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 13% of the time at 8 am and barely half the time at 9 pm.

Nonstops


Delta	ATL	LAS	4h 18m	78%	0.6%	3,322	Flying now
Southwest	ATL	LAS	4h 30m	76%	0.4%	719	Flying now
Frontier	ATL	LAS	4h 28m	65%	2.4%	576	Flying now
Spirit	ATL	LAS	4h 36m	81%	0.6%	156	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Las Vegas on time. Total trip = scheduled departure to arrival, layover included (Las Vegas is 3 h behind Atlanta). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	ATL 06:00 → AUS 07:20WN 4363	2h 02m Austin	AUS 09:22 → LAS 10:08WN 322	7h 07m	100%	92%
United Details →	ATL 09:25 → IAD 11:15UA 632	1h 45m Dulles	IAD 13:00 → LAS 15:09UA 2156	8h 44m	97%	87%
American Details →	ATL 05:20 → MIA 07:15AA 1135	2h 10m Miami	MIA 09:25 → LAS 11:41AA 2010	9h 21m	93%	87%
United Details →	ATL 07:05 → IAH 08:15UA 532	3h 40m Houston	IAH 11:55 → LAS 13:13UA 1524	9h 08m	99%	86%
Southwest Details →	ATL 07:05 → TPA 08:30WN 244	2h 00m Tampa	TPA 10:30 → LAS 12:10WN 1809	8h 05m	100%	84%
American Details →	ATL 07:48 → PHX 09:00AA 1777	1h 24m Phoenix	PHX 10:24 → LAS 11:37AA 2037	6h 49m	93%	84%
Delta Details →	ATL 09:55 → MSP 11:30DL 2090	3h 21m Minneapolis	MSP 14:51 → LAS 16:10DL 1542	9h 15m	99%	84%
United Details →	ATL 06:07 → EWR 08:25UA 299	4h 00m Newark	EWR 12:25 → LAS 14:53UA 1864	11h 46m	100%	84%
Tight connection: often missed
Delta Details →	ATL 17:30 → SNA 19:06DL 2012	1h 02m Santa Ana	SNA 20:08 → LAS 21:26DL 4179 · flown by SkyWest	6h 56m	72%	58%
Delta Details →	ATL 16:31 → MSP 18:09DL 2654	50m Minneapolis	MSP 18:59 → LAS 20:24DL 2246	6h 49m	60%	40%
American Details →	ATL 18:13 → PHX 19:25AA 3012	1h 11m Phoenix	PHX 20:36 → LAS 21:43AA 2106	6h 30m	54%	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

DAL · 1h 10m · leaves 06:30 4%

MSP · 1h 08m · leaves 08:26 6%

SLC · 1h 20m · leaves 08:15 7%

Afternoon and evening

ORD · 49m · leaves 19:43 63%

DEN · 55m · leaves 18:20 67%

MIA · 50m · leaves 19:00 76%

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.


Delta DL 4707 ATL 09:55 → SGF Allegiant G4 85 SGF 13:21 → LAS Connection details →	2h 29m	7h 32m	99%	86%
Delta DL 481 ATL 14:32 → SEA Alaska AS 704 SEA 20:15 → LAS Connection details →	3h 26m	11h 23m	99%	86%
Delta DL 1324 ATL 07:43 → IAD United UA 2156 IAD 13:00 → LAS Connection details →	3h 34m	10h 26m	99%	86%

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