Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

The nonstop is quickest: Southwest DAL → SLC (2h 50m), on time 72% of the time. Southwest via Phoenix (5h 25m) is more reliable, 94%, but takes 2h 35m longer.

Nonstops (seasonal or thin)


Southwest	DAL	SLC	2h 50m	72%	1.0%	674	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 Dallas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	DAL 06:00 → PHX 06:28WN 1379	1h 17m Phoenix	PHX 07:45 → SLC 10:25WN 3339	5h 25m	100%	94%
Delta Details →	DAL 06:05 → ATL 09:15DL 516	2h 39m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 45m	97%	82%
Southwest Details →	DAL 06:00 → DEN 07:00WN 1296	3h 05m Denver	DEN 10:05 → SLC 11:45WN 4027	6h 40m	100%	80%
Southwest Details →	DAL 06:00 → MDW 08:15WN 1355	1h 47m Chicago	MDW 10:02 → SLC 12:28WN 2951	7h 27m	100%	80%
Delta Details →	DAL 10:09 → ATL 13:20DL 441	2h 04m Atlanta	ATL 15:24 → SLC 17:24DL 526	8h 15m	97%	77%
Delta Details →	DAL 12:19 → ATL 15:31DL 1115	2h 24m Atlanta	ATL 17:55 → SLC 19:58DL 653	8h 39m	96%	76%
Delta Details →	DAL 15:59 → ATL 19:14DL 512	3h 01m Atlanta	ATL 22:15 → SLC 00:26 +1DL 453	9h 20m	97%	71%
Southwest Details →	DAL 10:40 → LAS 11:25WN 486	2h 23m Las Vegas	LAS 13:48 → SLC 16:15WN 3310	6h 38m	95%	65%
Tight connection: often missed
Southwest Details →	DAL 15:20 → PHX 15:45WN 4129	1h 15m Phoenix	PHX 17:00 → SLC 19:35WN 4867	5h 15m	62%	28%
Southwest Details →	DAL 17:55 → DEN 19:25WN 1303	1h 30m Denver	DEN 20:55 → SLC 22:40WN 1737	5h 40m	69%	27%
Southwest Details →	DAL 13:40 → BNA 15:30WN 526	50m Nashville	BNA 16:20 → SLC 18:55WN 4791	6h 15m	40%	19%

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 20m · leaves 10:45 14%

ATL · 50m · leaves 06:05 16%

Afternoon and evening

PHX · 1h 15m · leaves 15:20 38%

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 1393 DAL 06:10 → SAN Delta DL 1177 SAN 09:47 → SLC Connection details →	2h 42m	7h 40m	100%	93%
Southwest WN 1326 DAL 06:00 → LAX Delta DL 1434 LAX 09:55 → SLC Connection details →	2h 45m	7h 50m	100%	91%
Southwest WN 1379 DAL 06:00 → PHX Delta DL 1447 PHX 09:45 → SLC Connection details →	3h 17m	7h 23m	100%	90%

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