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 1 time in 10 at 11 am and 1 time in 4 at 5 pm.

Nonstops


American	SDF	DFW	2h 30m	76%	3.5%	1,998	Flying now
Spirit	SDF	DFW	–	75%few flights	0.0%	4	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	SDF 07:50 → DTW 09:16DL 5824 · flown by Republic	3h 29m Detroit	DTW 12:45 → DFW 14:32DL 1041	7h 44m	99%	83%
Delta Details →	SDF 06:00 → ATL 07:25DL 2407	2h 27m Atlanta	ATL 09:52 → DFW 11:12DL 961	6h 16m	98%	82%
United Details →	SDF 06:00 → IAD 07:35UA 3438 · flown by Republic	55m Dulles	IAD 08:30 → DFW 10:53UA 2471	5h 53m	93%	80%
United Details →	SDF 06:15 → IAH 07:42UA 6266 · flown by Mesa	1h 49m Houston	IAH 09:31 → DFW 10:57UA 2074	5h 42m	96%	78%
Delta Details →	SDF 07:05 → ATL 08:34DL 1610	2h 54m Atlanta	ATL 11:28 → DFW 12:50DL 414	6h 45m	97%	77%
Delta Details →	SDF 06:49 → MSP 08:00DL 4928 · flown by Endeavor	2h 03m Minneapolis	MSP 10:03 → DFW 12:30DL 2970	6h 44m	94%	75%
United Details →	SDF 10:04 → ORD 10:40UA 5629 · flown by SkyWest	2h 25m Chicago	ORD 13:05 → DFW 15:48UA 2290	6h 44m	100%	75%
United Details →	SDF 07:15 → ORD 07:56UA 3422 · flown by Republic	2h 33m Chicago	ORD 10:29 → DFW 13:12UA 441	6h 57m	98%	75%
Tight connection: often missed
United Details →	SDF 15:41 → IAH 17:10UA 6310 · flown by Mesa	55m Houston	IAH 18:05 → DFW 19:31UA 1535	4h 50m	75%	52%
American Details →	SDF 14:18 → DCA 15:59AA 4753 · flown by Republic	1h 12m Washington	DCA 17:11 → DFW 19:41AA 1414	6h 23m	70%	41%
United Details →	SDF 14:10 → ORD 14:50UA 5603 · flown by SkyWest	50m Chicago	ORD 15:40 → DFW 18:22UA 793	5h 12m	37%	23%

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

LGA · 1h 15m · leaves 06:00 5%

ATL · 1h 18m · leaves 07:05 6%

IAD · 55m · leaves 06:00 7%

Afternoon and evening

IAH · 55m · leaves 15:41 25%

DCA · 1h 12m · leaves 14:18 30%

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 4679 SDF 06:40 → MCO American AA 2124 MCO 11:16 → DFW Connection details →	2h 36m	7h 27m	98%	83%
Delta DL 2407 SDF 06:00 → ATL American AA 3390 ATL 09:43 → DFW Connection details →	2h 18m	6h 13m	96%	80%
Delta DL 1610 SDF 07:05 → ATL American AA 891 ATL 11:21 → DFW Connection details →	2h 47m	6h 45m	96%	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