short track record (10 flights), so its score leans on the airline's record at this hour.

    Limited track record · 10 flights

    Find American 3027 fares Opens this date on Aviasales

  7. #7 · United 1585

    1:19 PM → 2:55 PM2h 36m nonstop

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

    80%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 88% of the time (17 flights, Jun 2025 to May 2026).
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (17 flights), so its score leans on the airline's record at this hour.

    Limited track record · 17 flights

    Find United 1585 fares Opens this date on Aviasales

  8. #8 · American 2991

    12:29 PM → 2:05 PM2h 36m nonstop

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

    78%

    chance on time

    On time (history)
    78%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 78% of the time (40 flights, Jun 2025 to May 2026).
    • Never cancelled in 40 scheduled flights.
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (40 flights), so its score leans on the airline's record at this hour.

    Limited track record · 40 flights

    Find American 2991 fares Opens this date on Aviasales

  9. #9 · Republic 3441 · sold as American Eagle, Delta Connection or United Express

    1:10 PM → 2:55 PM2h 45m nonstop

    Local times, typical schedule. Last flown 2026-04-29.

    77%

    chance on time

    On time (history)
    79%
    Cancelled
    1.4%
    Avg arrival delay
    15 min
    • Arrived on time 79% of the time (70 flights, Jun 2025 to May 2026).
    • Lands inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • 60% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 70 flights

    Find 1:10 PM flight fares Opens this date on Aviasales

  10. #10 · American 2452

    12:21 PM → 1:54 PM2h 33m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as American 2252; its record covers all of them.

    76%

    chance on time

    On time (history)
    72%
    Cancelled
    2.9%
    Avg arrival delay
    85 min
    • Arrived on time 72% of the time (32 flights, Jun 2025 to May 2026).
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find American 2452 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • American Airlines78%

    187 flights · 80% on time as flown · 1.9% cancel

  • Envoy Air (sold as American Eagle)78%

    591 flights · 80% on time as flown · 2.3% cancel

  • United Airlines76%

    741 flights · 78% on time as flown · 2.1% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)74%

    63 flights · 73% on time as flown · 2.9% cancel

  • Republic Airways (sold as American Eagle, Delta Connection or United Express)71%

    474 flights · 72% on time as flown · 2.1% cancel

On time by departure time

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

  • Before 9 AM86%

    545 flights · avg delay 13 min

  • 9 AM to noon89%

    333 flights · avg delay 10 min

  • Noon to 3 PM80%

    454 flights · avg delay 20 min

  • 3 to 6 PM65%

    429 flights · avg delay 24 min

  • 6 to 9 PM61%

    293 flights · avg delay 27 min

Best day: Tuesday (85%). Worst: Sunday (78%).

Smarter routing

Nearby airports that run more on time

  • CHS → MDW 84% chance on time

    Charleston International Airport to Chicago Midway International Airport · 346 flights a year · 15 mi from your airports · yours: 75%

    Rank flightsFares

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
81
F
83
M
80
A
78
M
77
J
86
J
76
A
83
S
87
O
88
N
84
D
82

What delays this route

  • Air traffic control and airport volume40%
  • Late-arriving aircraft32%
  • Airline (crew, maintenance, boarding)25%
  • Severe weather3%

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

CHS to ORD questions

What time of day is best to fly CHS to ORD?
9 AM to noon: 89% of flights arrived on time, against 61% for departures 6 to 9 PM.
Which airline is most on time from CHS to ORD?
American, with a season-adjusted 78% chance of operating and arriving on time over 187 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 CHS to ORD?
July (76% on time); the best was October (88%), 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 CHS

Live status: FAA delays and ground stops