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

The nonstop is quickest: Southwest BNA → SDF (1h 00m), on time 72% of the time. Southwest via Midway (3h 55m) is more reliable, 93%, but takes 2h 55m longer.

Nonstops (seasonal or thin)


Southwest	BNA	SDF	1h 00m	72%	0.4%	506	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	BNA 05:10 → MDW 06:45WN 573	1h 00m Chicago	MDW 07:45 → SDF 10:05WN 1267	3h 55m	98%	93%
American Details →	BNA 05:01 → DFW 07:12AA 2821	2h 19m Dallas-Fort Worth	DFW 09:31 → SDF 12:48AA 3791 · flown by Envoy	6h 47m	97%	86%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	1h 59m Atlanta	ATL 10:30 → SDF 11:53DL 1481	4h 38m	98%	84%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 50m Atlanta	ATL 09:10 → SDF 10:29DL 1374	4h 22m	97%	83%
Southwest Details →	BNA 06:45 → BWI 09:35WN 462	1h 10m Baltimore	BWI 10:45 → SDF 12:30WN 1297	4h 45m	94%	83%
American Details →	BNA 07:04 → DFW 09:20AA 2583	2h 47m Dallas-Fort Worth	DFW 12:07 → SDF 15:22AA 3758 · flown by Envoy	7h 18m	98%	82%
American Details →	BNA 10:42 → ORD 12:38AA 3439 · flown by Envoy	3h 24m Chicago	ORD 16:02 → SDF 18:36AA 4668 · flown by Republic	6h 56m	100%	81%
Delta Details →	BNA 12:38 → ATL 14:52DL 2867	3h 07m Atlanta	ATL 17:59 → SDF 19:24DL 2831	5h 46m	96%	79%
Tight connection: often missed
Delta Details →	BNA 16:31 → ATL 18:49DL 3142	1h 04m Atlanta	ATL 19:53 → SDF 21:19DL 3093	3h 48m	72%	55%
American Details →	BNA 15:57 → ORD 18:05AA 6200 · flown by SkyWest	1h 24m Chicago	ORD 19:29 → SDF 22:04AA 4603 · flown by Republic	5h 07m	67%	45%
Southwest Details →	BNA 18:05 → BWI 21:00WN 467	1h 25m Baltimore	BWI 22:25 → SDF 00:30 +1WN 156	5h 05m	60%	32%

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

MDW · 1h 00m · leaves 05:10 2%

BWI · 1h 10m · leaves 06:45 6%

ORD · 1h 19m · leaves 07:40 7%

Afternoon and evening

ATL · 55m · leaves 14:51 30%

CLT · 1h 09m · leaves 19:14 30%

ORD · 55m · leaves 18:24 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.


Southwest WN 623 BNA 10:15 → PHL American AA 4720 PHL 15:34 → SDF Connection details →	2h 14m	6h 30m	94%	80%
JetBlue B6 806 BNA 08:40 → BOS American AA 3438 BOS 13:59 → SDF Connection details →	1h 45m	7h 00m	93%	77%
Southwest WN 893 BNA 12:50 → ATL Delta DL 2831 ATL 17:59 → SDF Connection details →	2h 59m	5h 34m	90%	76%

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