Route on-time record
RKS to DEN: most on-time flights and the best time to fly
Rock Springs (Southwest Wyoming Regional Airport) to Denver (Denver International Airport). 728 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was SkyWest 5093 at 5:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
RKS → DEN
Rock Springs to Denver: 728 nonstop flights a year
On time (12 months)
81%
Cancelled
0.5%
avg delay 33 min
Best time to leave
Before 9 AM
87% on time vs 75% noon to 3 PM
Most reliable airline
SkyWest
81% 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 · SkyWest 5093 · sold as United Express, Delta Connection, American Eagle or Alaska
5:15 AM → 6:36 AM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.5%
- Avg arrival delay
- 30 min
- Arrived on time 87% of the time (362 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 87% on time; Noon to 3 PM: 75%).
Strong track record · 362 flights
Find 5:15 AM flight fares Opens this date on Aviasales#2 · SkyWest 5031 · sold as United Express, Delta Connection, American Eagle or Alaska
2:16 PM → 3:40 PM1h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 6076; its record covers all of them.
78%
chance on time
- On time (history)
- 75%
- Cancelled
- 0.0%
- Avg arrival delay
- 18 min
- Arrived on time 75% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Leaves in this route's least on-time window (Noon to 3 PM: 75% on time; Before 9 AM: 87%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 32 flights
Find 2:16 PM flight 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)81%
728 flights · 81% 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%
364 flights · avg delay 30 min
- Noon to 3 PM75%
364 flights · avg delay 37 min
Best day: Saturday (87%). Worst: Monday (83%).
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)53%
- Late-arriving aircraft30%
- Air traffic control and airport volume10%
- 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
RKS to DEN questions
- What time of day is best to fly RKS to DEN?
- Before 9 AM: 87% of flights arrived on time, against 75% for departures noon to 3 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 RKS to DEN?
- SkyWest, with a season-adjusted 81% chance of operating and arriving on time over 728 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 RKS to DEN?
- April (81% on time); the best was September (91%), 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 RKS
Live status: FAA delays and ground stops