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Route on-time record

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

Reno (Reno Tahoe International Airport) to Denver (Denver International Airport). 2,571 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was Southwest 2037 at 5:55 AM.

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

RNO → DEN

Reno to Denver: 2,571 nonstop flights a year

On time (12 months)

85%

Cancelled

0.3%

avg delay 12 min

Best time to leave

Before 9 AM

93% on time vs 61% 3 to 6 PM

Most reliable airline

Frontier

86% chance on time

Check RNO to DEN fares

Lowest nonstop fare seen in the next two months: $299 (Southwest 1254 on 2026-10-30). 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 · Southwest 2037

    5:55 AM → 9:10 AM2h 15m nonstop

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

    95%

    chance on time

    On time (history)
    98%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 98% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 61%).
    • Short track record (55 flights), so its score leans on the airline's record at this hour.

    Limited track record · 55 flights

    Find Southwest 2037 fares Opens this date on Aviasales

  2. #2 · United 225

    5:30 AM → 8:47 AM2h 17m nonstop

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

    91%

    chance on time

    On time (history)
    93%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 93% of the time (145 flights, Jun 2025 to May 2026).
    • Never cancelled in 145 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 61%).

    Moderate track record · 145 flights

    Find United 225 fares Opens this date on Aviasales

  3. #3 · Southwest 3638

    8:40 AM → 11:50 AM2h 10m nonstop

    Local times, typical schedule. Last flown 2026-04-01.

    91%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 61%).
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 3638 fares Opens this date on Aviasales

  4. #4 · Southwest 2330

    6:15 AM → 9:40 AM2h 25m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    90%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    2 min
    • Arrived on time 91% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 61%).
    • Short track record (33 flights), so its score leans on the airline's record at this hour.

    Limited track record · 33 flights

    Find Southwest 2330 fares Opens this date on Aviasales

  5. #5 · Southwest 4010

    10:35 AM → 1:50 PM2h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 91% of the time (23 flights, Jun 2025 to May 2026).
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 4010 fares Opens this date on Aviasales

  6. #6 · Southwest 1375

    10:25 AM → 1:35 PM2h 10m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    88%

    chance on time

    On time (history)
    90%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 90% of the time (20 flights, Jun 2025 to May 2026).
    • Short track record (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find Southwest 1375 fares Opens this date on Aviasales

  7. #7 · United 347

    9:10 AM → 12:32 PM2h 22m nonstop

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

    87%

    chance on time

    On time (history)
    90%
    Cancelled
    0.5%
    Avg arrival delay
    6 min
    • Arrived on time 90% of the time (194 flights, Jun 2025 to May 2026).

    Moderate track record · 194 flights

    Find United 347 fares Opens this date on Aviasales

  8. #8 · Southwest 994

    1:50 PM → 5:05 PM2h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-27.

    87%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    1 min
    • Arrived on time 100% of the time (16 flights, Jun 2025 to May 2026).
    • Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (16 flights), so its score leans on the airline's record at this hour.

    Limited track record · 16 flights

    Find Southwest 994 fares Opens this date on Aviasales

  9. #9 · Southwest 3610

    1:25 PM → 4:40 PM2h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    82%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
    • Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (8 flights), so its score leans on the airline's record at this hour.

    Limited track record · 8 flights

    Find Southwest 3610 fares Opens this date on Aviasales

  10. #10 · United 1534

    1:46 PM → 5:03 PM2h 17m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2857, 2421; its record covers all of them.

    82%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    15 min
    • Arrived on time 86% of the time (146 flights, Jun 2025 to May 2026).
    • Never cancelled in 146 scheduled flights.
    • Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 146 flights

    Find United 1534 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Frontier Airlines86%

    71 flights · 86% on time as flown · 0.2% cancel

  • Southwest Airlines86%

    1,092 flights · 86% on time as flown · 0.3% cancel

  • United Airlines84%

    1,383 flights · 84% on time as flown · 0.4% cancel

On time by departure time

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

  • Before 9 AM93%

    813 flights · avg delay 4 min

  • 9 AM to noon88%

    819 flights · avg delay 10 min

  • Noon to 3 PM80%

    588 flights · avg delay 17 min

  • 3 to 6 PM61%

    174 flights · avg delay 30 min

  • 6 to 9 PM78%

    177 flights · avg delay 28 min

Best day: Wednesday (88%). Worst: Sunday (82%).

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
87
F
85
M
86
A
86
M
81
J
79
J
76
A
82
S
85
O
89
N
91
D
88

What delays this route

  • Air traffic control and airport volume34%
  • Late-arriving aircraft33%
  • Airline (crew, maintenance, boarding)28%
  • 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

RNO to DEN questions

What time of day is best to fly RNO to DEN?
Before 9 AM: 93% of flights arrived on time, against 61% for departures 3 to 6 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 RNO to DEN?
Frontier, with a season-adjusted 86% chance of operating and arriving on time over 71 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 RNO to DEN?
July (76% on time); the best was November (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 RNO

Live status: FAA delays and ground stops