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 3% of the time at 8 am and almost half the time at 3 pm.

Nonstops


United	LAS	DEN	2h 00m	85%	0.4%	2,388	Flying now
Frontier	LAS	DEN	2h 06m	78%	1.0%	1,595	Flying now
Southwest	LAS	DEN	1h 55m	72%	1.0%	3,119	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Denver on time. Total trip = scheduled departure to arrival, layover included (Denver is 1 h ahead of Las Vegas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	LAS 05:00 → OAK 06:30WN 2282	1h 50m Oakland	OAK 08:20 → DEN 11:45WN 3042	5h 45m	100%	100%
Southwest Details →	LAS 07:18 → SMF 08:48WN 2359	1h 27m Sacramento	SMF 10:15 → DEN 13:35WN 3774	5h 17m	100%	96%
Southwest Details →	LAS 06:30 → RNO 07:50WN 2319	2h 40m Reno	RNO 10:30 → DEN 13:40WN 3716	6h 10m	98%	94%
United Details →	LAS 06:00 → LAX 07:14UA 2039	3h 41m Los Angeles	LAX 10:55 → DEN 14:27UA 2061	7h 27m	100%	90%
United Details →	LAS 14:15 → LAX 15:35UA 2184	3h 10m Los Angeles	LAX 18:45 → DEN 22:15UA 2610	7h 00m	97%	89%
Southwest Details →	LAS 06:30 → BUR 07:38WN 2196	57m Burbank	BUR 08:35 → DEN 11:50WN 351	4h 20m	91%	87%
Southwest Details →	LAS 07:35 → SLC 10:00WN 2957	2h 20m Salt Lake City	SLC 12:20 → DEN 13:50WN 1478	5h 15m	100%	85%
United Details →	LAS 23:59 → ORD 05:40UA 726	1h 25m Chicago	ORD 07:05 → DEN 08:55 +1UA 1217	7h 56m	93%	85%
Tight connection: often missed
United Details →	LAS 18:20 → SFO 20:02UA 1603	58m San Francisco	SFO 21:00 → DEN 00:47 +1UA 301	5h 27m	63%	54%
American Details →	LAS 13:08 → PHX 14:24AA 1466	1h 00m Phoenix	PHX 15:24 → DEN 18:16AA 1638	4h 08m	63%	44%
United Details →	LAS 13:34 → SFO 15:16UA 1799	54m San Francisco	SFO 16:10 → DEN 20:01UA 1430	5h 27m	51%	40%

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

SFO · 56m · leaves 06:00 3%

PHX · 1h 15m · leaves 06:20 4%

SAN · 1h 17m · leaves 06:05 7%

Afternoon and evening

OAK · 55m · leaves 17:10 43%

DAL · 1h 00m · leaves 13:20 45%

SFO · 56m · leaves 14:52 56%

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 2346 LAS 05:40 → SJC United UA 586 SJC 08:45 → DEN Connection details →	1h 45m	5h 43m	100%	97%
Southwest WN 3715 LAS 07:00 → SNA United UA 2843 SNA 10:20 → DEN Connection details →	2h 15m	5h 43m	98%	97%
Southwest WN 2359 LAS 07:18 → SMF United UA 1023 SMF 10:50 → DEN Connection details →	2h 02m	5h 59m	100%	92%

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