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Route on-time record

DEN to RIW: most on-time flights and the best time to fly

Denver (Denver International Airport) to Riverton (Central Wyoming Regional Airport). 728 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was SkyWest 5105 at 12:15 PM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

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DEN → RIW

Denver to Riverton: 728 nonstop flights a year

On time (12 months)

81%

Cancelled

0.7%

avg delay 18 min

Best time to leave

6 to 9 PM

93% on time vs 76% after 9 PM

Most reliable airline

SkyWest

81% chance on time

Check DEN to RIW fares

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. #1 · SkyWest 5105 · sold as United Express, Delta Connection, American Eagle or Alaska

    12:15 PM → 1:34 PM1h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5131; its record covers all of them.

    85%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 88% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).

    Limited track record · 32 flights

    Find 12:15 PM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 5018 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:05 PM → 10:24 PM1h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    77%

    chance on time

    On time (history)
    78%
    Cancelled
    0.8%
    Avg arrival delay
    26 min
    • Arrived on time 78% of the time (358 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (After 9 PM: 76% on time; 6 to 9 PM: 93%).
    • 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 · 358 flights

    Find 9:05 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 · 0.7% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Noon to 3 PM85%

    339 flights · avg delay 9 min

  • 6 to 9 PM93%

    42 flights · avg delay 9 min

  • After 9 PM76%

    321 flights · avg delay 28 min

Best day: Saturday (85%). Worst: Friday (77%).

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.

J
80
F
80
M
88
A
80
M
82
J
77
J
75
A
76
S
90
O
89
N
86
D
88

What delays this route

  • Late-arriving aircraft46%
  • Airline (crew, maintenance, boarding)37%
  • Air traffic control and airport volume12%
  • Severe weather6%

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

Finding the most reliable connections from DEN to RIW…

DEN to RIW questions

What time of day is best to fly DEN to RIW?
6 to 9 PM: 93% of flights arrived on time, against 76% for departures after 9 PM.
Which airline is most on time from DEN to RIW?
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 DEN to RIW?
July (75% on time); the best was September (90%), 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.

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Live status: FAA delays and ground stops