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 22% of the time at 12 pm and almost half the time at 8 pm.

Nonstops


American	STL	PHX	3h 32m	83%	0.9%	643	Flying now
Southwest	STL	PHX	3h 25m	73%	0.3%	1,619	Flying now
Frontier	STL	PHX	3h 33m	83%	1.9%	53	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	STL 06:00 → ORD 07:30UA 2805	1h 32m Chicago	ORD 09:02 → PHX 11:03UA 2225	7h 03m	97%	91%
Southwest Details →	STL 05:40 → MDW 06:45WN 1008	1h 55m Chicago	MDW 08:40 → PHX 10:20WN 3016	6h 40m	98%	89%
United Details →	STL 08:35 → IAH 10:50UA 4579 · flown by GoJet	3h 30m Houston	IAH 14:20 → PHX 15:10UA 1238	8h 35m	100%	86%
Southwest Details →	STL 05:45 → DEN 07:00WN 3909	1h 40m Denver	DEN 08:40 → PHX 09:35WN 431	5h 50m	97%	86%
American Details →	STL 05:10 → CLT 08:03AA 858	1h 37m Charlotte	CLT 09:40 → PHX 11:04AA 1986	7h 53m	97%	86%
Southwest Details →	STL 08:10 → MCI 09:15WN 3943	1h 25m Kansas City	MCI 10:40 → PHX 11:25WN 4651	5h 15m	100%	86%
Southwest Details →	STL 07:55 → HOU 10:00WN 3928	2h 00m Houston	HOU 12:00 → PHX 12:40WN 2063	6h 45m	100%	85%
Southwest Details →	STL 06:00 → LAS 07:25WN 3934	2h 15m Las Vegas	LAS 09:40 → PHX 11:00WN 2310	7h 00m	98%	83%
Tight connection: often missed
United Details →	STL 16:48 → DEN 18:23UA 1483	1h 09m Denver	DEN 19:32 → PHX 20:32UA 1729	5h 44m	61%	46%
United Details →	STL 17:59 → ORD 19:30UA 1639	1h 00m Chicago	ORD 20:30 → PHX 22:27UA 602	6h 28m	66%	43%
American Details →	STL 20:14 → ORD 21:45AA 4144 · flown by Envoy	49m Chicago	ORD 22:34 → PHX 00:14 +1AA 2786	5h 59m	54%	24%

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

SLC · 1h 18m · leaves 08:00 5%

AUS · 1h 20m · leaves 08:25 7%

DEN · 1h 00m · leaves 05:45 9%

Afternoon and evening

ATL · 53m · leaves 17:06 47%

DEN · 1h 00m · leaves 18:40 53%

DFW · 1h 15m · leaves 17:13 58%

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 American AA 2004 LAS 09:56 → PHX Connection details →	2h 31m	7h 08m	96%	88%
Southwest WN 3937 STL 08:10 → LAX Delta DL 3894 LAX 13:48 → PHX Connection details →	3h 43m	9h 13m	100%	87%
United UA 362 STL 05:10 → DEN Frontier F9 2141 DEN 09:15 → PHX Connection details →	2h 43m	7h 06m	100%	85%

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