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 one-hour layover misses 1 time in 10 at 7 am and 1 time in 4 at 4 pm.

Nonstops (seasonal or thin)


Southwest	COS	LAS	2h 00m	81%	0.0%	861	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Las Vegas on time. Total trip = scheduled departure to arrival, layover included (Las Vegas is 1 h behind 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 30m Denver	DEN 08:05 → LAS 09:07UA 2316	4h 37m	95%	89%
Southwest Details →	COS 05:45 → DEN 06:45WN 1220	55m Denver	DEN 07:40 → LAS 08:35WN 1559	3h 50m	96%	84%
United Details →	COS 07:05 → DEN 08:10UA 4696 · flown by SkyWest	3h 12m Denver	DEN 11:22 → LAS 12:24UA 526	6h 19m	99%	82%
Delta Details →	COS 18:20 → SLC 20:16DL 4449 · flown by SkyWest	2h 58m Salt Lake City	SLC 23:14 → LAS 23:40DL 1662	6h 24m	99%	79%
United Details →	COS 11:31 → DEN 12:45UA 4675 · flown by SkyWest	3h 15m Denver	DEN 16:00 → LAS 17:03UA 716	6h 32m	99%	76%
United Details →	COS 07:30 → IAH 11:03UA 4029 · flown by Mesa	52m Houston	IAH 11:55 → LAS 13:13UA 1524	6h 43m	85%	75%
Delta Details →	COS 08:14 → SLC 10:15DL 3940 · flown by SkyWest	1h 20m Salt Lake City	SLC 11:35 → LAS 12:02DL 1659	4h 48m	98%	74%
United Details →	COS 12:06 → IAH 15:35UA 4030 · flown by Mesa	1h 58m Houston	IAH 17:33 → LAS 18:51UA 2658	7h 45m	88%	68%
Tight connection: often missed
United Details →	COS 15:02 → DEN 16:15UA 4657 · flown by SkyWest	1h 31m Denver	DEN 17:46 → LAS 18:50UA 2338	4h 48m	74%	47%
American Details →	COS 13:07 → DFW 16:10AA 6390 · flown by SkyWest	48m Dallas-Fort Worth	DFW 16:58 → LAS 17:48AA 2864	5h 41m	74%	44%
American Details →	COS 17:15 → DFW 20:19AA 4956 · flown by SkyWest	1h 15m Dallas-Fort Worth	DFW 21:34 → LAS 22:25AA 2872	6h 10m	70%	27%

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

SLC · 1h 20m · leaves 08:14 2%

DEN · 55m · leaves 05:45 4%

IAH · 52m · leaves 07:30 15%

Afternoon and evening

DFW · 1h 15m · leaves 17:15 30%

PHX · 1h 00m · leaves 20:55 35%

DEN · 1h 15m · leaves 16:55 52%

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.


Southwest WN 4256 COS 06:45 → PHX American AA 2037 PHX 10:24 → LAS Connection details →	2h 49m	5h 52m	98%	89%
United UA 5291 COS 06:00 → DEN Southwest WN 1561 DEN 11:00 → LAS Connection details →	3h 55m	6h 55m	99%	82%
United UA 4697 COS 05:30 → DEN Frontier F9 1993 DEN 10:25 → LAS Connection details →	3h 50m	6h 59m	100%	81%

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