Chicago (ORD) to Rapid City (RAP): On-Time Performance
Data through July 2026
When you fly ORD to RAP matters as much as anything else about the booking: the route swung from 90% on-time in September 2024 to just 67% in June 2025. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 60%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 1.9
- last 12 months
- Duration
- 2h 34m
- scheduled
- Distance
- 780 mi
Best airline from ORD to RAP
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 87% | 10 min | 1.0% | 393 |
| Envoy Air | 82% | 10 min | 0.4% | 478 |
| SkyWest Airlines | 66% | 20 min | 4.0% | 421 |
Monthly on-time trend
Best time to fly from ORD to RAP
Aim for departures around 1 p.m. (87% on-time); avoid 8 p.m. departures (55%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 11 min |
| Tuesday | 82% | 10 min |
| Wednesday | 76% | 17 min |
| Thursday | 79% | 12 min |
| Friday | 74% | 14 min |
| Saturdaybest | 83% | 12 min |
| Sunday | 80% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations35%
- National airspace system25%
- Weather7%
Frequently asked questions
- How often are flights from ORD to RAP delayed?
- 21% of ORD–RAP flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from ORD to RAP?
- United Airlines has the best on-time record on this route at 87%, based on 393 flights. 3 airlines flew ORD–RAP frequently enough to compare in this period.
- What is the best time of day to fly from ORD to RAP?
- Departures around 1 p.m. have the best record (87% on-time), while departures around 8 p.m. have the worst (55%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to RAP?
- The scheduled ORD–RAP flight time averages 2h 34m over 780 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are ORD to RAP flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from ORD to RAP?
- June 2025 was the roughest month in this dataset, with only 67% of arrivals on time. The best was September 2024 at 90%. If your dates are flexible, that 23-point gap is worth planning around.
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Based on 1,323 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.