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 6% of the time at 7 am and 1 time in 5 at 4 pm.

Nonstops (seasonal or thin)


Southwest	SDF	BNA	55m	79%	1.0%	505	Flying now

Best connections, one ticket

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 Louisville). Layovers up to 4 hours. Pick a connection for the details.


United Details →	SDF 09:00 → ORD 09:38UA 3696 · flown by Republic	2h 51m Chicago	ORD 12:29 → BNA 14:14UA 3634 · flown by Republic	6h 14m	100%	89%
Delta Details →	SDF 06:00 → ATL 07:25DL 2407	3h 56m Atlanta	ATL 11:21 → BNA 11:33DL 2867	6h 33m	99%	85%
Delta Details →	SDF 07:50 → DTW 09:16DL 5824 · flown by Republic	3h 09m Detroit	DTW 12:25 → BNA 13:06DL 1557	6h 16m	98%	85%
Southwest Details →	SDF 06:40 → MCO 08:40WN 4679	2h 20m Orlando	MCO 11:00 → BNA 12:00WN 4713	6h 20m	100%	84%
United Details →	SDF 06:00 → IAD 07:35UA 3438 · flown by Republic	55m Dulles	IAD 08:30 → BNA 09:29UA 1366	4h 29m	93%	82%
Delta Details →	SDF 07:05 → ATL 08:34DL 1610	1h 18m Atlanta	ATL 09:52 → BNA 10:06DL 1155	4h 00m	94%	81%
Southwest Details →	SDF 05:50 → BWI 07:25WN 4612	2h 20m Baltimore	BWI 09:45 → BNA 10:35WN 487	5h 45m	98%	80%
United Details →	SDF 07:15 → ORD 07:56UA 3422 · flown by Republic	2h 41m Chicago	ORD 10:37 → BNA 12:29UA 2414	6h 14m	99%	79%
Tight connection: often missed
Delta Details →	SDF 17:55 → MSP 19:09DL 5017 · flown by Endeavor	1h 11m Minneapolis	MSP 20:20 → BNA 22:29DL 1144	5h 34m	64%	50%
American Details →	SDF 18:25 → PHL 20:23AA 5394 · flown by PSA	1h 07m Philadelphia	PHL 21:30 → BNA 22:46AA 2277	5h 21m	62%	33%
United Details →	SDF 14:10 → ORD 14:50UA 5603 · flown by SkyWest	59m Chicago	ORD 15:49 → BNA 17:40UA 5665 · flown by SkyWest	4h 30m	55%	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 18m · leaves 07:05 6%

IAD · 55m · leaves 06:00 7%

DEN · 51m · leaves 08:00 11%

Afternoon and evening

DFW · 1h 02m · leaves 15:52 21%

MSP · 1h 11m · leaves 17:55 36%

PHL · 1h 07m · leaves 18:25 38%

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.


American AA 4549 SDF 06:00 → DCA Southwest WN 1426 DCA 10:35 → BNA Connection details →	2h 45m	6h 30m	97%	78%
American AA 4622 SDF 06:51 → ORD United UA 2414 ORD 10:37 → BNA Connection details →	2h 59m	6h 38m	96%	77%
United UA 3422 SDF 07:15 → ORD American AA 1650 ORD 10:00 → BNA Connection details →	2h 04m	5h 22m	95%	71%

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