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	SAT	2h 51m	83%	0.7%	290	Flying now
Southwest	LAS	SAT	2h 35m	73%	0.2%	1,552	Flying now
Spirit	LAS	SAT	2h 42m	84%	0.5%	182	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	LAS 05:30 → DEN 08:32UA 596	1h 03m Denver	DEN 09:35 → SAT 12:43UA 2625	5h 13m	98%	90%
Southwest Details →	LAS 06:05 → SAN 07:15WN 4342	1h 35m San Diego	SAN 08:50 → SAT 13:40WN 2499	5h 35m	98%	88%
Southwest Details →	LAS 23:25 → BNA 05:00WN 2191	3h 00m Nashville	BNA 08:00 → SAT 10:20 +1WN 663	8h 55m	100%	88%
United Details →	LAS 00:59 → IAH 05:59UA 2840	3h 40m Houston	IAH 09:39 → SAT 10:46UA 6201 · flown by Mesa	7h 47m	97%	86%
Delta Details →	LAS 06:48 → LAX 08:00DL 553	1h 55m Los Angeles	LAX 09:55 → SAT 14:52DL 2568	6h 04m	98%	85%
Southwest Details →	LAS 12:30 → PHX 13:50WN 2311	2h 15m Phoenix	PHX 16:05 → SAT 20:15WN 1230	5h 45m	98%	85%
United Details →	LAS 09:37 → DEN 12:41UA 1315	1h 03m Denver	DEN 13:44 → SAT 16:55UA 1022	5h 18m	95%	85%
Delta Details →	LAS 23:10 → DTW 06:04DL 502	2h 21m Detroit	DTW 08:25 → SAT 10:34 +1DL 788	9h 24m	94%	81%
Tight connection: often missed
American Details →	LAS 15:23 → DFW 20:24AA 2376	1h 31m Dallas-Fort Worth	DFW 21:55 → SAT 23:04AA 3097	5h 40m	72%	33%
American Details →	LAS 14:02 → DFW 19:03AA 777	52m Dallas-Fort Worth	DFW 19:55 → SAT 21:03AA 546	5h 01m	66%	30%
American Details →	LAS 16:53 → DFW 21:49AA 3286	1h 01m Dallas-Fort Worth	DFW 22:50 → SAT 23:58AA 1599	5h 05m	66%	24%

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%

IAH · 57m · leaves 06:00 7%

SEA · 53m · leaves 06:02 9%

Afternoon and evening

DEN · 59m · leaves 13:36 24%

DFW · 1h 01m · leaves 16:53 34%

SAN · 1h 05m · leaves 18:05 85%

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 2039 LAS 06:00 → LAX American AA 6307 LAX 09:28 → SAT Connection details →	2h 14m	6h 36m	99%	92%
Southwest WN 2223 LAS 05:05 → DEN United UA 2625 DEN 09:35 → SAT Connection details →	1h 40m	5h 38m	95%	87%
Southwest WN 2957 LAS 07:35 → SLC Delta DL 2680 SLC 13:25 → SAT Connection details →	3h 25m	7h 38m	100%	85%

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