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 GSP → MIA flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


American	GSP	MIA	1h 57m	81%	1.2%	726	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 →	GSP 07:00 → CLT 08:16AA 5654 · flown by PSA	2h 45m Charlotte	CLT 11:01 → MIA 13:11AA 969	6h 10m	96%	83%
Delta Details →	GSP 05:44 → ATL 06:45DL 3028	2h 10m Atlanta	ATL 08:55 → MIA 10:57DL 1510	5h 12m	99%	79%
Southwest Details →	GSP 08:25 → BWI 09:50WN 1899	1h 55m Baltimore	BWI 11:45 → MIA 14:20WN 4737	5h 55m	98%	79%
American Details →	GSP 07:20 → ORD 08:46AA 3385 · flown by Envoy	1h 18m Chicago	ORD 10:04 → MIA 14:16AA 1474	6h 57m	96%	79%
Delta Details →	GSP 06:45 → ATL 07:49DL 1146	3h 11m Atlanta	ATL 11:00 → MIA 13:04DL 1332	6h 19m	98%	78%
American Details →	GSP 09:04 → CLT 10:25AA 5798 · flown by Piedmont	3h 05m Charlotte	CLT 13:30 → MIA 15:38AA 2912	6h 34m	98%	73%
United Details →	GSP 06:30 → EWR 08:35UA 3700 · flown by Republic	2h 56m Newark	EWR 11:31 → MIA 14:38UA 2295	8h 08m	99%	73%
Delta Details →	GSP 08:52 → ATL 09:57DL 1619	2h 57m Atlanta	ATL 12:54 → MIA 14:55DL 1579	6h 03m	99%	73%
Tight connection: often missed
American Details →	GSP 14:35 → CLT 15:51AA 5805 · flown by Piedmont	49m Charlotte	CLT 16:40 → MIA 18:57AA 2231	4h 22m	74%	46%
American Details →	GSP 07:01 → DFW 08:44AA 1254	47m Dallas-Fort Worth	DFW 09:31 → MIA 13:29AA 2762	6h 28m	64%	42%
American Details →	GSP 17:28 → DFW 19:15AA 1897	50m Dallas-Fort Worth	DFW 20:05 → MIA 23:56AA 2823	6h 28m	41%	15%

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 06m · leaves 06:45 7%

CLT · 1h 09m · leaves 07:00 10%

DCA · 1h 16m · leaves 07:00 15%

Afternoon and evening

ATL · 1h 19m · leaves 15:21 9%

CLT · 59m · leaves 18:00 55%

DFW · 50m · leaves 17:28 59%

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 4705 GSP 07:00 → BNA American AA 1521 BNA 10:39 → MIA Connection details →	3h 29m	7h 00m	100%	87%
Delta DL 3028 GSP 05:44 → ATL American AA 2526 ATL 09:00 → MIA Connection details →	2h 15m	5h 23m	98%	80%
United UA 4728 GSP 06:10 → ORD American AA 1474 ORD 10:04 → MIA Connection details →	2h 34m	8h 07m	97%	80%

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