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Route on-time record

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

Chicago (Chicago O'Hare International Airport) to Greensboro (Piedmont Triad International Airport). 1,545 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 2.6% were cancelled. The most reliable flight number was Republic 3501 at 8:50 AM.

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

ORD → GSO

Chicago to Greensboro: 1,545 nonstop flights a year

On time (12 months)

78%

Cancelled

2.6%

avg delay 15 min

Best time to leave

Before 9 AM

85% on time vs 69% 3 to 6 PM

Most reliable airline

Republic

79% chance on time

Check ORD to GSO fares

Lowest nonstop fare seen in the next two months: $229 (United 4669 on 2026-10-25). 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 3501 · sold as American Eagle, Delta Connection or United Express

    8:50 AM → 11:58 AM2h 08m nonstop

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

    89%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (21 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: 69%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • Short track record (21 flights), so its score leans on the airline's record at this hour.

    Limited track record · 21 flights

    Find 8:50 AM flight fares Opens this date on Aviasales

  2. #2 · Envoy 3625 · sold as American Eagle

    8:05 AM → 11:09 AM2h 04m nonstop

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

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 86% 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; 3 to 6 PM: 69%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Limited track record · 44 flights

    Find 8:05 AM flight fares Opens this date on Aviasales

  3. #3 · Envoy 3651 · sold as American Eagle

    8:15 AM → 11:14 AM1h 59m nonstop

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

    84%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 81% of the time (26 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: 69%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).
    • 56% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 26 flights

    Find 8:15 AM flight fares Opens this date on Aviasales

  4. #4 · Envoy 3932 · sold as American Eagle

    3:56 PM → 7:01 PM2h 05m nonstop

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

    81%

    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 least on-time window (3 to 6 PM: 69% on time; Before 9 AM: 85%).
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find 3:56 PM flight fares Opens this date on Aviasales

  5. #5 · Envoy 3684 · sold as American Eagle

    9:40 AM → 12:48 PM2h 08m nonstop

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

    81%

    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).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 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 9:40 AM flight fares Opens this date on Aviasales

  6. #6 · SkyWest 5422 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:45 AM → 11:53 AM2h 08m nonstop

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

    80%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 81% of the time (31 flights, Jun 2025 to May 2026).
    • Never cancelled in 31 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 69%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Limited track record · 31 flights

    Find 8:45 AM flight fares Opens this date on Aviasales

  7. #7 · SkyWest 5395 · sold as United Express, Delta Connection, American Eagle or Alaska

    1:48 PM → 4:53 PM2h 03m nonstop

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

    78%

    chance on time

    On time (history)
    81%
    Cancelled
    2.4%
    Avg arrival delay
    13 min
    • Arrived on time 81% of the time (325 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 44% of its 243 ground stops and delay programs started).

    Strong track record · 325 flights

    Find 1:48 PM flight fares Opens this date on Aviasales

  8. #8 · Envoy 4191 · sold as American Eagle

    4:41 PM → 7:45 PM2h 04m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as Envoy 3459; its record covers all of them.

    77%

    chance on time

    On time (history)
    74%
    Cancelled
    3.1%
    Avg arrival delay
    20 min
    • Arrived on time 74% of the time (62 flights, Jun 2025 to May 2026).
    • Cancelled 3.1% of the time (2 of 64).
    • Leaves in this route's least on-time window (3 to 6 PM: 69% on time; Before 9 AM: 85%).
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 62 flights

    Find 4:41 PM flight fares Opens this date on Aviasales

  9. #9 · Republic 4572 · sold as American Eagle, Delta Connection or United Express

    4:48 PM → 7:55 PM2h 07m nonstop

    Local times, typical schedule. Last flown 2026-05-17.

    77%

    chance on time

    On time (history)
    75%
    Cancelled
    11.1%
    Avg arrival delay
    12 min
    • Arrived on time 75% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 69% on time; Before 9 AM: 85%).
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • 91% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 8 flights

    Find 4:48 PM flight fares Opens this date on Aviasales

  10. #10 · Envoy 3648 · sold as American Eagle

    6:59 PM → 9:56 PM2h 05m nonstop

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

    76%

    chance on time

    On time (history)
    79%
    Cancelled
    3.2%
    Avg arrival delay
    18 min
    • Arrived on time 79% of the time (330 flights, Jun 2025 to May 2026).
    • Cancelled 3.2% of the time (11 of 342).
    • Departs inside ORD's trouble window: 44% of its 243 ground stops and delay programs started between 2 PM and 8 PM.
    • 61% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 330 flights

    Find 6:59 PM 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)79%

    90 flights · 87% on time as flown · 3.3% cancel

  • Envoy Air (sold as American Eagle)79%

    843 flights · 81% on time as flown · 2.1% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)72%

    612 flights · 73% on time as flown · 3.0% cancel

On time by departure time

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

  • Before 9 AM85%

    344 flights · avg delay 9 min

  • Noon to 3 PM80%

    363 flights · avg delay 14 min

  • 3 to 6 PM69%

    430 flights · avg delay 19 min

  • 6 to 9 PM79%

    366 flights · avg delay 18 min

Best day: Saturday (82%). Worst: Sunday (76%).

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
73
F
77
M
76
A
77
M
81
J
77
J
74
A
81
S
87
O
89
N
84
D
73

What delays this route

  • Late-arriving aircraft43%
  • Airline (crew, maintenance, boarding)24%
  • Air traffic control and airport volume22%
  • Severe weather10%

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

Finding the most reliable connections from ORD to GSO…

ORD to GSO questions

What time of day is best to fly ORD to GSO?
Before 9 AM: 85% of flights arrived on time, against 69% 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 ORD to GSO?
Republic, with a season-adjusted 79% chance of operating and arriving on time over 90 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 ORD to GSO?
December (73% on time); the best was October (89%), 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 ORD

Live status: FAA delays and ground stops