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

No clear winner: airlines and hours on this route all land within a few points of 84% on time.

Nonstops (seasonal or thin)


Southwest	SDF	PHX	4h 00m	84%	1.1%	369	Flying now
American	SDF	PHX	–	67%few flights	0.0%	3	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Phoenix on time. Total trip = scheduled departure to arrival, layover included (Phoenix is 3 h behind Louisville). Layovers up to 4 hours. Pick a connection for the details.


United Details →	SDF 06:30 → EWR 08:38UA 3594 · flown by Republic	2h 46m Newark	EWR 11:24 → PHX 13:39UA 370	10h 09m	99%	86%
United Details →	SDF 08:00 → DEN 08:59UA 1506	2h 26m Denver	DEN 11:25 → PHX 12:25UA 1686	7h 25m	99%	86%
American Details →	SDF 05:04 → CLT 06:41AA 5255 · flown by PSA	2h 59m Charlotte	CLT 09:40 → PHX 11:04AA 1986	8h 59m	96%	86%
United Details →	SDF 07:15 → ORD 07:56UA 3422 · flown by Republic	1h 06m Chicago	ORD 09:02 → PHX 11:03UA 2225	6h 48m	93%	86%
United Details →	SDF 10:04 → ORD 10:40UA 5629 · flown by SkyWest	2h 50m Chicago	ORD 13:30 → PHX 15:19UA 455	8h 15m	100%	85%
Southwest Details →	SDF 06:15 → LAS 07:10WN 3607	2h 30m Las Vegas	LAS 09:40 → PHX 11:00WN 2310	7h 45m	100%	85%
United Details →	SDF 09:30 → IAH 10:58UA 6326 · flown by Mesa	3h 22m Houston	IAH 14:20 → PHX 15:10UA 1238	8h 40m	97%	82%
United Details →	SDF 06:15 → IAH 07:42UA 6266 · flown by Mesa	1h 58m Houston	IAH 09:40 → PHX 10:34UA 1895	7h 19m	97%	81%
Tight connection: often missed
American Details →	SDF 06:38 → DFW 08:08AA 331	47m Dallas-Fort Worth	DFW 08:55 → PHX 09:29AA 520	5h 51m	74%	52%
American Details →	SDF 15:39 → CLT 17:24AA 5397 · flown by PSA	59m Charlotte	CLT 18:23 → PHX 19:51AA 1073	7h 12m	67%	40%
American Details →	SDF 18:02 → DFW 19:28AA 4152 · flown by Envoy	1h 02m Dallas-Fort Worth	DFW 20:30 → PHX 21:02AA 1133	6h 00m	69%	38%

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 06m · leaves 07:15 7%

CLT · 1h 09m · leaves 05:04 10%

BNA · 47m · leaves 07:25 17%

Afternoon and evening

DTW · 1h 04m · leaves 14:19 27%

DFW · 1h 02m · leaves 18:02 31%

CLT · 59m · leaves 15:39 33%

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 3607 SDF 06:15 → LAS American AA 2004 LAS 09:56 → PHX Connection details →	2h 46m	7h 53m	100%	92%
American AA 4704 SDF 11:05 → ORD United UA 455 ORD 13:30 → PHX Connection details →	1h 46m	7h 14m	96%	81%
United UA 1506 SDF 08:00 → DEN American AA 1757 DEN 12:15 → PHX Connection details →	3h 16m	8h 08m	99%	81%

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