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

No clear winner: Delta’s SUN → SLC flights land within a few points of 94% on time whatever the hour.

Nonstops


Delta	SUN	SLC	1h 10m	94%	0.7%	1,078	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. Layovers up to 4 hours. Pick a connection for the details.


United Details →	SUN 08:00 → LAX 09:34UA 6053 · flown by SkyWest	3h 21m Los Angeles	LAX 12:55 → SLC 15:48UA 5371 · flown by SkyWest	7h 48m	92%	82%
United Details →	SUN 07:00 → DEN 08:58UA 5712 · flown by SkyWest	2h 42m Denver	DEN 11:40 → SLC 13:13UA 1963	6h 13m	96%	76%
Alaska Details →	SUN 10:20 → SEA 11:14AS 2325 · flown by Horizon	3h 31m Seattle	SEA 14:45 → SLC 17:48AS 368	7h 28m	100%	66%
United Details →	SUN 14:38 → DEN 16:45UA 5268 · flown by SkyWest	1h 00m Denver	DEN 17:45 → SLC 19:25UA 5762 · flown by SkyWest	4h 47m	79%	58%

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.

Afternoon and evening

DEN · 1h 00m · leaves 14:38 21%

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 6008 SUN 13:57 → LAX Delta DL 2973 LAX 19:15 → SLC Connection details →	3h 44m	8h 08m	99%	91%
United UA 6053 SUN 08:00 → LAX Delta DL 1194 LAX 11:41 → SLC Connection details →	2h 07m	6h 34m	92%	83%
Alaska AS 2325 SUN 10:20 → SEA Delta DL 1120 SEA 13:30 → SLC Connection details →	2h 16m	6h 20m	98%	82%

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