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Flight Reliability

F9 1735 · Frontier Airlines

Chicago → Phoenix (MDW–PHX)

70
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
27 min
Average arrival delay
1.6%
Cancelled
5 min early
Median arrival delay

Based on 125 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 1735 departing between 3–6 PM arrived on time 84% of the time, versus 70% between 6–9 PM.

Friday is doing you no favors.

F9 1735 arrived on time 80% of the time on Mondays. On Fridays: 69%.

A bit ahead of the Frontier Airlines network.

F9 1735 arrived on time 77% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon80%(20 flights)
  • Tue—(3 flights)
  • Wed—(1 flights)
  • Thu78%(36 flights)
  • Fri69%(16 flights)
  • Sat—(7 flights)
  • Sun80%(40 flights)
On-time by departure window
  • 6–9 AM75%(28 flights)
  • 9 AM–12 PM—(9 flights)
  • 12–3 PM80%(35 flights)
  • 3–6 PM84%(25 flights)
  • 6–9 PM70%(23 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
86%
Mar

Oct 67% → Mar 86% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202567%12
November 202586%14
February 202685%13
March 202686%21
Departures on time
76%
Diverted
0%
Flights flown
123
Months covered
12

Same route, other flights

Keep nerding

Based on 125 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.