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2,452 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

United is clearly ahead here: 85% of its flights arrive on time, 17 points better than Southwest.

Best time to leave 1–2 pm 88% arrive on time from DEN
Best single flight UA 5311 DEN 13:40 → TUL 16:29 · 90% on time Avoid UA 1937 DEN 17:37 → TUL 20:27 · 80% 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).

9
10
11
12
13
14
15
16
17
18
19
20
DEN
92
84
71
87
78
63
75
68
38
74
% 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 (incl. SkyWest) 1,516 85% 0.7% 70 min
Southwest 893 68% 1.2% 56 min
Frontier 43 – 0.0% 73 min

Dimmed: fewer than 150 flights in the year, too few to rank.

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 5311flown by SkyWest DEN 13:40 TUL 16:29 90%
UA 5315flown by SkyWest DEN 10:04 TUL 12:59 88%
UA 4712flown by SkyWest DEN 20:55 TUL 23:47 81%
UA 1937 DEN 17:37 TUL 20:27 80%

All 9 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.
UA 5315flown by SkyWest DEN 10:04 TUL 12:59 1h 55m 362 88% 0.0% 58 min
WN 2621 DEN 10:15 TUL 13:00 1h 45m 16 94% 0.0% 22 min
WN 1762 DEN 10:20 TUL 13:05 1h 45m 33 85% 0.0% 59 min
UA 5311flown by SkyWest DEN 13:40 TUL 16:29 1h 49m 361 90% 1.4% 64 min
UA 5280flown by SkyWest DEN 15:35 TUL 18:24 1h 49m 50 86% 0.0% 76 min
WN 4635 DEN 16:05 TUL 18:45 1h 35m 58 53% 0.0% 71 min
UA 1937 DEN 17:37 TUL 20:27 1h 50m 273 80% 1.1% 86 min
WN 1764 DEN 19:55 TUL 22:35 1h 42m 41 46% 9.8% 89 min
UA 4712flown by SkyWest DEN 20:55 TUL 23:47 1h 52m 204 81% 1.0% 82 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.
United DEN TUL 1h 49m 85% 0.7% 1,516 Flying now
Southwest DEN TUL 1h 35m 68% 1.2% 893 Flying now
Frontier DEN TUL 1h 35m 77% 0.0% 43 Not 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