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Flight Reliability

F9 1816 · Frontier Airlines

Denver → Austin (DEN–AUS)

86
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
3 min
Average arrival delay
0.6%
Cancelled
12 min early
Median arrival delay

Based on 156 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 1816 departing between 6–9 AM arrived on time 87% of the time, versus 72% between 3–6 PM.

Friday is doing you no favors.

F9 1816 arrived on time 100% of the time on Wednesdays and just 72% on Fridays. That gap is worth planning around.

A bit ahead of the DEN–AUS route.

F9 1816 arrived on time 81% of the time, versus 77% across the DEN–AUS route.

Better than the Frontier Airlines network average.

F9 1816 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon84%(31 flights)
  • Tue74%(19 flights)
  • Wed100%(10 flights)
  • Thu89%(18 flights)
  • Fri72%(36 flights)
  • Sat83%(12 flights)
  • Sun79%(29 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM87%(47 flights)
  • 9 AM–12 PM84%(19 flights)
  • 12–3 PM—(3 flights)
  • 3–6 PM72%(46 flights)
  • 6–9 PM79%(38 flights)
On-time trend by month
100%
May

Sep 79% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
September 202579%19
October 202569%13
November 202589%18
January 202675%16
March 202678%27
April 202684%19
May 2026100%15
Departures on time
81%
Diverted
0%
Flights flown
155
Months covered
11

Same route, other flights

Keep nerding

Based on 156 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.