Flight Reliability
F9 689 · Frontier Airlines
Washington → Denver (DCA–DEN)
57
A Little Dicey
WanderNerd Reliability Score
- 64%
- Arrive within 15 minutes
- 29 min
- Average arrival delay
- 1.3%
- Cancelled
- 2 min
- Median arrival delay
Based on 306 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
F9 689 arrived on time 78% of the time on Saturdays and just 52% on Wednesdays. That gap is worth planning around.
Well behind the DCA–DEN route.
F9 689 arrived on time 64% of the time, versus 79% across the DCA–DEN route.
Lagging the Frontier Airlines network.
F9 689 arrived on time 64% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon55%(51 flights)
- Tue60%(25 flights)
- Wed52%(23 flights)
- Thu53%(51 flights)
- Fri63%(51 flights)
- Sat78%(50 flights)
- Sun77%(51 flights)
85%
May
Jun 39% → May 85% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 39% | 26 |
| July 2025 | 32% | 25 |
| August 2025 | 58% | 26 |
| September 2025 | 62% | 26 |
| October 2025 | 77% | 26 |
| November 2025 | 67% | 27 |
| December 2025 | 81% | 26 |
| January 2026 | 72% | 25 |
| February 2026 | 62% | 21 |
| March 2026 | 67% | 24 |
| April 2026 | 61% | 23 |
| May 2026 | 85% | 27 |
- Departures on time
- 69%
- Diverted
- 0%
- Flights flown
- 302
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 306 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.