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

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

Leave before 9 am: 92% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 7–8 am 87% arrive on time from DCA

Best single flight F9 685 DCA 07:00 → DEN 09:07 · 86% on time Avoid F9 689 DCA 18:00 → DEN 20:07 · 68% 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).

DCA

% 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 685	DCA 07:00	DEN 09:07	86%
F9 687	DCA 13:59	DEN 15:54	84%
F9 689	DCA 18:00	DEN 20:07	68%

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 685	DCA 07:00	DEN 09:07	4h 07m	358	86%	0.8%	58 min
F9 687	DCA 13:59	DEN 15:54	3h 55m	319	84%	0.6%	56 min
F9 689	DCA 18:00	DEN 20:07	4h 07m	305	68%	1.3%	101 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	DCA	DEN	4h 07m	80%	0.9%	982	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