3,043 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 3 in 5.

Best time to leave 9–10 am 91% arrive on time from DEN

Best single flight UA 2625 DEN 09:35 → SAT 12:43 · 92% on time Avoid F9 2356 DEN 15:40 → SAT 18:56 · 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).

DEN

% 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

San Antonio flights leaving DEN 8–9 pm: 1Close ×


UA 395	DEN 20:39	SAT 23:55	2h 16m	71	66%	0.0%	90 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 (incl. SkyWest)	1,222	84%	0.2%	74 min
Frontier	385	81%	0.3%	61 min
Southwest	1,436	72%	0.3%	52 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 2625	DEN 09:35	SAT 12:43	92%
UA 1022	DEN 13:44	SAT 16:55	90%
F9 2356	DEN 15:40	SAT 18:56	82%

All 11 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	DEN	SAT	2h 15m	84%	0.2%	1,222	Flying now
Frontier	DEN	SAT	2h 17m	81%	0.3%	385	Flying now
Southwest	DEN	SAT	2h 10m	72%	0.3%	1,436	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