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4,286 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 5–6 am 96% arrive on time from PDX
Best single flight UA 2375 PDX 08:50 → DEN 12:24 · 97% on time Avoid F9 1790 PDX 12:26 → DEN 16:08 · 82% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
PDX
97
91
92
95
96
78
85
82
72
65
81
79
59
81
68
% 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
Denver flights leaving PDX 5–6 am: 2Close ×
UA 459 PDX 05:00 DEN 08:31 2h 31m 358 97% 0.3% 114 min
WN 3195 PDX 05:50 DEN 09:15 2h 25m 57 93% 0.0% 44 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
United 1,824 91% 0.5% 75 min
Frontier 281 80% 0.4% 61 min
Alaska (incl. SkyWest) 626 80% 0.3% 53 min
Southwest 1,555 75% 0.2% 48 min

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.
UA 2375 PDX 08:50 DEN 12:24 97%
UA 459 PDX 05:00 DEN 08:31 97%
UA 2334 PDX 18:50 DEN 22:29 90%
AS 684 PDX 07:17 DEN 11:06 90%
UA 1411 PDX 12:50 DEN 16:28 88%
· · ·
UA 1787 PDX 16:15 DEN 19:51 85%
F9 1790 PDX 12:26 DEN 16:08 82%
All 21 flights on this route →

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.
United PDX DEN 2h 35m 91% 0.5% 1,824 Flying now
Frontier PDX DEN 2h 43m 80% 0.4% 281 Flying now
Alaska PDX DEN 2h 40m 80% 0.3% 626 Flying now
Southwest PDX DEN 2h 25m 75% 0.2% 1,555 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