ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
GUC → DEN
Gunnison to Denver: 994 nonstop flights a year
On time (12 months)
79%
Cancelled
0.8%
avg delay 18 min
Best time to leave
Noon to 3 PM
86% on time vs 66% 3 to 6 PM
Most reliable airline
SkyWest
78% chance on time
Lowest nonstop fare seen in the next two months: $222 (United 5602 on 2026-10-22). 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 4767 · sold as United Express, Delta Connection, American Eagle or Alaska
1:35 PM → 2:54 PM1h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.4%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (144 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 86% on time; 3 to 6 PM: 66%).
- 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 · 144 flights
Find 1:35 PM flight fares Opens this date on Aviasales#2 · SkyWest 5602 · sold as United Express, Delta Connection, American Eagle or Alaska
7:00 AM → 8:29 AM1h 29m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 80%
- Cancelled
- 1.2%
- Avg arrival delay
- 19 min
- Arrived on time 80% of the time (324 flights, Jun 2025 to May 2026).
Strong track record · 324 flights
Find 7:00 AM flight fares Opens this date on Aviasales#3 · SkyWest 5749 · sold as United Express, Delta Connection, American Eagle or Alaska
3:23 PM → 4:44 PM1h 21m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
- On time (history)
- 66%
- Cancelled
- 0.4%
- Avg arrival delay
- 27 min
- Arrived on time 66% of the time (263 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 66% on time; Noon to 3 PM: 86%).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 263 flights
Find 3:23 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)78%
994 flights · 79% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM81%
365 flights · avg delay 18 min
- Noon to 3 PM86%
364 flights · avg delay 12 min
- 3 to 6 PM66%
265 flights · avg delay 27 min
Best day: Wednesday (85%). Worst: Saturday (79%).
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