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

Connect in the morning. The same 75-minute layover misses 2% of the time at 9 am and 22% of the time at 6 pm.

Nonstops (seasonal or thin)


United	COS	IAH	2h 31m	88%	0.4%	721	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.


United Details →	COS 05:30 → DEN 06:35UA 4697 · flown by SkyWest	1h 07m Denver	DEN 07:42 → IAH 11:15UA 1720	4h 45m	90%	82%
Delta Details →	COS 06:00 → ATL 10:54DL 1074	1h 36m Atlanta	ATL 12:30 → IAH 13:38DL 1572	6h 38m	96%	81%
United Details →	COS 10:23 → DEN 11:38UA 5400 · flown by SkyWest	3h 57m Denver	DEN 15:35 → IAH 19:10UA 489	7h 47m	99%	77%
United Details →	COS 07:05 → DEN 08:10UA 4696 · flown by SkyWest	3h 24m Denver	DEN 11:34 → IAH 15:09UA 1599	7h 04m	100%	77%
United Details →	COS 11:31 → DEN 12:45UA 4675 · flown by SkyWest	3h 35m Denver	DEN 16:20 → IAH 19:57UA 588	7h 26m	99%	75%
United Details →	COS 08:45 → DEN 10:02UA 4725 · flown by SkyWest	3h 28m Denver	DEN 13:30 → IAH 17:04UA 1829	7h 19m	99%	72%
United Details →	COS 17:07 → DEN 18:20UA 4719 · flown by SkyWest	2h 08m Denver	DEN 20:28 → IAH 23:59UA 2419	5h 52m	90%	70%
United Details →	COS 12:11 → ORD 15:56UA 1398	1h 49m Chicago	ORD 17:45 → IAH 20:50UA 1954	7h 39m	94%	69%
Tight connection: often missed
United Details →	COS 15:02 → DEN 16:15UA 4657 · flown by SkyWest	1h 03m Denver	DEN 17:18 → IAH 20:55UA 1585	4h 53m	67%	48%
American Details →	COS 17:15 → DFW 20:19AA 4956 · flown by SkyWest	51m Dallas-Fort Worth	DFW 21:10 → IAH 22:24AA 2209	4h 09m	58%	26%

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.

Morning

DEN · 1h 15m · leaves 07:45 2%

DFW · 1h 02m · leaves 08:01 7%

Afternoon and evening

DEN · 1h 03m · leaves 15:02 33%

DFW · 51m · leaves 17:15 42%

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.


Delta DL 3940 COS 08:14 → SLC United UA 497 SLC 13:00 → IAH Connection details →	2h 45m	7h 58m	99%	79%
Southwest WN 4325 COS 11:10 → DEN United UA 489 DEN 15:35 → IAH Connection details →	3h 30m	7h 00m	100%	78%
American AA 6408 COS 05:35 → DFW United UA 539 DFW 11:59 → IAH Connection details →	3h 22m	6h 42m	90%	74%

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