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

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

No clear winner: Frontier’s PHX → SEA flights land within a few points of 85% on time whatever the hour.

Best time to leave 6–7 am 96% arrive on time from PHX

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.

No Frontier flight on this route ran 150+ times in the year.

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	SEA	3h 15m	85%	0.0%	139	Not flying now

Alternatives with one stop

All connections →


Frontier Details →	PHX 06:40 → DEN 09:37F9 1376	2h 23m Denver	DEN 12:00 → SEA 14:01F9 1175	7h 24m	98%	78%
Frontier Details →	PHX 11:35 → LAX 13:01F9 3303	2h 14m Los Angeles	LAX 15:15 → SEA 18:26F9 1177	6h 41m	96%	74%

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