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Flight Reliability

F9 1790 · Frontier Airlines

Portland → Denver (PDX–DEN)

82
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
3 min
Average arrival delay
1.2%
Cancelled
6 min early
Median arrival delay

Based on 256 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

F9 1790 departing between 3–6 PM arrived on time 100% of the time, versus 72% between 6–9 AM.

Skip Wednesday if you can.

F9 1790 arrived on time 82% of the time on Fridays. On Wednesdays: 68%.

A bit ahead of the Frontier Airlines network.

F9 1790 arrived on time 79% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon82%(38 flights)
  • Tue78%(32 flights)
  • Wed68%(25 flights)
  • Thu81%(41 flights)
  • Fri82%(39 flights)
  • Sat79%(33 flights)
  • Sun78%(45 flights)
On-time by departure window
  • 6–9 AM72%(125 flights)
  • 9 AM–12 PM74%(19 flights)
  • 12–3 PM84%(90 flights)
  • 3–6 PM100%(19 flights)
On-time trend by month
91%
May

Jun 72% → May 91% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%29
July 202576%29
August 202581%31
September 202563%30
October 202580%30
November 2025100%23
December 202573%15
March 202680%15
April 202686%21
May 202691%22
Departures on time
84%
Diverted
0%
Flights flown
253
Months covered
11

Same route, other flights

Keep nerding

Based on 256 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.