BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ORD→RAP

Chicago, IL (ORD) to Rapid City, SD (RAP) flight delay odds

74.2% of 689 official scheduled ORD-to-RAP flights arrived on time; 14.5% arrived at least 30 minutes late and 2.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
74.2%arrived on time
14.5%30+ min late
2.5%cancelled
689scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.5%all scheduled flights
120+ minutes late2.6%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+7.0 mincompleted flights

Which departure time was most reliable for ORD to RAP?

Among qualifying ORD-to-RAP departure window results, Early morning had the highest on-time rate: 85.5% of 214 flights. Evening was lowest at 53.7% across 108 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning21485.5%9.3%0.5%
Late morning21974.0%12.8%0.9%
Afternoon11876.3%15.3%0.8%
Evening10853.7%24.1%10.2%

Which weekday was most reliable for ORD to RAP?

Among qualifying ORD-to-RAP weekday results, Thursday had the highest on-time rate: 79.6% of 103 flights. Wednesday was lowest at 67.4% across 92 flights.

DayFlightsOn time30+ minCancelled
Monday10370.9%13.6%5.8%
Tuesday9676.0%15.6%1.0%
Wednesday9267.4%18.5%1.1%
Thursday10379.6%8.7%3.9%
Friday9773.2%17.5%3.1%
Saturday9376.3%14.0%2.2%
Sunday10575.2%14.3%0.0%

Which airline was most reliable for ORD to RAP?

Among qualifying ORD-to-RAP airline results, United Airlines had the highest on-time rate: 86.2% of 174 flights. SkyWest Airlines was lowest at 60.7% across 247 flights.

AirlineFlightsOn time30+ minCancelled
Envoy Air26878.7%11.9%0.7%
SkyWest Airlines24760.7%21.1%5.3%
United Airlines17486.2%9.2%1.1%

Which month was most reliable for ORD to RAP?

Among qualifying ORD-to-RAP month results, October 2025 had the highest on-time rate: 84.2% of 38 flights. December 2025 was lowest at 46.7% across 15 flights.

MonthFlightsOn time30+ minCancelled
July 202512166.1%20.7%3.3%
August 202510874.1%16.7%2.8%
September 20257483.8%9.5%1.4%
October 20253884.2%7.9%0.0%
November 20253080.0%6.7%3.3%
December 20251546.7%20.0%0.0%
April 20267164.8%16.9%4.2%
May 202610474.0%13.5%1.9%
June 202612080.0%13.3%1.7%

What drove ORD to RAP delay minutes?

Airline was the largest recorded ORD-to-RAP delay category, accounting for 32.9% of 8,645 BTS-attributed delay minutes during July 2025–June 2026.

Airline32.9%
Late aircraft31.9%
National airspace26.5%
Weather8.7%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.