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 HOU → SLC flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	HOU	SLC	3h 15m	81%	0.5%	409	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Salt Lake City on time. Total trip = scheduled departure to arrival, layover included (Salt Lake City is 1 h behind Houston). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	HOU 05:30 → LAS 06:30WN 2251	1h 05m Las Vegas	LAS 07:35 → SLC 10:00WN 2957	5h 30m	97%	89%
Delta Details →	HOU 06:00 → ATL 09:05DL 2557	2h 49m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 50m	99%	85%
Southwest Details →	HOU 06:20 → PHX 06:55WN 2062	50m Phoenix	PHX 07:45 → SLC 10:25WN 3339	5h 05m	88%	83%
Southwest Details →	HOU 05:30 → DEN 06:55WN 1970	50m Denver	DEN 07:45 → SLC 09:20WN 452	4h 50m	91%	82%
Southwest Details →	HOU 06:25 → MDW 08:50WN 2039	1h 12m Chicago	MDW 10:02 → SLC 12:28WN 2951	7h 02m	100%	80%
Delta Details →	HOU 10:16 → ATL 13:20DL 1509	2h 04m Atlanta	ATL 15:24 → SLC 17:24DL 526	8h 08m	97%	76%
Delta Details →	HOU 13:10 → ATL 16:18DL 1195	3h 07m Atlanta	ATL 19:25 → SLC 21:30DL 660	9h 20m	96%	73%
Southwest Details →	HOU 18:25 → LAS 19:35WN 2003	2h 05m Las Vegas	LAS 21:40 → SLC 00:10 +1WN 4161	6h 40m	94%	73%
Tight connection: often missed
American Details →	HOU 16:14 → DFW 17:38AA 5002 · flown by SkyWest	1h 10m Dallas-Fort Worth	DFW 18:48 → SLC 20:34AA 558	5h 20m	62%	29%
American Details →	HOU 18:49 → DFW 20:15AA 6385 · flown by SkyWest	55m Dallas-Fort Worth	DFW 21:10 → SLC 22:59AA 2993	5h 10m	52%	21%
Southwest Details →	HOU 17:55 → DEN 19:40WN 1974	1h 15m Denver	DEN 20:55 → SLC 22:40WN 1737	5h 40m	39%	16%

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

LAX · 1h 20m · leaves 07:30 2%

DEN · 50m · leaves 05:30 9%

ATL · 1h 00m · leaves 06:00 10%

Afternoon and evening

DFW · 55m · leaves 18:49 48%

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 2056 HOU 07:35 → OAK Delta DL 4134 OAK 12:33 → SLC Connection details →	3h 03m	8h 54m	100%	93%
Southwest WN 1943 HOU 07:35 → ABQ Delta DL 4084 ABQ 12:25 → SLC Connection details →	3h 45m	7h 41m	97%	91%
Southwest WN 2007 HOU 07:30 → LAX United UA 5371 LAX 12:55 → SLC Connection details →	4h 00m	9h 18m	100%	89%

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