Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s COS → HOU flights land within a few points of 88% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	COS	HOU	2h 20m	88%	0.0%	193	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Houston on time. Total trip = scheduled departure to arrival, layover included (Houston is 1 h ahead of Colorado Springs). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	COS 05:45 → DEN 06:45WN 1220	3h 30m Denver	DEN 10:15 → HOU 13:55WN 1543	7h 10m	98%	79%
Southwest Details →	COS 05:10 → DAL 08:00WN 1218	2h 30m Dallas	DAL 10:30 → HOU 11:45WN 23	5h 35m	100%	78%
American Details →	COS 05:35 → DFW 08:37AA 6408 · flown by SkyWest	2h 14m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	5h 41m	90%	70%
American Details →	COS 08:01 → DFW 10:56AA 782	3h 26m Dallas-Fort Worth	DFW 14:22 → HOU 15:44AA 5002 · flown by SkyWest	6h 44m	98%	68%
Delta Details →	COS 13:40 → ATL 18:45DL 2427	1h 50m Atlanta	ATL 20:35 → HOU 21:43DL 2051	7h 03m	93%	66%
Southwest Details →	COS 06:45 → PHX 07:35WN 4256	2h 50m Phoenix	PHX 10:25 → HOU 15:05WN 3067	7h 20m	98%	65%
American Details →	COS 15:49 → DFW 18:50AA 1695	3h 54m Dallas-Fort Worth	DFW 22:44 → HOU 23:59AA 3394 · flown by Envoy	7h 10m	94%	65%
American Details →	COS 10:44 → DFW 13:36AA 1697	3h 20m Dallas-Fort Worth	DFW 16:56 → HOU 18:19AA 6385 · flown by SkyWest	6h 35m	97%	58%
Tight connection: often missed
American Details →	COS 10:44 → DFW 13:36AA 1697	46m Dallas-Fort Worth	DFW 14:22 → HOU 15:44AA 5002 · flown by SkyWest	4h 01m	69%	49%
American Details →	COS 13:07 → DFW 16:10AA 6390 · flown by SkyWest	46m Dallas-Fort Worth	DFW 16:56 → HOU 18:19AA 6385 · flown by SkyWest	4h 12m	73%	43%
Southwest Details →	COS 16:55 → DEN 17:45WN 1222	55m Denver	DEN 18:40 → HOU 22:15WN 606	4h 20m	33%	11%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Afternoon and evening

DFW · 46m · leaves 13:07 27%

DEN · 55m · leaves 16:55 67%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


United UA 4697 COS 05:30 → DEN Southwest WN 1543 DEN 10:15 → HOU Connection details →	3h 40m	7h 25m	100%	81%
United UA 4677 COS 07:45 → DEN Southwest WN 1544 DEN 12:30 → HOU Connection details →	3h 38m	7h 20m	100%	77%
United UA 4719 COS 17:07 → DEN Southwest WN 2026 DEN 20:45 → HOU Connection details →	2h 25m	6h 08m	85%	45%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

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