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

No clear winner: Southwest’s GSP → BNA flights land within a few points of 84% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	GSP	BNA	1h 20m	84%	0.4%	668	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


United Details →	GSP 06:10 → ORD 07:30UA 4728 · flown by SkyWest	1h 10m Chicago	ORD 08:40 → BNA 10:34UA 5304 · flown by SkyWest	5h 24m	97%	88%
Delta Details →	GSP 05:44 → ATL 06:45DL 3028	1h 46m Atlanta	ATL 08:31 → BNA 08:43DL 3069	3h 59m	99%	87%
Delta Details →	GSP 07:10 → DTW 09:00DL 876	3h 25m Detroit	DTW 12:25 → BNA 13:06DL 1557	6h 56m	100%	85%
Delta Details →	GSP 06:45 → ATL 07:49DL 1146	3h 32m Atlanta	ATL 11:21 → BNA 11:33DL 2867	5h 48m	98%	85%
American + Unitedtwo ticketsDetails →	GSP 08:14 → ORD 09:31AA 3564 · flown by Envoy	2h 58m Chicago	ORD 12:29 → BNA 14:14UA 3634 · flown by Republic	7h 00m	99%	84%
American + Unitedtwo ticketsDetails →	GSP 07:20 → ORD 08:46AA 3385 · flown by Envoy	1h 51m Chicago	ORD 10:37 → BNA 12:29UA 2414	6h 09m	96%	78%
Delta Details →	GSP 08:52 → ATL 09:57DL 1619	3h 54m Atlanta	ATL 13:51 → BNA 14:00DL 3159	6h 08m	100%	76%
American Details →	GSP 07:00 → CLT 08:16AA 5654 · flown by PSA	3h 04m Charlotte	CLT 11:20 → BNA 12:02AA 5082 · flown by PSA	6h 02m	96%	73%
Tight connection: often missed
Delta Details →	GSP 18:55 → DTW 20:48DL 5090 · flown by Endeavor	47m Detroit	DTW 21:35 → BNA 22:15DL 2126	4h 20m	57%	41%
United Details →	GSP 17:43 → ORD 19:00UA 5524 · flown by SkyWest	57m Chicago	ORD 19:57 → BNA 21:45UA 2063	5h 02m	56%	25%
American Details →	GSP 17:28 → DFW 19:15AA 1897	57m Dallas-Fort Worth	DFW 20:12 → BNA 22:08AA 1500	5h 39m	50%	24%

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

PHL · 1h 18m · leaves 07:56 7%

CLT · 1h 04m · leaves 09:00 8%

DFW · 1h 16m · leaves 07:01 10%

Afternoon and evening

MIA · 52m · leaves 20:08 47%

DFW · 57m · leaves 17:28 50%

DCA · 58m · leaves 19:20 55%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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