DEN → AUS Flight Reliability

Right now

Origin · DENNo disruption reported

Aviation weather is not currently a factor.

Updated 08:53 UTC

Denver airport profile →

Destination · AUSNo disruption reported

Aviation weather is not currently a factor.

Updated 08:53 UTC

Austin airport profile →

Route reliability

July 2023 – July 2026

Route Reliability Score

67/ 100Good

Better than 53% of comparable major US routes (4,598 compared)

Calculated from 15,142 flights. How this is calculated

On-time arrivals

76.2%

11,432 of 15,008

Cancellation rate

0.67%

102 cancelled

Median arrival delay

-4 min

Average 7.9 min

Severe delays

7.3%

60+ minutes late

Delay when late

58 min

Average, when 15+ min late

Flights analyzed

15,142

4 carriers

DEN → AUS arrives on time 76.2% of the time; the return trip, AUS → DEN, arrives on time 79.9% of the time, a 3.7-point gap between the two directions of the same city pair.

DEN → AUS spends 24.5 minutes on the ground on a 775-mile trip: 17.6 minutes from pushback to wheels-up at DEN and 6.9 minutes from touchdown to gate at AUS.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

Why DEN → AUS flights are cancelled

July 2023 – July 2026

DEN → AUS cancelled 102 of 15,142 scheduled flights — about 1 in every 148. The reason filed most often was extreme weather, 47.1% of the cancellations coded on this route — about 1 in every 315 scheduled flights.

Share of cancellations

Weather47.1%

Airline39.2%

Air traffic13.7%

Security0.0%

Of 102 cancelled departures carrying a reason code.

What each reason means

Extreme weather1 in 315

Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.

48 cancellations, 47.1% of the total.

The airline1 in 379

Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.

40 cancellations, 39.2% of the total.

The air traffic system1 in 1,082

Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.

14 cancellations, 13.7% of the total.

Security—

A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.

0 cancellations, 0.0% of the total.

Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.

102 coded cancellations were recorded on DEN → AUS; the section appears from 50.

When it goes wrong

July 2023 – July 2026

One arrival in ten is worse than

46 min late

against a median of 4 min early

Arrived an hour or more late7.3%

Typical delay when late58 min

Cancelled0.67%

Landed somewhere else0.21%

Percentiles over 15,142 operations; cancelled and diverted flights are counted separately.

Will your connection be tight enough?

Layovers at AUS after arriving from DEN.

Connection buffer and chance of missing by layover length, DEN → AUS arrivals
Connection time	Chance of missing	Reads as
30 min	41%	Likely to miss
45 min	23%	High risk
60 min	15%	Some risk
90 min	7.2%	Some risk
120 min	4.0%	Low risk

This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.67% of the time and diverts 0.21% of the time, which a late arrival never shows up in.

Chance of missing is the share of 15,008 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.

The worst tenth of arrivals on this route land at least 46 minutes late (90th-percentile gate arrival delay), over 15,142 operations.

Any other layover length: connection checker.

Best time to fly

DEN → AUS flights departing 5–9 AM arrived on time 91.9% of the time, against 64.3% for 6–9 PM departures, a gap of 27.6 percentage points.

By day and hour

On-time arrival rate for each weekday and scheduled departure hour, in local time at the departure airport (DEN).

Hour of departure matters more than day of the week: hourly averages sit a typical 10.4 points from the route-wide rate, weekday averages 2.2 points.

On-time arrival rate for DEN to AUS by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
6 AM–7 AM
7 AM–8 AM
8 AM–9 AM
9 AM–10 AM
10 AM–11 AM
11 AM–12 PM
12 PM–1 PM
1 PM–2 PM
2 PM–3 PM
3 PM–4 PM
4 PM–5 PM
5 PM–6 PM
6 PM–7 PM
7 PM–8 PM
8 PM–9 PM

On-time rate, % · stronger color, fewer on time

50–59
60–69
70–79
80–89
90–99

Fewer than 120 flights, not scored

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.

No slot is named best or worst: too few reach 500 flights. Departures before 6 AM and after 9 PM (1,038 flights) are not drawn: no slot in those hours has enough flights to score.

View as tableHide table

On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday for DEN to AUS. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
6 AM–7 AM	93.1% on time131 flights	66 flights, too few to score	74 flights, too few to score	91.3% on time140 flights	91.0% on time122 flights	61 flights, too few to score	89.3% on time125 flights
7 AM–8 AM	93 flights, too few to score	81 flights, too few to score	87 flights, too few to score	76 flights, too few to score	91 flights, too few to score	73 flights, too few to score	98 flights, too few to score
8 AM–9 AM	91.2% on time205 flights	93.3% on time180 flights	90.0% on time182 flights	93.3% on time210 flights	87.0% on time200 flights	116 flights, too few to score	90.8% on time208 flights
9 AM–10 AM	83.3% on time164 flights	84.1% on time165 flights	80.0% on time150 flights	84.4% on time168 flights	82.4% on time171 flights	80.1% on time136 flights	82.6% on time164 flights
10 AM–11 AM	86.2% on time189 flights	83.6% on time179 flights	83.2% on time184 flights	78.9% on time181 flights	77.7% on time194 flights	76.6% on time124 flights	84.8% on time173 flights
11 AM–12 PM	80 flights, too few to score	75 flights, too few to score	66 flights, too few to score	79 flights, too few to score	74 flights, too few to score	69 flights, too few to score	60 flights, too few to score
12 PM–1 PM	81 flights, too few to score	55 flights, too few to score	60 flights, too few to score	86 flights, too few to score	94 flights, too few to score	23 flights, too few to score	54 flights, too few to score
1 PM–2 PM	82.6% on time202 flights	83.4% on time223 flights	80.8% on time219 flights	77.1% on time202 flights	77.7% on time203 flights	81.1% on time230 flights	73.8% on time241 flights
2 PM–3 PM	88 flights, too few to score	98 flights, too few to score	102 flights, too few to score	82 flights, too few to score	82 flights, too few to score	40 flights, too few to score	40 flights, too few to score
3 PM–4 PM	68.1% on time142 flights	86 flights, too few to score	81.4% on time140 flights	75.5% on time148 flights	72.1% on time143 flights	98 flights, too few to score	63.6% on time167 flights
4 PM–5 PM	101 flights, too few to score	46 flights, too few to score	43 flights, too few to score	99 flights, too few to score	95 flights, too few to score	61 flights, too few to score	94 flights, too few to score
5 PM–6 PM	63.0% on time192 flights	68.5% on time203 flights	64.4% on time197 flights	63.1% on time201 flights	59.8% on time185 flights	76.0% on time173 flights	68.6% on time196 flights
6 PM–7 PM	71.8% on time126 flights	68.3% on time146 flights	72.5% on time151 flights	66.1% on time122 flights	67.4% on time130 flights	66.1% on time120 flights	64.3% on time127 flights
7 PM–8 PM	108 flights, too few to score	103 flights, too few to score	99 flights, too few to score	111 flights, too few to score	115 flights, too few to score	67 flights, too few to score	97 flights, too few to score
8 PM–9 PM	59.0% on time283 flights	68.5% on time198 flights	71.8% on time214 flights	58.2% on time286 flights	58.5% on time278 flights	69.4% on time175 flights	63.7% on time269 flights

By departure window

5–9 AM91.9%

9 AM–12 PM80.8%

12–3 PM77.3%

3–6 PM67.6%

6–9 PM64.3%

9 PM–5 AM70.2%

By departure hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Why DEN → AUS runs late

July 2023 – July 2026

Late-arriving aircraft46.6%

the inbound aircraft was late, so this flight started late

The airline33.2%

crew, maintenance, boarding and fueling, all within the carrier’s control

Air traffic control17.5%

airspace and airport capacity, including weather-driven flow control

Weather2.5%

weather severe enough to stop this flight specifically

Security0.1%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for DEN → AUS. Only delays of 15 minutes or more are attributed.

Late-arriving aircraft is the largest cause on DEN → AUS, at 46.6%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 91.9% of the time and 6–9 PM departures 64.3%.

How this route holds up in bad weather

July 2023 – July 2026

The harder-hit end is the one the flight leaves from, where a cancellation keeps it from departing at all. Bad weather cancels 4.0 times the normal rate at DEN against 1.7 times at AUS. Cancelled in bad weather against normal hours: DEN 2.8% against 0.7%, AUS 1.6% against 0.9%. Flights that did leave DEN in bad weather arrived on time 51.5% of the time, against 78.8% in normal hours.

Bad weather and normal hours at the airports

Scheduled departures, July 2023 – July 2026

Departures from DEN and AUS in hours of bad weather and in normal hours
Departures from	DEN	AUS
Cancelled in bad weather	2.8%	1.6%
Cancelled in normal hours	0.7%	0.9%
Arrived on time, bad weather	51.5%	74.9%
Arrived on time, normal hours	78.8%	77.5%
Departures in bad weather	92,610	22,580

Of the carriers on this route, United Airlines (1.5% cancelled against 3.5% for the other carriers at DEN) cancelled the fewest departures from DEN in bad weather and SkyWest Airlines (5.8% cancelled against 1.8% for the other carriers at DEN) the most.

This route’s airlines in bad weather at DEN

All departures from DEN

Cancellation rates in bad weather at DEN for the airlines that fly DEN to AUS, against the other carriers at DEN in the same months
Airline	Bad-weather departures	Cancelled	Other carriers
United Airlines	30,853	1.5%below the others	3.5%
Southwest Airlines	28,467	2.4%below the others	3.1%
Frontier Airlines	6,740	3.1%about level	2.8%
SkyWest Airlines	19,275	5.8%above the others	1.8%

These are airport figures, not route figures: every scheduled departure from DEN and AUS, to any destination, in hours the weather report called bad. The airline rows count each carrier’s departures from DEN on every route.

Weather source and limits. In full: DEN (airlines), AUS, What Weather Costs Each Airport, Who Cancels More When the Weather Turns, Airports That Change Places When Weather Turns.

Airlines on this route

Carriers with at least 200 flights, by the airline that operated each one.

Airlines on this route
Carrier	Flights	On time	Cancelled	Median delay	Severe
Southwest Airlines	7,571	74.7%	0.75%	-1 min	6.9%
United Airlines	5,707	78.8%	0.56%	-6 min	7.2%
Frontier Airlines	1,309	72.3%	0.76%	-6 min	9.6%
SkyWest Airlines	555	77.7%	0.54%	-6 min	8.3%

Southwest Airlines flew 50.0% of the 15,142 flights listed.

United Airlines arrived on time 6.5 percentage points more often than Frontier Airlines on this route.

Flights on this route

Flight numbers with at least 600 operations here and still on the schedule.

Flights on this route
Flight	Scheduled	Operations	On time
UA1026 United Airlines	10:05 AM	1,067	82.1%
UA456 United Airlines	8:05 AM	816	91.4%
UA1942 United Airlines	6:10 PM	641	69.5%
F91816 Frontier Airlines	5:01 AM	614	80.5%

UA456 (8:05 AM) arrived on time 91.4% of the time, 21.9 points more often than UA1942 (6:10 PM) at 69.5%.

Weekly and seasonal patterns

By day of week

Mon76.1%

Tue79.2%

Wed79.6%

Thu74.6%

Fri73.6%

Sat77.0%

Sun74.2%

Wednesday is historically the most reliable day and Friday the least, a gap of 6.0 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

July is historically the weakest month and September the strongest, a spread of 17.2 percentage points.

Reliability over time

July 2023 – July 2026

24

25

26

Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 76.6% against 75.6% in the 12 months before — broadly unchanged.

Data and methodology

Calculated by FlyerIntel from 15,142 DEN → AUS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.

Full methodology · Data sources · Report a problem

Analysis last recomputed September 26, 2026

DEN airport AUS airport Return direction AUS → DEN

DEN→AUS

Right now

Route reliability

Why DEN → AUS flights are cancelled

Share of cancellations

What each reason means

When it goes wrong

Will your connection be tight enough?

Best time to fly

By day and hour

By departure window

By departure hour

Why DEN → AUS runs late

How this route holds up in bad weather

Bad weather and normal hours at the airports

This route’s airlines in bad weather at DEN

Airlines on this route

Flights on this route

Weekly and seasonal patterns

By day of week

By month

Reliability over time

Data and methodology