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 2% of the time at 9 am and barely half the time at 10 pm.

Nonstops


United	LAS	ORD	3h 47m	80%	0.5%	2,337	Flying now
American	LAS	ORD	3h 49m	76%	2.3%	1,889	Flying now
Frontier	LAS	ORD	3h 48m	69%	3.9%	204	Flying now
Spirit	LAS	ORD	3h 38m	85%	2.0%	199	Not flying now
Southwest	LAS	ORD	3h 45m	69%	0.3%	608	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Chicago on time. Total trip = scheduled departure to arrival, layover included (Chicago is 2 h ahead of Las Vegas). Layovers up to 4 hours. Pick a connection for the details.


American Details →	LAS 23:45 → CLT 07:04AA 2751	3h 57m Charlotte	CLT 11:01 → ORD 12:19 +1AA 2908	10h 34m	100%	89%
United Details →	LAS 00:59 → IAH 05:59UA 2840	2h 06m Houston	IAH 08:05 → ORD 11:01UA 1617	8h 02m	97%	88%
American Details →	LAS 22:47 → JFK 07:00AA 2855	57m New York	JFK 07:57 → ORD 10:05 +1AA 4450 · flown by Republic	9h 18m	98%	88%
American Details →	LAS 19:25 → LAX 20:41AA 1399	3h 59m Los Angeles	LAX 00:40 → ORD 07:06 +1AA 2919	9h 41m	98%	84%
United Details →	LAS 19:52 → SFO 21:34UA 1267	3h 16m San Francisco	SFO 00:50 → ORD 07:16 +1UA 1850	9h 24m	97%	84%
United Details →	LAS 18:20 → SFO 20:02UA 1603	3h 28m San Francisco	SFO 23:30 → ORD 05:57 +1UA 368	9h 37m	98%	83%
American Details →	LAS 22:25 → MIA 06:30AA 1080	1h 58m Miami	MIA 08:28 → ORD 10:59 +1AA 1431	10h 34m	93%	82%
Alaska Details →	LAS 18:49 → SEA 21:34AS 1681	2h 43m Seattle	SEA 00:17 → ORD 06:20 +1AS 328	9h 31m	100%	82%
Tight connection: often missed
American Details →	LAS 13:08 → PHX 14:24AA 1466	1h 06m Phoenix	PHX 15:30 → ORD 21:30AA 2786	6h 24m	69%	39%
American Details →	LAS 16:34 → PHX 17:48AA 3186	1h 21m Phoenix	PHX 19:09 → ORD 00:51 +1AA 3137	6h 17m	68%	37%
United Details →	LAS 19:52 → SFO 21:34UA 1267	1h 04m San Francisco	SFO 22:38 → ORD 05:01 +1UA 2278	7h 09m	45%	36%

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 · 1h 03m · leaves 05:30 2%

JFK · 57m · leaves 22:47 2%

LAX · 1h 01m · leaves 06:00 3%

Afternoon and evening

CLT · 1h 03m · leaves 13:56 30%

DFW · 49m · leaves 12:47 42%

SFO · 1h 04m · leaves 19:52 55%

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 4590 LAS 22:50 → MCO United UA 2683 MCO 09:40 → ORD Connection details →	3h 15m	10h 58m	100%	94%
Frontier F9 2802 LAS 23:59 → DTW American AA 4103 DTW 10:33 → ORD Connection details →	3h 33m	9h 09m	98%	93%
Southwest WN 1192 LAS 17:25 → SEA American AA 2881 SEA 23:56 → ORD Connection details →	3h 46m	10h 37m	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