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 8% of the time at 7 am and 1 time in 5 at 8 pm.

Nonstops (seasonal or thin)


Southwest	CHS	HOU	2h 45m	80%	0.0%	193	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	CHS 07:15 → BWI 08:50WN 1090	1h 10m Baltimore	BWI 10:00 → HOU 12:15WN 956	6h 00m	96%	84%
Delta Details →	CHS 05:10 → ATL 06:21DL 3055	1h 59m Atlanta	ATL 08:20 → HOU 09:28DL 1509	5h 14m	99%	83%
Southwest Details →	CHS 07:35 → MDW 08:45WN 4167	1h 25m Chicago	MDW 10:10 → HOU 12:50WN 2783	6h 15m	96%	83%
Delta Details →	CHS 07:20 → ATL 08:34DL 1664	2h 31m Atlanta	ATL 11:05 → HOU 12:11DL 1195	5h 52m	98%	82%
Southwest Details →	CHS 06:30 → BNA 06:55WN 1141	1h 05m Nashville	BNA 08:00 → HOU 10:05WN 532	4h 35m	96%	78%
Delta Details →	CHS 11:18 → ATL 12:27DL 3091	2h 44m Atlanta	ATL 15:11 → HOU 16:23DL 2381	6h 07m	98%	77%
American Details →	CHS 07:01 → DFW 08:58AA 1553	1h 53m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	6h 15m	97%	77%
Delta Details →	CHS 17:03 → ATL 18:24DL 1381	2h 11m Atlanta	ATL 20:35 → HOU 21:43DL 2051	5h 40m	95%	68%
Tight connection: often missed
American Details →	CHS 15:42 → DFW 17:39AA 1656	55m Dallas-Fort Worth	DFW 18:34 → HOU 19:51AA 3351 · flown by Envoy	5h 09m	53%	32%
American Details →	CHS 19:19 → DFW 21:17AA 1662	1h 21m Dallas-Fort Worth	DFW 22:38 → HOU 23:56AA 5465 · flown by PSA	5h 37m	70%	31%
Southwest Details →	CHS 21:20 → BNA 21:50WN 1142	55m Nashville	BNA 22:45 → HOU 00:50 +1WN 4474	4h 25m	40%	19%

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

BNA · 1h 05m · leaves 06:30 4%

ATL · 55m · leaves 06:15 8%

Afternoon and evening

STL · 1h 00m · leaves 16:45 33%

DFW · 55m · leaves 15:42 47%

BNA · 55m · leaves 21:20 60%

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 3055 CHS 05:10 → ATL Southwest WN 4914 ATL 09:30 → HOU Connection details →	3h 09m	6h 25m	99%	77%
American AA 4586 CHS 06:41 → LGA Southwest WN 1711 LGA 10:30 → HOU Connection details →	1h 42m	7h 39m	93%	72%
Delta DL 3091 CHS 11:18 → ATL Southwest WN 206 ATL 16:05 → HOU Connection details →	3h 38m	6h 57m	98%	64%

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