Route on-time record
GSO to ORD: most on-time flights and the best time to fly
Greensboro (Piedmont Triad International Airport) to Chicago (Chicago O'Hare International Airport). 1,543 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 3.0% were cancelled. The most reliable flight number was Republic 3426 at 6:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
GSO → ORD
Greensboro to Chicago: 1,543 nonstop flights a year
On time (12 months)
78%
Cancelled
3.0%
avg delay 18 min
Best time to leave
Before 9 AM
88% on time vs 61% 3 to 6 PM
Most reliable airline
Envoy
79% chance on time
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 · Republic 3426 · sold as American Eagle, Delta Connection or United Express
6:15 AM → 7:35 AM2h 20m 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 (20 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
- Short track record (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find 6:15 AM flight fares Opens this date on Aviasales#2 · Envoy 3413 · sold as American Eagle
7:45 AM → 8:59 AM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.8%
- Avg arrival delay
- 11 min
- Arrived on time 88% of the time (327 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
Strong track record · 327 flights
Find 7:45 AM flight fares Opens this date on Aviasales#3 · Envoy 3684 · sold as American Eagle
1:18 PM → 2:36 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (11 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 (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 1:18 PM flight fares Opens this date on Aviasales#4 · SkyWest 4722 · sold as United Express, Delta Connection, American Eagle or Alaska
6:15 AM → 7:34 AM2h 19m nonstop
Local times, typical schedule. Last flown 2026-04-29.
83%
chance on time
- On time (history)
- 85%
- Cancelled
- 3.2%
- Avg arrival delay
- 11 min
- Arrived on time 85% of the time (183 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (6 of 190).
- Leaves in this route's most on-time window (Before 9 AM: 88% on time; 3 to 6 PM: 61%).
Moderate track record · 183 flights
Find 6:15 AM flight fares Opens this date on Aviasales#5 · Envoy 3932 · sold as American Eagle
7:31 PM → 9:05 PM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (11 flights, Jun 2025 to May 2026).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find 7:31 PM flight fares Opens this date on Aviasales#6 · Republic 3428 · sold as American Eagle, Delta Connection or United Express
12:45 PM → 2:11 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 86% of the time (21 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 (21 flights), so its score leans on the airline's record at this hour.
Limited track record · 21 flights
Find 12:45 PM flight fares Opens this date on Aviasales#7 · Envoy 3625 · sold as American Eagle
11:39 AM → 12:58 PM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-20.
76%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 77% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 44 scheduled flights.
- 73% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 11:39 AM flight fares Opens this date on Aviasales#8 · Republic 4361 · sold as American Eagle, Delta Connection or United Express
8:25 PM → 9:45 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-17.
75%
chance on time
- On time (history)
- 88%
- Cancelled
- 11.1%
- Avg arrival delay
- 10 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- 70% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find 8:25 PM flight fares Opens this date on Aviasales#9 · SkyWest 5577 · sold as United Express, Delta Connection, American Eagle or Alaska
1:27 PM → 2:53 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-04-29.
74%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 22 min
- Arrived on time 74% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 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 (31 flights), so its score leans on the airline's record at this hour.
Limited track record · 31 flights
Find 1:27 PM flight fares Opens this date on Aviasales#10 · Envoy 3651 · sold as American Eagle
11:46 AM → 1:03 PM2h 17m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
- On time (history)
- 62%
- Cancelled
- 0.0%
- Avg arrival delay
- 54 min
- Arrived on time 62% of the time (26 flights, Jun 2025 to May 2026).
- Short track record (26 flights), so its score leans on the airline's record at this hour.
Limited track record · 26 flights
Find 11:46 AM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Envoy Air (sold as American Eagle)79%
841 flights · 81% on time as flown · 2.4% cancel
- Republic Airways (sold as American Eagle, Delta Connection or United Express)78%
90 flights · 86% on time as flown · 3.5% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)71%
612 flights · 72% on time as flown · 3.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
574 flights · avg delay 10 min
- 9 AM to noon80%
324 flights · avg delay 19 min
- Noon to 3 PM85%
94 flights · avg delay 14 min
- 3 to 6 PM61%
336 flights · avg delay 32 min
- 6 to 9 PM70%
212 flights · avg delay 18 min
Best day: Tuesday (81%). Worst: Friday (75%).
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.
What delays this route
- Late-arriving aircraft39%
- Air traffic control and airport volume31%
- Airline (crew, maintenance, boarding)24%
- Severe weather6%
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
GSO to ORD questions
- What time of day is best to fly GSO to ORD?
- Before 9 AM: 88% of flights arrived on time, against 61% 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 GSO to ORD?
- Envoy, with a season-adjusted 79% chance of operating and arriving on time over 841 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 GSO to ORD?
- January (70% on time); the best was May (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 GSO
- ORD to GSO (return)
- GSO to ATL 89%
- GSO to LGA 77%
- GSO to CLT 85%
- GSO to DFW 77%
- GSO to DCA 72%
- GSO to MIA 88%
- GSO to DTW 76%
Live status: FAA delays and ground stops