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

No clear winner: Southwest’s MSY → DAL flights land within a few points of 78% on time whatever the hour.

Nonstops


Southwest	MSY	DAL	1h 35m	78%	1.1%	2,287	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dallas on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	MSY 05:20 → ATL 07:53DL 1547	2h 22m Atlanta	ATL 10:15 → DAL 11:24DL 1115	6h 04m	99%	88%
Southwest Details →	MSY 07:45 → BNA 09:20WN 2981	3h 00m Nashville	BNA 12:20 → DAL 14:15WN 5046	6h 30m	100%	85%
Southwest Details →	MSY 07:30 → HOU 08:45WN 2995	2h 45m Houston	HOU 11:30 → DAL 12:40WN 22	5h 10m	100%	84%
Southwest Details →	MSY 05:55 → HOU 07:10WN 4547	2h 20m Houston	HOU 09:30 → DAL 10:35WN 14	4h 40m	95%	81%
Delta Details →	MSY 09:13 → ATL 11:43DL 3128	2h 16m Atlanta	ATL 13:59 → DAL 15:03DL 512	5h 59m	99%	80%
Delta Details →	MSY 15:22 → ATL 18:01DL 3157	3h 14m Atlanta	ATL 21:15 → DAL 22:34DL 1104	7h 12m	97%	76%
Southwest Details →	MSY 09:10 → HOU 10:25WN 934	3h 05m Houston	HOU 13:30 → DAL 14:40WN 30	5h 30m	100%	75%
Southwest Details →	MSY 15:15 → HOU 16:30WN 2998	2h 30m Houston	HOU 19:00 → DAL 20:10WN 52	4h 55m	98%	72%
Tight connection: often missed
Delta Details →	MSY 17:07 → ATL 19:45DL 924	1h 30m Atlanta	ATL 21:15 → DAL 22:34DL 1104	5h 27m	69%	55%
Southwest Details →	MSY 18:15 → BNA 19:45WN 4344	50m Nashville	BNA 20:35 → DAL 22:32WN 3230	4h 15m	30%	10%
Southwest Details →	MSY 19:10 → STL 21:00WN 3021	50m St Louis	STL 21:50 → DAL 23:30WN 3904	4h 20m	31%	9%

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

HOU · 1h 05m · leaves 09:10 10%

Afternoon and evening

HOU · 1h 05m · leaves 18:40 47%

STL · 50m · leaves 19:10 69%

BNA · 50m · leaves 18:15 70%

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 4949 MSY 15:20 → ATL Delta DL 1104 ATL 21:15 → DAL Connection details →	3h 25m	7h 14m	91%	73%
Delta DL 3128 MSY 09:13 → ATL Southwest WN 194 ATL 14:10 → DAL Connection details →	2h 27m	6h 07m	97%	55%
United UA 1376 MSY 08:04 → DEN Southwest WN 2354 DEN 11:40 → DAL Connection details →	1h 35m	6h 41m	83%	53%

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