tailodds FORECAST
Tickets
Any day
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 86% on time.

Nonstops (seasonal or thin)

Nonstop details →
Southwest SDF LAS 4h 15m 87% 0.8% 365 Flying now
Spirit SDF LAS 4h 05m 73%few flights 0.0% 33 Not flying now
American SDF LAS – 0%few flights 0.0% 1 Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Las Vegas on time. Total trip = scheduled departure to arrival, layover included (Las Vegas is 3 h behind Louisville). Layovers up to 4 hours. Pick a connection for the details.
SouthwestDetails → SDF 05:50 → BWI 07:25WN 4612 2h 10m Baltimore BWI 09:35 → LAS 11:35WN 974 8h 45m 98% 86%
UnitedDetails → SDF 06:15 → IAH 07:42UA 6266 · flown by Mesa 3h 13m Houston IAH 10:55 → LAS 12:14UA 1799 8h 59m 98% 85%
UnitedDetails → SDF 07:15 → ORD 07:56UA 3422 · flown by Republic 3h 04m Chicago ORD 11:00 → LAS 13:05UA 2440 8h 50m 99% 85%
SouthwestDetails → SDF 06:40 → MCO 08:40WN 4679 1h 20m Orlando MCO 10:00 → LAS 11:45WN 4696 8h 05m 97% 85%
AmericanDetails → SDF 06:00 → MIA 08:33AA 1325 52m Miami MIA 09:25 → LAS 11:41AA 2010 8h 41m 89% 82%
UnitedDetails → SDF 06:30 → EWR 08:38UA 3594 · flown by Republic 3h 47m Newark EWR 12:25 → LAS 14:53UA 1864 11h 23m 100% 82%
UnitedDetails → SDF 08:00 → DEN 08:59UA 1506 2h 23m Denver DEN 11:22 → LAS 12:24UA 526 7h 24m 99% 81%
UnitedDetails → SDF 10:05 → IAD 11:45UA 3717 · flown by Republic 1h 15m Dulles IAD 13:00 → LAS 15:09UA 2156 8h 04m 89% 81%
Tight connection: often missed
DeltaDetails → SDF 14:19 → DTW 15:46DL 5160 · flown by Endeavor 49m Detroit DTW 16:35 → LAS 17:56DL 766 6h 37m 62% 44%
AmericanDetails → SDF 12:00 → CLT 13:38AA 5395 · flown by PSA 47m Charlotte CLT 14:25 → LAS 16:03AA 750 7h 03m 55% 39%
AmericanDetails → SDF 19:50 → DFW 21:12AA 2519 1h 47m Dallas-Fort Worth DFW 22:59 → LAS 23:48AA 2998 6h 58m 69% 33%

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
MCO · 1h 20m · leaves 06:40 3%
ATL · 1h 20m · leaves 08:10 7%
ORD · 1h 04m · leaves 07:15 8%
Afternoon and evening
MDW · 1h 05m · leaves 15:35 19%
CLT · 1h 06m · leaves 15:39 24%
DTW · 49m · leaves 14:19 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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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