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Flight Reliability

F9 1828 · Frontier Airlines

Phoenix → Chicago (PHX–ORD)99% of its flights flew this route. The rest (MKE–ORD) are included in these numbers.

49
Bring Snacks
WanderNerd Reliability Score
72%
Arrive within 15 minutes
19 min
Average arrival delay
5.0%
Cancelled
6 min early
Median arrival delay

Based on 181 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

F9 1828 departing between 12–3 PM arrived on time 89% of the time, versus 63% between 3–6 PM.

Skip Monday if you can.

F9 1828 arrived on time 81% of the time on Thursdays. On Mondays: 67%.

A bit behind the PHX–ORD route.

F9 1828 arrived on time 72% of the time, versus 78% across the PHX–ORD route.

Keep a backup plan handy.

F9 1828 was cancelled 5.0% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon67%(39 flights)
  • Tue—(9 flights)
  • Wed—(7 flights)
  • Thu81%(26 flights)
  • Fri68%(38 flights)
  • Sat79%(19 flights)
  • Sun71%(31 flights)
On-time by departure window
  • 6–9 AM86%(21 flights)
  • 9 AM–12 PM73%(62 flights)
  • 12–3 PM89%(18 flights)
  • 3–6 PM63%(56 flights)
  • 6–9 PM67%(12 flights)
On-time trend by month
80%
Apr

Aug 55% → Apr 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 202555%11
September 202575%16
October 202577%17
November 202582%11
December 202567%15
January 202682%11
February 202685%20
March 202666%29
April 202680%20
Departures on time
72%
Diverted
1.7%
Flights flown
169
Months covered
12

Same route, other flights

Keep nerding

Based on 181 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.