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Flight Reliability

F9 3172 · Frontier Airlines

Denver → Chicago (DEN–ORD)

58
A Little Dicey
WanderNerd Reliability Score
64%
Arrive within 15 minutes
28 min
Average arrival delay
1.3%
Cancelled
0 min
Median arrival delay

Based on 153 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 3172 departing between 3–6 PM arrived on time 71% of the time, versus 59% between 6–9 PM.

Sunday scaries are real for this one.

F9 3172 arrived on time 94% of the time on Wednesdays and just 52% on Sundays. That gap is worth planning around.

Lagging the DEN–ORD route.

F9 3172 arrived on time 64% of the time, versus 71% across the DEN–ORD route.

Lagging the Frontier Airlines network.

F9 3172 arrived on time 64% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon57%(23 flights)
  • Tue71%(14 flights)
  • Wed94%(16 flights)
  • Thu62%(29 flights)
  • Fri64%(22 flights)
  • Sat64%(14 flights)
  • Sun52%(33 flights)
On-time by departure window
  • 6–9 AM—(6 flights)
  • 12–3 PM—(6 flights)
  • 3–6 PM71%(14 flights)
  • 6–9 PM59%(111 flights)
  • 9 PM–12 AM71%(14 flights)
On-time trend by month
64%
Mar

Aug 80% → Mar 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202580%15
September 202552%21
October 202575%24
November 202561%23
December 202557%23
January 202653%15
March 202664%11
Departures on time
62%
Diverted
0%
Flights flown
151
Months covered
10

Same route, other flights

Keep nerding

Based on 153 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.