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 5% of the time at 6 am and 1 time in 3 at 6 pm.

Nonstops (seasonal or thin)


United	DEN	CHS	3h 23m	82%	0.5%	438	Flying now
Southwest	DEN	CHS	3h 15m	70%	0.0%	204	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	DEN 23:59 → IAD 05:27UA 1924	2h 58m Dulles	IAD 08:25 → CHS 10:11 +1UA 1108	8h 12m	100%	93%
Delta Details →	DEN 00:40 → ATL 05:42DL 302	1h 58m Atlanta	ATL 07:40 → CHS 09:00DL 5450 · flown by Endeavor	6h 20m	99%	92%
Southwest Details →	DEN 23:50 → BWI 05:15WN 1501	3h 00m Baltimore	BWI 08:15 → CHS 10:02 +1WN 898	8h 13m	100%	90%
United Details →	DEN 23:59 → EWR 05:40UA 1745	1h 05m Newark	EWR 06:45 → CHS 08:51 +1UA 2355	6h 52m	95%	84%
American Details →	DEN 23:59 → CLT 05:13AA 3156	3h 46m Charlotte	CLT 08:59 → CHS 10:07 +1AA 1666	8h 08m	100%	83%
United Details →	DEN 06:13 → IAD 11:41UA 1279	54m Dulles	IAD 12:35 → CHS 14:27UA 3487 · flown by Republic	6h 14m	92%	82%
Delta Details →	DEN 05:45 → ATL 10:42DL 341	1h 47m Atlanta	ATL 12:29 → CHS 13:41DL 2179	5h 56m	97%	82%
Delta Details →	DEN 10:58 → ATL 15:54DL 346	3h 39m Atlanta	ATL 19:33 → CHS 20:47DL 2493	7h 49m	99%	80%
Tight connection: often missed
American Details →	DEN 15:57 → CLT 21:27AA 1735	1h 23m Charlotte	CLT 22:50 → CHS 23:59AA 1141	6h 01m	66%	43%
American Details →	DEN 14:22 → ORD 18:16AA 1760	1h 29m Chicago	ORD 19:45 → CHS 23:09AA 3127	6h 47m	70%	40%
American Details →	DEN 15:11 → DFW 18:21AA 420	56m Dallas-Fort Worth	DFW 19:17 → CHS 22:55AA 2559	5h 44m	66%	27%

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

EWR · 1h 05m · leaves 23:59 5%

IAH · 1h 00m · leaves 07:42 8%

IAD · 54m · leaves 06:13 8%

Afternoon and evening

BWI · 50m · leaves 10:55 25%

DFW · 56m · leaves 15:11 34%

PHL · 56m · leaves 15:13 44%

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.


Frontier F9 1450 DEN 23:46 → ATL Delta DL 3091 ATL 09:00 → CHS Connection details →	3h 58m	8h 28m	98%	88%
Frontier F9 3294 DEN 06:30 → ATL Delta DL 1381 ATL 14:42 → CHS Connection details →	3h 04m	7h 28m	98%	81%
United UA 1214 DEN 23:59 → PHL American AA 5575 PHL 08:55 → CHS Connection details →	3h 24m	9h 02m	98%	81%

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