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 7% of the time at 10 am and 44% of the time at 6 pm.

Nonstops (seasonal or thin)


Delta	MIA	SLC	5h 04m	80%	0.5%	364	Flying now
American	MIA	SLC	5h 19m	75%	0.7%	432	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 2 h behind Miami). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	MIA 06:35 → MSP 09:25DL 1056	3h 04m Minneapolis	MSP 12:29 → SLC 14:22DL 2651	9h 47m	97%	86%
Delta Details →	MIA 06:00 → ATL 08:05DL 1249	2h 00m Atlanta	ATL 10:05 → SLC 12:10DL 387	8h 10m	97%	86%
Delta Details →	MIA 08:17 → ATL 10:20DL 1261	3h 35m Atlanta	ATL 13:55 → SLC 15:51DL 423	9h 36m	99%	84%
United Details →	MIA 07:37 → DEN 10:00UA 2045	3h 40m Denver	DEN 13:40 → SLC 15:13UA 1840	9h 36m	99%	84%
Delta Details →	MIA 07:10 → ATL 09:15DL 1211	2h 39m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 40m	98%	84%
Delta Details →	MIA 06:30 → SEA 10:00DL 2355	3h 30m Seattle	SEA 13:30 → SLC 16:40DL 1120	12h 10m	100%	83%
Delta Details →	MIA 14:40 → MSP 17:40DL 2129	2h 40m Minneapolis	MSP 20:20 → SLC 22:15DL 1051	9h 35m	97%	81%
Frontier Details →	MIA 06:50 → DFW 09:07F9 2135	3h 58m Dallas-Fort Worth	DFW 13:05 → SLC 14:55F9 3277	10h 12m	99%	79%
Tight connection: often missed
Delta Details →	MIA 16:00 → ATL 18:22DL 1579	1h 03m Atlanta	ATL 19:25 → SLC 21:30DL 660	7h 30m	68%	52%
American Details →	MIA 17:40 → PHX 19:28AA 2982	52m Phoenix	PHX 20:20 → SLC 23:03AA 4921 · flown by SkyWest	7h 23m	57%	42%
United Details →	MIA 16:10 → ORD 18:53UA 2106	1h 17m Chicago	ORD 20:10 → SLC 22:48UA 1710	8h 38m	73%	41%

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

JFK · 1h 10m · leaves 07:05 7%

DFW · 57m · leaves 05:25 10%

ATL · 50m · leaves 07:10 14%

Afternoon and evening

ATL · 1h 03m · leaves 16:00 32%

PHX · 52m · leaves 17:40 43%

DFW · 58m · leaves 15:30 44%

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.


American AA 713 MIA 07:07 → LAX United UA 5371 LAX 12:55 → SLC Connection details →	3h 21m	10h 41m	99%	88%
United UA 2045 MIA 07:37 → DEN Frontier F9 3981 DEN 13:18 → SLC Connection details →	3h 18m	9h 18m	99%	85%
American AA 1918 MIA 08:41 → IAH Delta DL 1532 IAH 14:20 → SLC Connection details →	3h 51m	9h 54m	99%	84%

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