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 3% of the time at 10 am and 16% of the time at 10 pm.

Nonstops (seasonal or thin)


Southwest	STL	JAX	1h 55m	79%	0.2%	507	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Jacksonville on time. Total trip = scheduled departure to arrival, layover included (Jacksonville is 1 h ahead of St Louis). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	STL 08:49 → MSP 10:30DL 5325 · flown by Endeavor	2h 27m Minneapolis	MSP 12:57 → JAX 16:54DL 2392	7h 03m	99%	83%
Delta Details →	STL 06:00 → ATL 08:38DL 1524	2h 10m Atlanta	ATL 10:48 → JAX 12:00DL 2923	5h 00m	99%	82%
United Details →	STL 08:35 → IAH 10:50UA 4579 · flown by GoJet	1h 20m Houston	IAH 12:10 → JAX 15:37UA 4048 · flown by Mesa	6h 02m	97%	80%
Southwest Details →	STL 05:40 → MDW 06:45WN 1008	1h 55m Chicago	MDW 08:40 → JAX 12:00WN 4499	5h 20m	98%	78%
Delta Details →	STL 07:08 → ATL 09:45DL 1536	2h 48m Atlanta	ATL 12:33 → JAX 13:43DL 3024	5h 35m	99%	77%
Delta Details →	STL 10:20 → DTW 12:55DL 2868	2h 08m Detroit	DTW 15:03 → JAX 17:27DL 2994	6h 07m	98%	77%
United Details →	STL 06:00 → ORD 07:30UA 2805	3h 12m Chicago	ORD 10:42 → JAX 14:27UA 2427	7h 27m	97%	77%
Delta Details →	STL 09:24 → ATL 12:02DL 1571	1h 55m Atlanta	ATL 13:57 → JAX 15:07DL 2990	4h 44m	98%	76%
Tight connection: often missed
United Details →	STL 11:25 → ORD 13:03UA 4395 · flown by GoJet	57m Chicago	ORD 14:00 → JAX 17:49UA 5807 · flown by SkyWest	5h 24m	68%	48%
United Details →	STL 16:53 → EWR 20:30UA 3564 · flown by Republic	52m Newark	EWR 21:22 → JAX 23:59UA 2335	6h 06m	48%	30%
American Details →	STL 17:13 → DFW 19:15AA 2712	1h 01m Dallas-Fort Worth	DFW 20:16 → JAX 23:41AA 2506	5h 28m	33%	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

ATL · 1h 03m · leaves 07:08 3%

CLT · 56m · leaves 07:32 18%

ORD · 1h 07m · leaves 08:00 18%

Afternoon and evening

ATL · 1h 04m · leaves 18:58 16%

IAH · 59m · leaves 14:57 37%

DFW · 1h 01m · leaves 17:13 67%

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 3961 STL 08:15 → MSP Delta DL 2392 MSP 12:57 → JAX Connection details →	3h 12m	7h 37m	94%	80%
Southwest WN 4177 STL 09:55 → DTW Delta DL 2994 DTW 15:03 → JAX Connection details →	2h 38m	6h 32m	97%	77%
Southwest WN 236 STL 10:00 → ATL Delta DL 2720 ATL 15:20 → JAX Connection details →	2h 45m	5h 33m	96%	74%

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