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Flight Reliability

F9 690 · Frontier Airlines

Denver → Washington (DEN–DCA)

63
A Little Dicey
WanderNerd Reliability Score
63%
Arrive within 15 minutes
22 min
Average arrival delay
0.6%
Cancelled
3 min early
Median arrival delay

Based on 359 historical flights. Data through May 2026.

What the data says

Thursdays have been rough.

F9 690 arrived on time 80% of the time on Saturdays and just 51% on Thursdays. That gap is worth planning around.

Well behind the DEN–DCA route.

F9 690 arrived on time 63% of the time, versus 81% across the DEN–DCA route.

Lagging the Frontier Airlines network.

F9 690 arrived on time 63% of the time, versus 73% across the Frontier Airlines network.

Recent months have been rougher.

F9 690 arrived on time 65% of the time over the last three months in the data, compared with 73% in the three months before that.

The breakdown

On-time by weekday
  • Mon56%(52 flights)
  • Tue74%(49 flights)
  • Wed57%(49 flights)
  • Thu51%(51 flights)
  • Fri67%(52 flights)
  • Sat80%(51 flights)
  • Sun59%(53 flights)
On-time by departure window
  • 12–3 PM—(3 flights)
  • 3–6 PM64%(354 flights)
On-time trend by month
65%
May

Jun 40% → May 65% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202540%30
July 202543%30
August 202548%31
September 202563%30
October 202577%31
November 202573%30
December 202586%28
January 202664%28
February 202670%27
March 202665%31
April 202667%30
May 202665%31
Departures on time
61%
Diverted
0%
Flights flown
357
Months covered
12

Same route, other flights

Keep nerding

Based on 359 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.