Route on-time record
DEN to ASE: most on-time flights and the best time to fly
Denver (Denver International Airport) to Aspen (Aspen-Pitkin County Airport (Sardy Field)). 2,717 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 5.2% were cancelled. The most reliable flight number was SkyWest 5782 at 8:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
DEN → ASE
Denver to Aspen: 2,717 nonstop flights a year
On time (12 months)
74%
Cancelled
5.2%
avg delay 27 min
Best time to leave
Before 9 AM
84% on time vs 71% noon to 3 PM
Most reliable airline
SkyWest
71% chance on time
Lowest nonstop fare seen in the next two months: $436 (United 5782 on 2026-11-01). 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 5782 · sold as United Express, Delta Connection, American Eagle or Alaska
8:00 AM → 8:59 AM1h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 81%
- Cancelled
- 3.0%
- Avg arrival delay
- 14 min
- Arrived on time 81% of the time (317 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (10 of 330).
- Leaves in this route's most on-time window (Before 9 AM: 84% on time; Noon to 3 PM: 71%).
- 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 · 317 flights
Find 8:00 AM flight fares Opens this date on Aviasales#2 · SkyWest 5444 · sold as United Express, Delta Connection, American Eagle or Alaska
10:05 AM → 11:09 AM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 4798; its record covers all of them.
77%
chance on time
- On time (history)
- 84%
- Cancelled
- 4.8%
- Avg arrival delay
- 10 min
- Arrived on time 84% of the time (137 flights, Jun 2025 to May 2026).
- Cancelled 4.8% of the time (7 of 146).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside ASE's trouble window: 85% of its 46 ground stops and delay programs started between 6 AM and noon.
Moderate track record · 137 flights
Find 10:05 AM flight fares Opens this date on Aviasales#3 · SkyWest 5781 · sold as United Express, Delta Connection, American Eagle or Alaska
8:50 PM → 9:48 PM1h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 75%
- Cancelled
- 6.2%
- Avg arrival delay
- 56 min
- Arrived on time 75% of the time (268 flights, Jun 2025 to May 2026).
- Cancelled 6.2% of the time (18 of 289).
- 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 · 268 flights
Find 8:50 PM flight fares Opens this date on Aviasales#4 · SkyWest 5773 · sold as United Express, Delta Connection, American Eagle or Alaska
3:35 PM → 4:35 PM1h 02m nonstop
Local times, typical schedule. Last flown 2026-05-30.
70%
chance on time
- On time (history)
- 75%
- Cancelled
- 7.7%
- Avg arrival delay
- 19 min
- Arrived on time 75% of the time (295 flights, Jun 2025 to May 2026).
- Cancelled 7.7% of the time (25 of 326).
- 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 · 295 flights
Find 3:35 PM flight fares Opens this date on Aviasales#5 · SkyWest 5769 · sold as United Express, Delta Connection, American Eagle or Alaska
11:20 AM → 12:25 PM1h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 72%
- Cancelled
- 3.3%
- Avg arrival delay
- 21 min
- Arrived on time 72% of the time (316 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (11 of 335).
- 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 · 316 flights
Find 11:20 AM flight fares Opens this date on Aviasales#6 · SkyWest 5616 · sold as United Express, Delta Connection, American Eagle or Alaska
5:35 PM → 6:35 PM1h 00m nonstop
Local times, typical schedule. Last flown 2026-04-21.
69%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 83% of the time (24 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.
- Short track record (24 flights), so its score leans on the airline's record at this hour.
Limited track record · 24 flights
Find 5:35 PM flight fares Opens this date on Aviasales#7 · SkyWest 5771 · sold as United Express, Delta Connection, American Eagle or Alaska
1:40 PM → 2:40 PM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31.
68%
chance on time
- On time (history)
- 72%
- Cancelled
- 6.3%
- Avg arrival delay
- 20 min
- Arrived on time 72% of the time (309 flights, Jun 2025 to May 2026).
- Cancelled 6.3% of the time (21 of 335).
- Leaves in this route's least on-time window (Noon to 3 PM: 71% on time; Before 9 AM: 84%).
- 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 · 309 flights
Find 1:40 PM flight fares Opens this date on Aviasales#8 · SkyWest 5779 · sold as United Express, Delta Connection, American Eagle or Alaska
7:25 PM → 8:23 PM1h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
67%
chance on time
- On time (history)
- 70%
- Cancelled
- 4.2%
- Avg arrival delay
- 38 min
- Arrived on time 70% of the time (318 flights, Jun 2025 to May 2026).
- Cancelled 4.2% of the time (14 of 336).
- 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 · 318 flights
Find 7:25 PM flight fares Opens this date on Aviasales#9 · SkyWest 5775 · sold as United Express, Delta Connection, American Eagle or Alaska
4:30 PM → 5:30 PM1h 04m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as SkyWest 5697; its record covers all of them.
67%
chance on time
- On time (history)
- 69%
- Cancelled
- 4.7%
- Avg arrival delay
- 36 min
- Arrived on time 69% of the time (365 flights, Jun 2025 to May 2026).
- Cancelled 4.7% of the time (18 of 387).
- 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 · 365 flights
Find 4:30 PM flight fares Opens this date on Aviasales#10 · SkyWest 5597 · sold as United Express, Delta Connection, American Eagle or Alaska
12:18 PM → 1:23 PM1h 05m nonstop
Local times, typical schedule. Last flown 2026-04-21. Same departure also flew as SkyWest 5806; its record covers all of them.
61%
chance on time
- On time (history)
- 69%
- Cancelled
- 11.4%
- Avg arrival delay
- 22 min
- Arrived on time 69% of the time (62 flights, Jun 2025 to May 2026).
- Cancelled 11.4% of the time (8 of 70).
- Leaves in this route's least on-time window (Noon to 3 PM: 71% on time; Before 9 AM: 84%).
- 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 · 62 flights
Find 12:18 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)71%
2,717 flights · 74% on time as flown · 5.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM84%
242 flights · avg delay 11 min
- 9 AM to noon76%
653 flights · avg delay 18 min
- Noon to 3 PM71%
436 flights · avg delay 20 min
- 3 to 6 PM73%
755 flights · avg delay 28 min
- 6 to 9 PM72%
629 flights · avg delay 46 min
Best day: Tuesday (80%). Worst: Sunday (70%).
Smarter routing
Nearby airports that run more on time
DEN → GUC 81% chance on time
Denver International Airport to Gunnison Crested Butte Regional Airport · 994 flights a year · 48 mi from your airports · yours: 70%
DEN → EGE 78% chance on time
Denver International Airport to Eagle County Regional Airport · 1,172 flights a year · 29 mi from your airports · yours: 70%
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
- Air traffic control and airport volume35%
- Late-arriving aircraft25%
- Airline (crew, maintenance, boarding)21%
- Severe weather20%
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 ASE questions
- What time of day is best to fly DEN to ASE?
- Before 9 AM: 84% of flights arrived on time, against 71% 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 DEN to ASE?
- SkyWest, with a season-adjusted 71% chance of operating and arriving on time over 2,717 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 ASE?
- June (66% on time); the best was October (83%), 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
- ASE 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