Route on-time record
AUS to DEN: most on-time flights and the best time to fly
Austin (Austin Bergstrom International Airport) to Denver (Denver International Airport). 5,231 nonstop flights in Jun 2025 to May 2026, 78% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was United 361 at 7:00 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
AUS → DEN
Austin to Denver: 5,231 nonstop flights a year
On time (12 months)
78%
Cancelled
0.8%
avg delay 16 min
Best time to leave
Before 9 AM
91% on time vs 59% 6 to 9 PM
Most reliable airline
Frontier
84% 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 · United 361
7:00 AM → 8:25 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 97%
- Cancelled
- 1.4%
- Avg arrival delay
- 1 min
- Arrived on time 97% of the time (143 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 59%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Moderate track record · 143 flights
Find United 361 fares Opens this date on Aviasales#2 · United 1541
12:55 PM → 2:10 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 98%
- Cancelled
- 0.0%
- Avg arrival delay
- 1 min
- Arrived on time 98% of the time (59 flights, Jun 2025 to May 2026).
- Never cancelled in 59 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- 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 · 59 flights
Find United 1541 fares Opens this date on Aviasales#3 · SkyWest 3876 · sold as United Express, Delta Connection, American Eagle or Alaska
7:33 AM → 9:05 AM2h 31m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.7%
- Avg arrival delay
- 8 min
- Arrived on time 94% of the time (146 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 59%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Moderate track record · 146 flights
Find 7:33 AM flight fares Opens this date on Aviasales#4 · Southwest 1486
6:30 AM → 7:45 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 94% of the time (54 flights, Jun 2025 to May 2026).
- Never cancelled in 54 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 59%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Limited track record · 54 flights
Find Southwest 1486 fares Opens this date on Aviasales#5 · United 779
10:50 AM → 12:15 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 398; its record covers all of them.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.8%
- Avg arrival delay
- 8 min
- Arrived on time 90% of the time (261 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 261 flights
Find United 779 fares Opens this date on Aviasales#6 · Frontier 1859
11:01 AM → 12:27 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 89% of the time (36 flights, Jun 2025 to May 2026).
- Never cancelled in 36 scheduled flights.
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (36 flights), so its score leans on the airline's record at this hour.
Limited track record · 36 flights
Find Frontier 1859 fares Opens this date on Aviasales#7 · Southwest 1723
10:30 AM → 11:50 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-27.
88%
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).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 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 1723 fares Opens this date on Aviasales#8 · Southwest 2949
6:15 AM → 7:35 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
87%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 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: 91% on time; 6 to 9 PM: 59%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Limited track record · 33 flights
Find Southwest 2949 fares Opens this date on Aviasales#9 · Frontier 1815
6:45 AM → 8:11 AM2h 26m nonstop
Local times, typical schedule. Last flown 2026-04-13.
87%
chance on time
- On time (history)
- 87%
- Cancelled
- 0.6%
- Avg arrival delay
- 13 min
- Arrived on time 87% of the time (314 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 59%).
- Departs outside AUS's trouble window (10 AM to 4 PM, when 79% of its 91 ground stops and delay programs started).
Strong track record · 314 flights
Find Frontier 1815 fares Opens this date on Aviasales#10 · United 1485
12:45 PM → 2:11 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-03-27.
87%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
- Departs inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- 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 (20 flights), so its score leans on the airline's record at this hour.
Limited track record · 20 flights
Find United 1485 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Frontier Airlines84%
521 flights · 85% on time as flown · 0.6% cancel
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)80%
430 flights · 83% on time as flown · 0.7% cancel
- United Airlines80%
1,933 flights · 81% on time as flown · 1.3% cancel
- Southwest Airlines73%
2,347 flights · 73% on time as flown · 0.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
1,394 flights · avg delay 8 min
- 9 AM to noon88%
940 flights · avg delay 8 min
- Noon to 3 PM82%
855 flights · avg delay 12 min
- 3 to 6 PM66%
943 flights · avg delay 25 min
- 6 to 9 PM59%
908 flights · avg delay 26 min
- After 9 PM69%
191 flights · avg delay 25 min
Best day: Saturday (83%). Worst: Friday (78%).
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
- Late-arriving aircraft41%
- Air traffic control and airport volume31%
- Airline (crew, maintenance, boarding)24%
- Severe weather4%
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
AUS to DEN questions
- What time of day is best to fly AUS to DEN?
- Before 9 AM: 91% of flights arrived on time, against 59% for departures 6 to 9 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 AUS to DEN?
- Frontier, with a season-adjusted 84% chance of operating and arriving on time over 521 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 AUS to DEN?
- June (70% on time); the best was November (86%), 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 AUS
- DEN to AUS (return)
- AUS to DFW 73%
- AUS to ATL 81%
- AUS to LAX 82%
- AUS to PHX 79%
- AUS to ORD 73%
- AUS to BNA 77%
- AUS to LAS 75%
- AUS to SFO 76%
- AUS to MCO 73%
- AUS to IAH 76%
- AUS to SAN 75%
- AUS to DAL 78%
Live status: FAA delays and ground stops