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 DAL → LAS flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops


Southwest	DAL	LAS	2h 55m	75%	1.2%	2,857	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 Dallas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	DAL 17:50 → SAN 18:45WN 40	3h 55m San Diego	SAN 22:40 → LAS 00:12 +1WN 3510	8h 22m	100%	92%
Southwest Details →	DAL 06:00 → PHX 06:28WN 1379	1h 02m Phoenix	PHX 07:30 → LAS 08:40WN 2336	4h 40m	98%	91%
Southwest Details →	DAL 06:05 → MCI 07:35WN 4631	2h 10m Kansas City	MCI 09:45 → LAS 10:45WN 4532	6h 40m	98%	84%
Southwest Details →	DAL 06:00 → DEN 07:00WN 1296	4h 00m Denver	DEN 11:00 → LAS 11:55WN 1561	7h 55m	100%	83%
Southwest Details →	DAL 06:10 → TPA 09:35WN 1415	55m Tampa	TPA 10:30 → LAS 12:10WN 1809	8h 00m	96%	81%
Southwest Details →	DAL 07:40 → SMF 09:15WN 4218	1h 35m Sacramento	SMF 10:50 → LAS 12:20WN 1285	6h 40m	88%	81%
Southwest Details →	DAL 06:00 → HOU 07:10WN 1628	3h 35m Houston	HOU 10:45 → LAS 11:55WN 652	7h 55m	100%	81%
Southwest Details →	DAL 06:10 → SAN 07:05WN 1393	2h 40m San Diego	SAN 09:45 → LAS 11:10WN 2695	7h 00m	100%	81%
Tight connection: often missed
Southwest Details →	DAL 11:55 → BUR 13:05WN 4076	55m Burbank	BUR 14:00 → LAS 15:10WN 790	5h 15m	59%	42%
Southwest Details →	DAL 17:55 → DEN 19:25WN 1303	1h 10m Denver	DEN 20:35 → LAS 21:30WN 1566	5h 35m	58%	24%
Southwest Details →	DAL 17:50 → SAN 18:45WN 40	1h 20m San Diego	SAN 20:05 → LAS 21:30WN 1169	5h 40m	65%	13%

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

TPA · 55m · leaves 06:10 4%

MSY · 1h 10m · leaves 07:00 12%

HOU · 1h 00m · leaves 08:30 16%

Afternoon and evening

HOU · 1h 10m · leaves 20:30 21%

DEN · 1h 10m · leaves 17:55 42%

SAT · 1h 00m · leaves 18:30 43%

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 1379 DAL 06:00 → PHX American AA 2037 PHX 10:24 → LAS Connection details →	3h 56m	7h 37m	100%	88%
Southwest WN 1394 DAL 11:50 → SAN Delta DL 3751 SAN 15:51 → LAS Connection details →	3h 06m	7h 36m	100%	82%
Southwest WN 1296 DAL 06:00 → DEN Frontier F9 1993 DEN 10:25 → LAS Connection details →	3h 25m	7h 29m	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