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 75-minute layover misses 1% of the time at 9 am and 1 time in 4 at 8 pm.

Nonstops


Delta	DEN	SLC	1h 36m	84%	0.4%	1,697	Flying now
Frontier	DEN	SLC	1h 37m	83%	0.3%	1,023	Flying now
United	DEN	SLC	1h 40m	80%	0.4%	2,706	Flying now
Southwest	DEN	SLC	1h 35m	74%	0.4%	2,307	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 →	DEN 05:15 → SFO 06:53UA 2367	1h 47m San Francisco	SFO 08:40 → SLC 11:49UA 5605 · flown by SkyWest	6h 34m	98%	93%
Alaska Details →	DEN 06:00 → SAN 07:34AS 1617	1h 21m San Diego	SAN 08:55 → SLC 12:09AS 3122 · flown by SkyWest	6h 09m	98%	92%
Southwest Details →	DEN 05:45 → LAS 06:40WN 3106	55m Las Vegas	LAS 07:35 → SLC 10:00WN 2957	4h 15m	100%	91%
United Details →	DEN 08:00 → LAX 09:32UA 1638	3h 23m Los Angeles	LAX 12:55 → SLC 15:48UA 5371 · flown by SkyWest	7h 48m	100%	89%
Alaska Details →	DEN 08:00 → PDX 09:46AS 1626	1h 09m Portland	PDX 10:55 → SLC 13:59AS 3112 · flown by SkyWest	5h 59m	95%	88%
Delta Details →	DEN 06:00 → MSP 08:59DL 1129	3h 30m Minneapolis	MSP 12:29 → SLC 14:22DL 2651	8h 22m	99%	87%
United Details →	DEN 15:43 → LAX 17:15UA 1195	3h 04m Los Angeles	LAX 20:19 → SLC 23:11UA 5744 · flown by SkyWest	7h 28m	99%	87%
Delta Details →	DEN 07:30 → LAX 09:00DL 2002	2h 41m Los Angeles	LAX 11:41 → SLC 14:30DL 1194	7h 04m	97%	87%
Tight connection: often missed
American Details →	DEN 14:22 → ORD 18:16AA 1760	1h 23m Chicago	ORD 19:39 → SLC 22:14AA 3133	7h 52m	70%	37%
Southwest Details →	DEN 18:55 → PHX 19:50WN 1683	1h 40m Phoenix	PHX 21:30 → SLC 00:10 +1WN 4792	5h 10m	60%	35%
American Details →	DEN 18:10 → DFW 21:18AA 1322	1h 34m Dallas-Fort Worth	DFW 22:52 → SLC 00:36 +1AA 2378	6h 26m	69%	29%

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

IAH · 1h 13m · leaves 05:00 1%

ATL · 1h 12m · leaves 05:45 4%

PDX · 1h 09m · leaves 08:00 5%

Afternoon and evening

LAS · 1h 15m · leaves 17:30 38%

MDW · 1h 05m · leaves 17:35 71%

PHX · 50m · leaves 21:00 75%

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 446 DEN 07:55 → TUS Delta DL 3718 TUS 11:16 → SLC Connection details →	2h 16m	6h 22m	100%	97%
Southwest WN 1667 DEN 09:35 → PDX Alaska AS 3120 PDX 14:30 → SLC Connection details →	3h 20m	7h 54m	100%	96%
Southwest WN 1660 DEN 07:50 → ONT Delta DL 3172 ONT 13:00 → SLC Connection details →	3h 50m	7h 57m	100%	95%

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