Route on-time record
ROA to ORD: most on-time flights and the best time to fly
Roanoke (Roanoke–Blacksburg Regional Airport) to Chicago (Chicago O'Hare International Airport). 780 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.6% were cancelled. The most reliable flight number was Republic 4723 at 7:28 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
ROA → ORD
Roanoke to Chicago: 780 nonstop flights a year
On time (12 months)
74%
Cancelled
2.6%
avg delay 27 min
Best time to leave
Before 9 AM
80% on time vs 57% 3 to 6 PM
Most reliable airline
Republic
75% 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 4723 · sold as American Eagle, Delta Connection or United Express
7:28 AM → 8:58 AM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.9%
- Avg arrival delay
- 13 min
- Arrived on time 82% of the time (107 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 57%).
Moderate track record · 107 flights
Find 7:28 AM flight fares Opens this date on Aviasales#2 · SkyWest 5500 · sold as United Express, Delta Connection, American Eagle or Alaska
6:40 AM → 7:50 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 90% of the time (10 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 80% on time; 3 to 6 PM: 57%).
Limited track record · 10 flights
Find 6:40 AM flight fares Opens this date on Aviasales#3 · SkyWest 5776 · sold as United Express, Delta Connection, American Eagle or Alaska
10:51 AM → 12:00 PM2h 09m nonstop
Local times, typical schedule. Last flown 2026-05-15.
76%
chance on time
- On time (history)
- 100%
- Cancelled
- 11.1%
- Avg arrival delay
- 2 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
Limited track record · 8 flights
Find 10:51 AM flight fares Opens this date on Aviasales#4 · SkyWest 5350 · sold as United Express, Delta Connection, American Eagle or Alaska
5:56 PM → 7:05 PM2h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
57%
chance on time
- On time (history)
- 58%
- Cancelled
- 2.2%
- Avg arrival delay
- 35 min
- Arrived on time 58% of the time (182 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 57% on time; Before 9 AM: 80%).
- Lands inside ORD's trouble window: 43% of its 237 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 182 flights
Find 5:56 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)75%
260 flights · 78% on time as flown · 2.4% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)70%
520 flights · 72% on time as flown · 2.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM80%
410 flights · avg delay 19 min
- 9 AM to noon78%
142 flights · avg delay 25 min
- Noon to 3 PM76%
36 flights · avg delay 37 min
- 3 to 6 PM57%
192 flights · avg delay 42 min
Best day: Monday (81%). Worst: Tuesday (73%).
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
- Airline (crew, maintenance, boarding)47%
- Late-arriving aircraft31%
- Air traffic control and airport volume19%
- 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
ROA to ORD questions
- What time of day is best to fly ROA to ORD?
- Before 9 AM: 80% of flights arrived on time, against 57% 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 ROA to ORD?
- Republic, with a season-adjusted 75% chance of operating and arriving on time over 260 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 ROA to ORD?
- December (69% on time); the best was April (84%), 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 ROA
Live status: FAA delays and ground stops