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

No clear winner: American’s CHS → MIA flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops


American	CHS	MIA	1h 45m	80%	1.2%	1,007	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	CHS 06:41 → CLT 07:47AA 3235	3h 14m Charlotte	CLT 11:01 → MIA 13:11AA 969	6h 29m	99%	86%
American Details →	CHS 06:00 → DCA 07:35AA 3089	2h 20m Washington	DCA 09:55 → MIA 12:38AA 1173	6h 38m	100%	85%
Delta Details →	CHS 05:10 → ATL 06:21DL 3055	1h 09m Atlanta	ATL 07:30 → MIA 09:30DL 2836	4h 23m	98%	84%
American Details →	CHS 05:00 → CLT 06:01AA 3298	3h 24m Charlotte	CLT 09:25 → MIA 11:37AA 1436	6h 37m	99%	83%
Delta Details →	CHS 07:20 → ATL 08:34DL 1664	2h 26m Atlanta	ATL 11:00 → MIA 13:04DL 1332	5h 44m	98%	79%
Southwest Details →	CHS 07:15 → BWI 08:50WN 1090	2h 55m Baltimore	BWI 11:45 → MIA 14:20WN 4737	7h 05m	96%	77%
Delta Details →	CHS 06:15 → ATL 07:25DL 2124	1h 30m Atlanta	ATL 08:55 → MIA 10:57DL 1510	4h 41m	95%	77%
American Details →	CHS 08:48 → CLT 10:15AA 5817 · flown by Piedmont	3h 15m Charlotte	CLT 13:30 → MIA 15:38AA 2912	6h 50m	100%	75%
Tight connection: often missed
American Details →	CHS 11:01 → DCA 12:44AA 5659 · flown by PSA	1h 00m Washington	DCA 13:44 → MIA 16:29AA 2915	5h 28m	64%	41%
American Details →	CHS 19:50 → CLT 21:10AA 5086 · flown by PSA	1h 29m Charlotte	CLT 22:39 → MIA 00:46 +1AA 1596	4h 56m	71%	41%
American Details →	CHS 16:13 → DCA 18:00AA 5568 · flown by PSA	1h 10m Washington	DCA 19:10 → MIA 22:00AA 3244	5h 47m	65%	30%

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 09m · leaves 05:10 2%

CLT · 1h 04m · leaves 05:00 2%

ORD · 59m · leaves 07:30 10%

Afternoon and evening

ORD · 1h 11m · leaves 15:08 19%

DCA · 1h 10m · leaves 16:13 35%

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 1141 CHS 06:30 → BNA American AA 1521 BNA 10:39 → MIA Connection details →	3h 44m	7h 30m	100%	87%
Delta DL 3055 CHS 05:10 → ATL American AA 2526 ATL 09:00 → MIA Connection details →	2h 39m	5h 57m	99%	80%
United UA 2333 CHS 06:00 → ORD American AA 1474 ORD 10:04 → MIA Connection details →	2h 31m	8h 17m	95%	77%

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