Route on-time record

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

Denver (Denver International Airport) to Austin (Austin Bergstrom International Airport). 5,231 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was United 456 at 8:05 AM.

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

DEN → AUS

Denver to Austin: 5,231 nonstop flights a year

On time (12 months)

76%

Cancelled

0.6%

avg delay 16 min

Best time to leave

Before 9 AM

93% on time vs 64% 6 to 9 PM

Most reliable airline

United

80% chance on time

Check DEN to AUS 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 · United 456
8:05 AM → 11:25 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
93%
chance on time
On time (history)
94%
Cancelled
0.3%
Avg arrival delay
4 min
- Arrived on time 94% of the time (305 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 64%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 305 flights
Find United 456 fares Opens this date on Aviasales
#2 · Southwest 1779
6:05 AM → 9:15 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-29. Same departure also flew as Southwest 971; its record covers all of them.
90%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 93% of the time (72 flights, Jun 2025 to May 2026).
- Never cancelled in 72 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 64%).
- 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 · 72 flights
Find Southwest 1779 fares Opens this date on Aviasales
#3 · Southwest 1163
7:40 AM → 10:50 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3081; its record covers all of them.
90%
chance on time
On time (history)
95%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 95% of the time (62 flights, Jun 2025 to May 2026).
- Never cancelled in 62 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 64%).
- 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 Southwest 1163 fares Opens this date on Aviasales
#4 · Southwest 1083
7:15 AM → 10:25 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30.
86%
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; 6 to 9 PM: 64%).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Limited track record · 8 flights
Find Southwest 1083 fares Opens this date on Aviasales
#5 · Frontier 1860
6:45 AM → 10:06 AM2h 21m nonstop
Local times, typical schedule. Last flown 2026-04-29.
83%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 85% of the time (48 flights, Jun 2025 to May 2026).
- Never cancelled in 48 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 6 to 9 PM: 64%).
- 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 · 48 flights
Find Frontier 1860 fares Opens this date on Aviasales
#6 · SkyWest 3876 · sold as United Express, Delta Connection, American Eagle or Alaska
9:50 AM → 1:15 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
On time (history)
87%
Cancelled
0.7%
Avg arrival delay
12 min
- Arrived on time 87% of the time (146 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 146 flights
Find 9:50 AM flight fares Opens this date on Aviasales
#7 · United 1026
9:50 AM → 1:08 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
83%
Cancelled
0.3%
Avg arrival delay
10 min
- Arrived on time 83% of the time (361 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
Strong track record · 361 flights
Find United 1026 fares Opens this date on Aviasales
#8 · United 2270
1:35 PM → 4:54 PM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
On time (history)
85%
Cancelled
0.6%
Avg arrival delay
12 min
- Arrived on time 85% of the time (164 flights, Jun 2025 to May 2026).
- 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 · 164 flights
Find United 2270 fares Opens this date on Aviasales
#9 · Southwest 1309
10:50 AM → 2:00 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
80%
chance on time
On time (history)
84%
Cancelled
0.0%
Avg arrival delay
13 min
- Arrived on time 84% of the time (25 flights, Jun 2025 to May 2026).
- Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
- Lands inside AUS's trouble window: 79% of its 91 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (25 flights), so its score leans on the airline's record at this hour.
Limited track record · 25 flights
Find Southwest 1309 fares Opens this date on Aviasales
#10 · Southwest 1760
7:00 PM → 10:10 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 687; its record covers all of them.
78%
chance on time
On time (history)
79%
Cancelled
0.8%
Avg arrival delay
11 min
- Arrived on time 79% of the time (118 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 64% on time; Before 9 AM: 93%).
- Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Moderate track record · 118 flights
Find Southwest 1760 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

United Airlines80%
1,932 flights · 80% on time as flown · 0.6% cancel
SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)78%
431 flights · 82% on time as flown · 0.7% cancel
Southwest Airlines73%
2,347 flights · 73% on time as flown · 0.5% cancel
Frontier Airlines71%
521 flights · 72% on time as flown · 0.7% cancel

On time by departure time

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

Before 9 AM93%
1,003 flights · avg delay 4 min
9 AM to noon82%
1,037 flights · avg delay 12 min
Noon to 3 PM76%
801 flights · avg delay 16 min
3 to 6 PM69%
1,051 flights · avg delay 21 min
6 to 9 PM64%
1,169 flights · avg delay 25 min
After 9 PM70%
170 flights · avg delay 20 min

Best day: Wednesday (80%). Worst: Friday (74%).

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 aircraft47%
Airline (crew, maintenance, boarding)33%
Air traffic control and airport volume17%
Severe weather3%

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 AUS questions

What time of day is best to fly DEN to AUS?: Before 9 AM: 93% of flights arrived on time, against 64% 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 DEN to AUS?: United, with a season-adjusted 80% chance of operating and arriving on time over 1,932 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 AUS?: July (66% on time); the best was September (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.

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