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Flight Reliability

F9 1829 · Frontier Airlines

Chicago → Phoenix (ORD–PHX)

52
A Little Dicey
WanderNerd Reliability Score
67%
Arrive within 15 minutes
15 min
Average arrival delay
4.5%
Cancelled
0 min
Median arrival delay

Based on 179 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

F9 1829 departing between 6–9 AM arrived on time 82% of the time, versus 42% between 9 AM–12 PM.

Mondays have been rough.

F9 1829 arrived on time 78% of the time on Thursdays and just 56% on Mondays. That gap is worth planning around.

Lagging the ORD–PHX route.

F9 1829 arrived on time 67% of the time, versus 75% across the ORD–PHX route.

A bit behind the Frontier Airlines network.

F9 1829 arrived on time 67% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon56%(41 flights)
  • Tue73%(11 flights)
  • Wed—(7 flights)
  • Thu78%(27 flights)
  • Fri61%(38 flights)
  • Sat77%(13 flights)
  • Sun73%(33 flights)
On-time by departure window
  • 6–9 AM82%(71 flights)
  • 9 AM–12 PM42%(12 flights)
  • 12–3 PM64%(66 flights)
  • 3–6 PM44%(18 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
79%
Apr

Aug 58% → Apr 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202558%12
September 202573%15
October 202577%17
November 202558%12
January 202640%15
February 202675%24
March 202683%29
April 202679%19
Departures on time
73%
Diverted
0.6%
Flights flown
170
Months covered
12

Same route, other flights

Keep nerding

Based on 179 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.