Showing Frontier only (incl. its regional partners)All airlines ×

983 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 3 in 5.

Best time to leave 6–7 am 98% arrive on time from DEN

Best single flight F9 686 DEN 07:30 → DCA 12:54 · 95% on time Avoid F9 690 DEN 16:27 → DCA 21:59 · 67% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

DEN

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


F9 686	DEN 07:30	DCA 12:54	95%
F9 688	DEN 11:26	DCA 16:59	78%
F9 690	DEN 16:27	DCA 21:59	67%

All 3 Frontier flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


F9 686	DEN 07:30	DCA 12:54	3h 24m	313	95%	0.6%	51 min
F9 688	DEN 11:26	DCA 16:59	3h 32m	312	78%	1.3%	78 min
F9 690	DEN 16:27	DCA 21:59	3h 31m	358	67%	0.3%	74 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Frontier	DEN	DCA	3h 31m	79%	0.7%	983	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON