Route on-time record
RAP to ORD: most on-time flights and the best time to fly
Rapid City (Rapid City Regional Airport) to Chicago (Chicago O'Hare International Airport). 685 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was United 1623 at 1:35 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
RAP → ORD
Rapid City to Chicago: 685 nonstop flights a year
On time (12 months)
71%
Cancelled
1.6%
avg delay 20 min
Best time to leave
Before 9 AM
77% on time vs 52% 6 to 9 PM
Most reliable airline
United
74% 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 · United 1623
1:35 PM → 4:59 PM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 82%
- Cancelled
- 0.0%
- Avg arrival delay
- 27 min
- Arrived on time 82% 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.
- 77% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 1623 fares Opens this date on Aviasales#2 · Envoy 3767 · sold as American Eagle
3:23 PM → 6:57 PM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 0 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 3:23 PM flight fares Opens this date on Aviasales#3 · Envoy 4040 · sold as American Eagle
11:53 AM → 3:20 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-20.
74%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 79% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 44 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 (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find 11:53 AM flight fares Opens this date on Aviasales#4 · United 1193
11:40 AM → 2:53 PM2h 13m nonstop
Local times, typical schedule. Last flown 2026-04-27.
74%
chance on time
- On time (history)
- 67%
- Cancelled
- 6.3%
- Avg arrival delay
- 28 min
- Arrived on time 67% of the time (15 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 (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find United 1193 fares Opens this date on Aviasales#5 · Envoy 3908 · sold as American Eagle
12:47 PM → 4:17 PM2h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
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).
- 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 12:47 PM flight fares Opens this date on Aviasales#6 · SkyWest 5779 · sold as United Express, Delta Connection, American Eagle or Alaska
12:05 PM → 3:31 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-20.
69%
chance on time
- On time (history)
- 76%
- Cancelled
- 0.0%
- Avg arrival delay
- 17 min
- Arrived on time 76% 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 12:05 PM flight fares Opens this date on Aviasales#7 · SkyWest 5811 · sold as United Express, Delta Connection, American Eagle or Alaska
6:00 AM → 9:34 AM2h 34m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 56%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 56% of the time (9 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 77% on time; 6 to 9 PM: 52%).
- 56% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (9 flights), so its score leans on the airline's record at this hour.
Limited track record · 9 flights
Find 6:00 AM flight fares Opens this date on Aviasales#8 · SkyWest 5304 · sold as United Express, Delta Connection, American Eagle or Alaska
9:20 AM → 12:45 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-29.
61%
chance on time
- On time (history)
- 55%
- Cancelled
- 6.5%
- Avg arrival delay
- 56 min
- Arrived on time 55% of the time (29 flights, Jun 2025 to May 2026).
- Cancelled 6.5% of the time (2 of 31).
- Short track record (29 flights), so its score leans on the airline's record at this hour.
Limited track record · 29 flights
Find 9:20 AM flight fares Opens this date on Aviasales#9 · SkyWest 5500 · sold as United Express, Delta Connection, American Eagle or Alaska
9:30 AM → 12:56 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-20.
61%
chance on time
- On time (history)
- 58%
- Cancelled
- 9.5%
- Avg arrival delay
- 21 min
- Arrived on time 58% of the time (19 flights, Jun 2025 to May 2026).
- Short track record (19 flights), so its score leans on the airline's record at this hour.
Limited track record · 19 flights
Find 9:30 AM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines74%
179 flights · 76% on time as flown · 1.3% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)70%
242 flights · 71% on time as flown · 2.1% cancel
- Envoy Air (sold as American Eagle)68%
264 flights · 68% on time as flown · 1.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM77%
90 flights · avg delay 13 min
- 9 AM to noon68%
117 flights · avg delay 28 min
- Noon to 3 PM75%
368 flights · avg delay 18 min
- 6 to 9 PM52%
96 flights · avg delay 31 min
Best day: Saturday (79%). Worst: Sunday (70%).
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 aircraft34%
- Air traffic control and airport volume30%
- Airline (crew, maintenance, boarding)28%
- Severe weather8%
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
RAP to ORD questions
- What time of day is best to fly RAP to ORD?
- Before 9 AM: 77% of flights arrived on time, against 52% for departures 6 to 9 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 RAP to ORD?
- United, with a season-adjusted 74% chance of operating and arriving on time over 179 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 RAP to ORD?
- July (64% on time); the best was September (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 RAP
Live status: FAA delays and ground stops