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 16% of the time at 9 am and 36% of the time at 6 pm.

Nonstops (seasonal or thin)


Southwest	CHS	STL	2h 15m	80%	0.6%	159	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 (St Louis is 1 h behind Charleston). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	CHS 09:41 → ATL 11:00DL 5450 · flown by Endeavor	3h 09m Atlanta	ATL 14:09 → STL 14:48DL 2700	6h 09m	100%	89%
American Details →	CHS 05:00 → CLT 06:01AA 3298	1h 35m Charlotte	CLT 07:36 → STL 08:32AA 2733	4h 32m	98%	87%
Delta Details →	CHS 05:10 → ATL 06:21DL 3055	1h 22m Atlanta	ATL 07:43 → STL 08:19DL 1571	4h 09m	98%	86%
United Details →	CHS 06:00 → ORD 07:33UA 2333	3h 07m Chicago	ORD 10:40 → STL 12:11UA 1355	7h 11m	98%	86%
United Details →	CHS 06:00 → EWR 07:59UA 1289	1h 54m Newark	EWR 09:53 → STL 11:41UA 3630 · flown by Republic	6h 41m	97%	83%
American Details →	CHS 07:30 → ORD 09:05AA 3027	3h 27m Chicago	ORD 12:32 → STL 13:55AA 3815 · flown by Envoy	7h 25m	100%	83%
American Details →	CHS 06:41 → CLT 07:47AA 3235	3h 13m Charlotte	CLT 11:00 → STL 11:59AA 2717	6h 17m	99%	81%
Delta Details →	CHS 06:15 → ATL 07:25DL 2124	1h 39m Atlanta	ATL 09:04 → STL 09:43DL 1400	4h 31m	96%	80%
Tight connection: often missed
Delta Details →	CHS 15:45 → LGA 17:50DL 1404	1h 01m New York	LGA 18:51 → STL 20:46DL 4926 · flown by Endeavor	6h 02m	64%	39%
United Details →	CHS 15:08 → ORD 16:54UA 3426 · flown by Republic	1h 01m Chicago	ORD 17:55 → STL 19:23UA 4412 · flown by GoJet	5h 15m	68%	34%
American Details →	CHS 19:19 → DFW 21:17AA 1662	53m Dallas-Fort Worth	DFW 22:10 → STL 23:58AA 3049	5h 40m	47%	22%

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

DCA · 1h 00m · leaves 06:00 3%

ATL · 52m · leaves 09:41 10%

PHL · 1h 00m · leaves 06:06 15%

Afternoon and evening

ORD · 1h 01m · leaves 15:08 32%

LGA · 1h 01m · leaves 15:45 36%

DFW · 53m · leaves 19:19 53%

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.


American AA 3027 CHS 07:30 → ORD United UA 1355 ORD 10:40 → STL Connection details →	1h 35m	5h 41m	87%	75%
Delta DL 5450 CHS 09:41 → ATL Southwest WN 240 ATL 13:10 → STL Connection details →	2h 10m	5h 09m	98%	75%
United UA 592 CHS 11:31 → ORD American AA 4537 ORD 15:07 → STL Connection details →	1h 58m	6h 09m	92%	70%

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