About 1 in 7 F9 685 flights from Washington arrived 15+ minutes late, diverted or cancelled over the past year (15%); 0.8% were cancelled. The typical flight landed 9 minutes early.
F9 685: DCA → DEN
Scheduled to leave Washington at 7:00 a.m. local time. Over the past year it arrived on time 85% of the time (358 flights), in line with other F9 flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 85% |
| Tuesday | 49 | 80% |
| Wednesday | 49 | 82% |
| Thursday | 52 | 92% |
| Friday | 52 | 81% |
| Saturday | 52 | 90% |
| Sunday | 51 | 82% |
Why it was late
All flights DCA → DEN · Connecting off F9 685? Check the risk
Questions
How often is F9 685 from DCA to DEN late?
Frontier Airlines 685 from Washington, DC to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 15% of 358 scheduled flights between September 2025 and August 2026. 0.8% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Frontier Airlines for today's flight. Method.