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

The best bet has a stop: Southwest via Denver (5h 05m) reaches Salt Lake City on time 88% of the time, against 70% on the nonstop.

Nonstops (seasonal or thin)


Southwest	MDW	SLC	3h 28m	71%	1.9%	619	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 Chicago). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	MDW 05:15 → DEN 06:50WN 2989	55m Denver	DEN 07:45 → SLC 09:20WN 452	5h 05m	98%	88%
Delta Details →	MDW 06:00 → ATL 08:55DL 1285	2h 59m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 50m	96%	81%
Southwest Details →	MDW 06:50 → DEN 08:20WN 2765	1h 45m Denver	DEN 10:05 → SLC 11:45WN 4027	5h 50m	100%	80%
Southwest Details →	MDW 05:20 → AUS 07:50WN 2726	1h 25m Austin	AUS 09:15 → SLC 11:00WN 403	6h 40m	100%	79%
Delta Details →	MDW 09:54 → MSP 11:35DL 5469 · flown by Endeavor	2h 50m Minneapolis	MSP 14:25 → SLC 16:16DL 2658	7h 26m	98%	78%
Delta Details →	MDW 11:05 → ATL 14:01DL 1063	3h 54m Atlanta	ATL 17:55 → SLC 19:58DL 653	9h 53m	99%	78%
Southwest Details →	MDW 16:55 → LAS 18:45WN 2797	2h 55m Las Vegas	LAS 21:40 → SLC 00:10 +1WN 4161	8h 10m	96%	74%
Delta Details →	MDW 12:50 → ATL 15:49DL 2417	3h 36m Atlanta	ATL 19:25 → SLC 21:30DL 660	9h 40m	98%	72%
Tight connection: often missed
Southwest Details →	MDW 05:20 → PHX 06:55WN 2858	50m Phoenix	PHX 07:45 → SLC 10:25WN 3339	6h 05m	74%	71%
Southwest Details →	MDW 18:35 → PHX 20:15WN 2862	1h 15m Phoenix	PHX 21:30 → SLC 00:10 +1WN 4792	6h 30m	65%	35%
Southwest Details →	MDW 16:55 → LAS 18:45WN 2797	1h 00m Las Vegas	LAS 19:45 → SLC 22:12WN 4225	6h 15m	54%	23%

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 · 55m · leaves 05:15 2%

ATL · 1h 10m · leaves 06:00 9%

MSP · 54m · leaves 09:54 13%

Afternoon and evening

PHX · 1h 15m · leaves 18:35 35%

LAS · 1h 00m · leaves 16:55 46%

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 2858 MDW 05:20 → PHX Delta DL 1447 PHX 09:45 → SLC Connection details →	2h 50m	8h 03m	100%	93%
Southwest WN 2809 MDW 10:05 → PDX Alaska AS 3120 PDX 14:30 → SLC Connection details →	2h 05m	8h 24m	96%	92%
Southwest WN 4637 MDW 05:10 → LAX Delta DL 1434 LAX 09:55 → SLC Connection details →	2h 30m	8h 40m	100%	91%

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