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

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

Leave before 9 am: 85% depart on time. After 4 pm it’s 65%.

Best time to leave 8–9 am 84% arrive on time from IAH

Best single flight F9 1404 IAH 06:10 → ATL 09:41 · 68% on time Avoid F9 2400 IAH 20:02 → ATL 23:24 · 55% 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).

IAH

% 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 1404	IAH 06:10	ATL 09:41	68%
F9 2400	IAH 20:02	ATL 23:24	55%

All 4 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 1404	IAH 06:10	ATL 09:41	2h 26m	365	68%	2.5%	57 min
F9 4076	IAH 10:53	ATL 14:13	2h 20m	116	67%	1.7%	69 min
F9 2400	IAH 20:02	ATL 23:24	2h 22m	260	55%	2.7%	83 min
F9 4106	IAH 20:52	ATL 00:32	2h 22m	57	56%	8.8%	71 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	IAH	ATL	2h 22m	63%	2.9%	798	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