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Flight Reliability

F9 4500 · Frontier Airlines

Portland → Los Angeles (PDX–LAX)

78
Usually Fine
WanderNerd Reliability Score
81%
Arrive within 15 minutes
1 min
Average arrival delay
2.9%
Cancelled
10 min early
Median arrival delay

Based on 204 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 4500 departing between 9 AM–12 PM arrived on time 90% of the time, versus 77% between 12–3 PM.

Sunday has been the better bet.

A small edge: 85% on time on Sundays against 79% on Saturdays.

A bit behind the PDX–LAX route.

F9 4500 arrived on time 81% of the time, versus 87% across the PDX–LAX route.

Better than the Frontier Airlines network average.

F9 4500 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon83%(42 flights)
  • Tue—(2 flights)
  • Wed—(1 flights)
  • Thu79%(38 flights)
  • Fri81%(43 flights)
  • Sat79%(33 flights)
  • Sun85%(39 flights)
On-time by departure window
  • 9 AM–12 PM90%(40 flights)
  • 12–3 PM77%(123 flights)
  • 3–6 PM86%(29 flights)
  • 6–9 PM—(6 flights)
On-time trend by month
95%
May

Jun 56% → May 95% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202556%16
July 202563%19
August 202581%21
September 202576%21
October 202591%21
November 202594%17
December 202573%11
January 202691%11
March 202690%20
April 202677%13
May 202695%20
Departures on time
82%
Diverted
0%
Flights flown
198
Months covered
12

Same route, other flights

Keep nerding

Based on 204 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.