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 3% of the time at 9 am and 13% of the time at 10 pm.

Nonstops


Frontier	STL	LAS	3h 35m	77%	2.6%	309	Flying now
Southwest	STL	LAS	3h 35m	77%	0.3%	1,785	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 2 h behind St Louis). Layovers up to 4 hours. Pick a connection for the details.


United Details →	STL 05:10 → DEN 06:32UA 362	1h 33m Denver	DEN 08:05 → LAS 09:07UA 2316	5h 57m	98%	91%
Southwest Details →	STL 05:05 → MCO 08:25WN 4358	1h 35m Orlando	MCO 10:00 → LAS 11:45WN 4696	8h 40m	100%	88%
United Details →	STL 06:14 → IAH 08:31UA 6283 · flown by Mesa	3h 24m Houston	IAH 11:55 → LAS 13:13UA 1524	8h 59m	99%	87%
United Details →	STL 06:00 → ORD 07:30UA 2805	3h 30m Chicago	ORD 11:00 → LAS 13:05UA 2440	9h 05m	97%	85%
Alaska Details →	STL 14:50 → SEA 17:17AS 618	2h 58m Seattle	SEA 20:15 → LAS 22:55AS 704	10h 05m	98%	85%
United Details →	STL 08:35 → IAH 10:50UA 4579 · flown by GoJet	3h 30m Houston	IAH 14:20 → LAS 15:37UA 1971	9h 02m	100%	85%
Southwest Details →	STL 05:45 → DEN 07:00WN 3909	4h 00m Denver	DEN 11:00 → LAS 11:55WN 1561	8h 10m	100%	83%
Southwest Details →	STL 05:05 → TPA 08:25WN 3985	2h 05m Tampa	TPA 10:30 → LAS 12:10WN 1809	9h 05m	98%	83%
Tight connection: often missed
Delta Details →	STL 15:57 → MSP 17:40DL 4167 · flown by SkyWest	1h 19m Minneapolis	MSP 18:59 → LAS 20:24DL 2246	6h 23m	74%	50%
American Details →	STL 17:48 → PHL 21:10AA 2714	1h 03m Philadelphia	PHL 22:13 → LAS 00:32 +1AA 3250	8h 44m	74%	44%
United Details →	STL 19:23 → SFO 21:43UA 2482	1h 16m San Francisco	SFO 22:59 → LAS 00:46 +1UA 2839	7h 23m	44%	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

ATL · 1h 17m · leaves 06:00 3%

MSP · 1h 16m · leaves 06:21 4%

DFW · 56m · leaves 05:30 9%

Afternoon and evening

DEN · 1h 15m · leaves 14:05 28%

ATL · 1h 10m · leaves 16:25 47%

SFO · 1h 16m · leaves 19:23 56%

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 3967 STL 05:45 → PHX American AA 2037 PHX 10:24 → LAS Connection details →	3h 29m	7h 52m	100%	90%
Southwest WN 3937 STL 08:10 → LAX United UA 2741 LAX 13:12 → LAS Connection details →	3h 07m	8h 24m	100%	83%
Southwest WN 3909 STL 05:45 → DEN Frontier F9 1993 DEN 10:25 → LAS Connection details →	3h 25m	7h 44m	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