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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

Pick an hour to see this route’s flights leaving then.

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