Route on-time record
ORD to ROA: most on-time flights and the best time to fly
Chicago (Chicago O'Hare International Airport) to Roanoke (Roanoke–Blacksburg Regional Airport). 782 nonstop flights in Jun 2025 to May 2026, 69% arrived within 15 minutes and 2.8% were cancelled. The most reliable flight number was SkyWest 5621 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ORD → ROA
Chicago to Roanoke: 782 nonstop flights a year
On time (12 months)
69%
Cancelled
2.8%
avg delay 22 min
Best time to leave
6 to 9 PM
72% on time vs 63% 3 to 6 PM
Most reliable airline
Republic
67% 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 · SkyWest 5621 · sold as United Express, Delta Connection, American Eagle or Alaska
7:00 AM → 9:54 AM1h 54m nonstop
Local times, typical schedule. Last flown 2026-05-18.
71%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 4 min
- Arrived on time 89% of the time (9 flights, Jun 2025 to May 2026).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).
Limited track record · 9 flights
Find 7:00 AM flight fares Opens this date on Aviasales#2 · Republic 4673 · sold as American Eagle, Delta Connection or United Express
9:11 PM → 12:10 AM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 72%
- Cancelled
- 5.5%
- Avg arrival delay
- 25 min
- Arrived on time 72% of the time (102 flights, Jun 2025 to May 2026).
- Cancelled 5.5% of the time (6 of 109).
- Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 102 flights
Find 9:11 PM flight fares Opens this date on Aviasales#3 · SkyWest 5337 · sold as United Express, Delta Connection, American Eagle or Alaska
2:15 PM → 5:21 PM2h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
- On time (history)
- 70%
- Cancelled
- 1.5%
- Avg arrival delay
- 18 min
- Arrived on time 70% of the time (193 flights, Jun 2025 to May 2026).
- Departs inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 193 flights
Find 2:15 PM flight fares Opens this date on Aviasales#4 · SkyWest 5229 · sold as United Express, Delta Connection, American Eagle or Alaska
5:55 PM → 9:01 PM2h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 63% on time; 6 to 9 PM: 72%).
- Departs inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 11 flights
Find 5:55 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)67%
261 flights · 72% on time as flown · 4.4% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)67%
521 flights · 68% on time as flown · 1.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM70%
153 flights · avg delay 20 min
- Noon to 3 PM70%
205 flights · avg delay 20 min
- 3 to 6 PM63%
80 flights · avg delay 38 min
- 6 to 9 PM72%
210 flights · avg delay 14 min
- After 9 PM70%
108 flights · avg delay 32 min
Best day: Wednesday (83%). Worst: Friday (72%).
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 aircraft49%
- Airline (crew, maintenance, boarding)29%
- Air traffic control and airport volume18%
- 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
ORD to ROA questions
- What time of day is best to fly ORD to ROA?
- 6 to 9 PM: 72% of flights arrived on time, against 63% for departures 3 to 6 PM.
- Which airline is most on time from ORD to ROA?
- Republic, with a season-adjusted 67% chance of operating and arriving on time over 261 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 ROA?
- December (64% on time); the best was April (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 ORD
- ROA to ORD (return)
- ORD to LGA 67%
- ORD to BOS 68%
- ORD to LAX 74%
- ORD to DFW 70%
- ORD to DCA 69%
- ORD to MCO 73%
- ORD to ATL 74%
- ORD to MSP 69%
- ORD to DEN 74%
- ORD to IAH 75%
- ORD to EWR 69%
- ORD to DTW 71%
Most on-time flights from ORD on every route →
Live status: FAA delays and ground stops