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: 3 in 4 depart on time. After 4 pm it’s barely half.

Best time to leave 6–7 am 82% arrive on time from ATL

Best single flight F9 1403 ATL 06:07 → IAH 07:23 · 76% on time Avoid F9 4075 ATL 21:25 → IAH 22:48 · 63% 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).

ATL

% 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 1403	ATL 06:07	IAH 07:23	76%
F9 4075	ATL 21:25	IAH 22:48	63%

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 1403	ATL 06:07	IAH 07:23	2h 16m	325	76%	1.2%	82 min
F9 2399	ATL 08:45	IAH 10:07	2h 22m	136	79%	1.5%	55 min
F9 4075	ATL 21:25	IAH 22:48	2h 23m	334	63%	2.7%	92 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	ATL	IAH	2h 22m	71%	1.9%	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