Route on-time record
DEN to RAP: most on-time flights and the best time to fly
Denver (Denver International Airport) to Rapid City (Rapid City Regional Airport). 2,908 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was SkyWest 5927 at 8:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → RAP
Denver to Rapid City: 2,908 nonstop flights a year
On time (12 months)
78%
Cancelled
1.2%
avg delay 17 min
Best time to leave
Before 9 AM
87% on time vs 72% 6 to 9 PM
Most reliable airline
SkyWest
77% chance on time
Lowest nonstop fare seen in the next two months: $231 (United 1585 on 2026-10-21). 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 5927 · sold as United Express, Delta Connection, American Eagle or Alaska
8:00 AM → 9:23 AM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 87%
- Cancelled
- 2.4%
- Avg arrival delay
- 8 min
- Arrived on time 87% of the time (204 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 72%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 204 flights
Find 8:00 AM flight fares Opens this date on Aviasales#2 · SkyWest 5403 · sold as United Express, Delta Connection, American Eagle or Alaska
7:45 AM → 9:10 AM1h 25m nonstop
Local times, typical schedule. Last flown 2026-03-27.
84%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 43 min
- Arrived on time 85% of the time (13 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 72%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 85% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 13 flights
Find 7:45 AM flight fares Opens this date on Aviasales#3 · United 494
11:55 AM → 1:08 PM1h 13m nonstop
Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 451; its record covers all of them.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 81% of the time (135 flights, Jun 2025 to May 2026).
- Never cancelled in 135 scheduled flights.
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Moderate track record · 135 flights
Find United 494 fares Opens this date on Aviasales#4 · SkyWest 4674 · sold as United Express, Delta Connection, American Eagle or Alaska
10:05 AM → 11:24 AM1h 30m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 84%
- Cancelled
- 1.8%
- Avg arrival delay
- 11 min
- Arrived on time 84% of the time (274 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 274 flights
Find 10:05 AM flight fares Opens this date on Aviasales#5 · United 1623
11:15 AM → 12:29 PM1h 14m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.0%
- Avg arrival delay
- 29 min
- Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- 71% 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#6 · SkyWest 4788 · sold as United Express, Delta Connection, American Eagle or Alaska
4:35 PM → 6:00 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-04-29.
78%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.0%
- Avg arrival delay
- 24 min
- Arrived on time 81% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 32 flights
Find 4:35 PM flight fares Opens this date on Aviasales#7 · SkyWest 5556 · sold as United Express, Delta Connection, American Eagle or Alaska
1:26 PM → 2:51 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 79%
- Cancelled
- 1.7%
- Avg arrival delay
- 15 min
- Arrived on time 79% of the time (285 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 285 flights
Find 1:26 PM flight fares Opens this date on Aviasales#8 · SkyWest 5303 · sold as United Express, Delta Connection, American Eagle or Alaska
8:35 PM → 9:57 PM1h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.3%
- Avg arrival delay
- 23 min
- Arrived on time 77% of the time (335 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 72% on time; Before 9 AM: 87%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
Strong track record · 335 flights
Find 8:35 PM flight fares Opens this date on Aviasales#9 · SkyWest 5265 · sold as United Express, Delta Connection, American Eagle or Alaska
3:50 PM → 5:11 PM1h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
76%
chance on time
- On time (history)
- 78%
- Cancelled
- 1.4%
- Avg arrival delay
- 17 min
- Arrived on time 78% of the time (278 flights, Jun 2025 to May 2026).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 278 flights
Find 3:50 PM flight fares Opens this date on Aviasales#10 · United 535
7:30 PM → 8:44 PM1h 14m nonstop
Local times, typical schedule. Last flown 2026-04-29.
74%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.9%
- Avg arrival delay
- 15 min
- Arrived on time 77% of the time (113 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 72% on time; Before 9 AM: 87%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 113 flights
Find United 535 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)77%
2,170 flights · 78% on time as flown · 1.5% cancel
- United Airlines76%
738 flights · 76% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM87%
224 flights · avg delay 10 min
- 9 AM to noon83%
722 flights · avg delay 10 min
- Noon to 3 PM77%
532 flights · avg delay 14 min
- 3 to 6 PM74%
711 flights · avg delay 23 min
- 6 to 9 PM72%
646 flights · avg delay 23 min
Best day: Tuesday (81%). Worst: Friday (76%).
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 aircraft41%
- Airline (crew, maintenance, boarding)37%
- Air traffic control and airport volume17%
- Severe weather5%
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
DEN to RAP questions
- What time of day is best to fly DEN to RAP?
- Before 9 AM: 87% of flights arrived on time, against 72% 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 DEN to RAP?
- SkyWest, with a season-adjusted 77% chance of operating and arriving on time over 2,170 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 DEN to RAP?
- June (67% on time); the best was October (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 DEN
- RAP to DEN (return)
- DEN to PHX 75%
- DEN to SLC 77%
- DEN to LAX 79%
- DEN to LAS 75%
- DEN to SEA 73%
- DEN to ORD 70%
- DEN to DFW 75%
- DEN to SAN 76%
- DEN to MSP 78%
- DEN to ATL 80%
- DEN to SFO 68%
- DEN to AUS 76%
Live status: FAA delays and ground stops