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 2% of the time at 9 am and 1 time in 3 at 7 pm.

Nonstops


Frontier	LAS	STL	3h 25m	84%	1.9%	309	Flying now
Southwest	LAS	STL	3h 10m	78%	0.1%	1,792	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach St Louis on time. Total trip = scheduled departure to arrival, layover included (St Louis is 2 h ahead of Las Vegas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	LAS 05:05 → DEN 07:55WN 2223	2h 10m Denver	DEN 10:05 → STL 13:20WN 1753	6h 15m	100%	96%
Southwest Details →	LAS 23:55 → MDW 05:25WN 2276	2h 25m Chicago	MDW 07:50 → STL 09:10 +1WN 2900	7h 15m	98%	93%
Southwest Details →	LAS 22:50 → MCO 06:25WN 4590	2h 25m Orlando	MCO 08:50 → STL 10:20 +1WN 4501	9h 30m	100%	93%
Delta Details →	LAS 06:00 → SLC 08:20DL 2674	1h 21m Salt Lake City	SLC 09:41 → STL 13:36DL 2455	5h 36m	98%	90%
Delta Details →	LAS 22:00 → ATL 05:00DL 879	2h 43m Atlanta	ATL 07:43 → STL 08:19 +1DL 1571	8h 19m	100%	88%
American Details →	LAS 23:20 → PHL 07:07AA 437	1h 53m Philadelphia	PHL 09:00 → STL 10:36 +1AA 2720	9h 15m	96%	87%
Southwest Details →	LAS 23:25 → BNA 05:00WN 2191	1h 15m Nashville	BNA 06:15 → STL 07:35 +1WN 679	6h 10m	91%	87%
American Details →	LAS 22:25 → MIA 06:30AA 1080	1h 53m Miami	MIA 08:23 → STL 10:24 +1AA 3954 · flown by Envoy	9h 59m	92%	86%
Tight connection: often missed
United Details →	LAS 13:36 → DEN 16:40UA 1323	54m Denver	DEN 17:34 → STL 20:43UA 1422	5h 07m	73%	52%
American Details →	LAS 14:02 → DFW 19:03AA 777	52m Dallas-Fort Worth	DFW 19:55 → STL 21:48AA 1010	5h 44m	66%	40%
American Details →	LAS 15:50 → ORD 22:00AA 2013	1h 00m Chicago	ORD 23:00 → STL 00:16 +1AA 1004	6h 26m	62%	32%

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 03m · leaves 05:30 2%

MDW · 1h 15m · leaves 06:10 4%

BNA · 1h 15m · leaves 23:25 9%

Afternoon and evening

PHX · 1h 04m · leaves 16:34 41%

DEN · 1h 15m · leaves 15:00 43%

BNA · 1h 08m · leaves 14:52 49%

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 596 LAS 05:30 → DEN Southwest WN 1753 DEN 10:05 → STL Connection details →	1h 33m	5h 50m	96%	92%
United UA 2102 LAS 23:30 → ORD American AA 4104 ORD 07:05 → STL Connection details →	1h 54m	7h 02m	94%	90%
Frontier F9 2016 LAS 00:59 → DEN Southwest WN 1373 DEN 07:20 → STL Connection details →	3h 27m	7h 26m	97%	88%

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