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 6% of the time at 7 am and 27% of the time at 10 pm.

Nonstops


American	STL	LAX	4h 09m	76%	0.8%	354	Flying now
Southwest	STL	LAX	4h 05m	74%	0.0%	673	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Los Angeles on time. Total trip = scheduled departure to arrival, layover included (Los Angeles is 2 h behind St Louis). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	STL 05:45 → DEN 07:00WN 3909	2h 35m Denver	DEN 09:35 → LAX 11:05WN 1569	7h 20m	100%	91%
Delta Details →	STL 06:00 → ATL 08:38DL 1524	2h 52m Atlanta	ATL 11:30 → LAX 13:05DL 326	9h 08m	99%	90%
United Details →	STL 05:10 → DEN 06:32UA 362	3h 30m Denver	DEN 10:02 → LAX 11:34UA 405	8h 24m	100%	90%
United Details →	STL 09:06 → DEN 10:30UA 2459	2h 56m Denver	DEN 13:26 → LAX 14:57UA 774	7h 51m	99%	89%
American Details →	STL 05:10 → CLT 08:03AA 858	3h 53m Charlotte	CLT 11:56 → LAX 13:55AA 1213	10h 45m	99%	87%
Delta Details →	STL 07:08 → ATL 09:45DL 1536	2h 50m Atlanta	ATL 12:35 → LAX 14:15DL 895	9h 07m	99%	86%
Delta Details →	STL 06:21 → MSP 07:57DL 1597	3h 43m Minneapolis	MSP 11:40 → LAX 13:34DL 2119	9h 13m	99%	85%
Delta Details →	STL 11:18 → MSP 12:55DL 3188	2h 50m Minneapolis	MSP 15:45 → LAX 17:37DL 2114	8h 19m	100%	84%
Tight connection: often missed
United Details →	STL 13:13 → ORD 14:43UA 1382	1h 04m Chicago	ORD 15:47 → LAX 18:20UA 576	7h 07m	72%	52%
United Details →	STL 19:23 → SFO 21:43UA 2482	54m San Francisco	SFO 22:37 → LAX 00:19 +1UA 2179	6h 56m	21%	15%
Southwest Details →	STL 16:00 → DEN 17:20WN 3912	1h 25m Denver	DEN 18:45 → LAX 20:15WN 2217	6h 15m	74%	12%

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

PHX · 1h 00m · leaves 05:45 2%

MSP · 1h 20m · leaves 06:21 4%

SLC · 1h 18m · leaves 08:00 5%

Afternoon and evening

DFW · 1h 11m · leaves 19:22 52%

LAS · 1h 20m · leaves 19:40 59%

SFO · 54m · leaves 19:23 79%

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 3934 STL 06:00 → LAS United UA 203 LAS 10:45 → LAX Connection details →	3h 20m	8h 05m	98%	92%
Southwest WN 4362 STL 08:15 → SMF Delta DL 3812 SMF 14:15 → LAX Connection details →	4h 00m	9h 37m	100%	91%
Southwest WN 3910 STL 08:42 → DEN United UA 774 DEN 13:26 → LAX Connection details →	3h 24m	8h 15m	100%	91%

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