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 8% of the time at 8 am and 44% of the time at 7 pm.

Nonstops


American	DCA	SDF	2h 00m	76%	5.1%	1,031	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. Layovers up to 4 hours. Pick a connection for the details.


American Details →	DCA 05:00 → DFW 07:22AA 2243	2h 09m Dallas-Fort Worth	DFW 09:31 → SDF 12:48AA 3791 · flown by Envoy	7h 48m	99%	89%
Southwest Details →	DCA 09:25 → MDW 10:20WN 1444	2h 25m Chicago	MDW 12:45 → SDF 14:55WN 4473	5h 30m	100%	85%
Delta Details →	DCA 06:00 → ATL 07:48DL 410	1h 22m Atlanta	ATL 09:10 → SDF 10:29DL 1374	4h 32m	97%	83%
American Details →	DCA 09:40 → BOS 11:24AA 4691 · flown by Republic	2h 35m Boston	BOS 13:59 → SDF 16:40AA 3438 · flown by Envoy	7h 00m	98%	83%
United Details →	DCA 06:00 → EWR 07:19UA 4167 · flown by GoJet	2h 46m Newark	EWR 10:05 → SDF 12:21UA 3421 · flown by Republic	6h 21m	98%	82%
Delta Details →	DCA 06:59 → ATL 08:51DL 330	1h 39m Atlanta	ATL 10:30 → SDF 11:53DL 1481	4h 54m	97%	82%
Delta Details →	DCA 12:17 → ATL 14:07DL 380	3h 52m Atlanta	ATL 17:59 → SDF 19:24DL 2831	7h 07m	98%	82%
Southwest Details →	DCA 06:10 → BNA 07:00WN 1425	3h 05m Nashville	BNA 10:05 → SDF 12:00WN 670	5h 50m	98%	82%
Tight connection: often missed
American Details →	DCA 17:18 → PHL 18:32AA 5406 · flown by PSA	2h 06m Philadelphia	PHL 20:38 → SDF 23:03AA 4466 · flown by Republic	5h 45m	70%	52%
United Details →	DCA 15:30 → ORD 16:52UA 1325	58m Chicago	ORD 17:50 → SDF 20:23UA 3598 · flown by Republic	4h 53m	63%	44%
United Details →	DCA 19:10 → ORD 20:32UA 1193	53m Chicago	ORD 21:25 → SDF 23:59UA 3659 · flown by Republic	4h 49m	49%	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

ORD · 1h 17m · leaves 08:25 5%

DTW · 55m · leaves 06:00 8%

LGA · 1h 05m · leaves 06:20 13%

Afternoon and evening

IAH · 1h 17m · leaves 12:59 7%

EWR · 57m · leaves 17:55 44%

ORD · 53m · leaves 19:10 51%

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.


Delta DL 5611 DCA 10:00 → BOS American AA 3438 BOS 13:59 → SDF Connection details →	2h 16m	6h 40m	96%	81%
American AA 4358 DCA 06:59 → BNA Southwest WN 670 BNA 10:05 → SDF Connection details →	2h 00m	5h 01m	94%	79%
American AA 4393 DCA 06:59 → LGA Delta DL 5637 LGA 11:05 → SDF Connection details →	2h 45m	6h 33m	97%	79%

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