Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s ECP → STL flights land within a few points of 78% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	ECP	STL	1h 50m	78%	0.0%	315	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	ECP 09:19 → ATL 11:31DL 3048	2h 38m Atlanta	ATL 14:09 → STL 14:48DL 2700	5h 31m	98%	85%
Delta Details →	ECP 17:08 → ATL 19:24DL 3094	3h 46m Atlanta	ATL 23:10 → STL 23:53DL 1403	6h 48m	99%	79%
Delta Details →	ECP 06:00 → ATL 08:15DL 3114	3h 37m Atlanta	ATL 11:52 → STL 12:34DL 566	6h 30m	97%	78%
United Details →	ECP 11:40 → IAH 13:40UA 4851 · flown by CommuteAir	1h 51m Houston	IAH 15:31 → STL 17:42UA 6160 · flown by Mesa	6h 02m	94%	78%
American Details →	ECP 16:16 → CLT 19:05AA 3535 · flown by Envoy	3h 50m Charlotte	CLT 22:55 → STL 23:57AA 459	7h 41m	100%	74%
Delta Details →	ECP 11:43 → ATL 13:55DL 3045	3h 18m Atlanta	ATL 17:13 → STL 17:56DL 1393	6h 14m	98%	74%
Southwest Details →	ECP 06:10 → MDW 08:25WN 4180	2h 07m Chicago	MDW 10:32 → STL 11:45WN 2901	5h 34m	100%	72%
United Details →	ECP 06:30 → IAH 08:28UA 4255 · flown by CommuteAir	3h 32m Houston	IAH 12:00 → STL 14:16UA 5397 · flown by SkyWest	7h 46m	99%	71%
Tight connection: often missed
American Details →	ECP 18:54 → CLT 21:45AA 5178 · flown by PSA	1h 10m Charlotte	CLT 22:55 → STL 23:57AA 459	5h 03m	65%	46%
United Details →	ECP 14:05 → ORD 16:50UA 5654 · flown by SkyWest	1h 05m Chicago	ORD 17:55 → STL 19:23UA 4412 · flown by GoJet	5h 18m	66%	34%
American Details →	ECP 18:56 → DFW 21:13AA 5651 · flown by PSA	57m Dallas-Fort Worth	DFW 22:10 → STL 23:58AA 3049	5h 03m	49%	23%

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 · 50m · leaves 06:55 11%

CLT · 1h 04m · leaves 07:05 11%

IAH · 1h 03m · leaves 09:00 13%

Afternoon and evening

IAH · 1h 20m · leaves 17:05 22%

CLT · 1h 10m · leaves 18:54 35%

DFW · 57m · leaves 18:56 51%

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 1674 ECP 07:41 → ATL Southwest WN 240 ATL 13:10 → STL Connection details →	3h 15m	6h 09m	98%	73%
United UA 5874 ECP 10:25 → ORD American AA 4537 ORD 15:07 → STL Connection details →	1h 58m	6h 15m	93%	71%
American AA 5179 ECP 11:00 → CLT Southwest WN 1173 CLT 16:40 → STL Connection details →	2h 54m	6h 50m	95%	61%

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