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

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

No clear winner: Frontier’s PHX → IAH flights land within a few points of 4 in 5 on time whatever the hour.

Best time to leave 9–10 am 84% arrive on time from PHX

Best single flight F9 4184 PHX 09:04 → IAH 13:59 · 78% 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).

PHX

% 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 4184	PHX 09:04	IAH 13:59	78%

All 2 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 4184	PHX 09:04	IAH 13:59	2h 55m	154	78%	0.6%	52 min
F9 1704	PHX 09:15	IAH 13:56	2h 41m	135	83%	0.7%	76 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	PHX	IAH	2h 55m	80%	0.7%	291	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