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 SAT → DAL flights land within a few points of 84% on time whatever the hour.

Nonstops


Southwest	SAT	DAL	1h 10m	84%	1.1%	2,743	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.


Southwest Details →	SAT 06:45 → PHX 07:05WN 4123	1h 10m Phoenix	PHX 08:15 → DAL 12:40WN 875	5h 55m	96%	89%
Delta Details →	SAT 05:25 → ATL 08:53DL 1073	1h 22m Atlanta	ATL 10:15 → DAL 11:24DL 1115	5h 59m	96%	85%
Southwest Details →	SAT 05:25 → HOU 06:32WN 1315	2h 58m Houston	HOU 09:30 → DAL 10:35WN 14	5h 10m	100%	85%
Southwest Details →	SAT 05:25 → DEN 06:38WN 1471	2h 07m Denver	DEN 08:45 → DAL 11:40WN 1360	6h 15m	100%	72%
Delta Details →	SAT 10:47 → ATL 14:11DL 1676	2h 27m Atlanta	ATL 16:38 → DAL 17:55DL 2780	7h 08m	98%	72%
Southwest Details →	SAT 12:50 → HOU 13:55WN 3566	2h 05m Houston	HOU 16:00 → DAL 17:10WN 40	4h 20m	96%	71%
Southwest Details →	SAT 11:00 → PHX 11:20WN 3587	2h 05m Phoenix	PHX 13:25 → DAL 17:50WN 3256	6h 50m	100%	67%
Southwest Details →	SAT 06:20 → SAN 07:10WN 3545	1h 00m San Diego	SAN 08:10 → DAL 13:15WN 4751	6h 55m	78%	66%
Tight connection: often missed
Southwest Details →	SAT 17:35 → PHX 17:55WN 3585	1h 10m Phoenix	PHX 19:05 → DAL 23:30WN 193	5h 55m	65%	25%
Southwest Details →	SAT 13:48 → DEN 15:02WN 4678	53m Denver	DEN 15:55 → DAL 19:00WN 1388	5h 12m	64%	24%
Southwest Details →	SAT 16:55 → BNA 19:10WN 4193	1h 25m Nashville	BNA 20:35 → DAL 22:32WN 3230	5h 35m	67%	22%

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

PHX · 1h 10m · leaves 06:45 4%

SAN · 1h 00m · leaves 06:20 22%

Afternoon and evening

MDW · 1h 03m · leaves 14:48 27%

DEN · 53m · leaves 13:48 36%

HOU · 55m · leaves 18:30 43%

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.


United UA 1464 SAT 05:40 → DEN Southwest WN 1360 DEN 08:45 → DAL Connection details →	1h 48m	6h 00m	93%	67%
Southwest WN 3556 SAT 15:40 → ATL Delta DL 1104 ATL 21:15 → DAL Connection details →	2h 10m	6h 54m	75%	60%
American AA 3906 SAT 08:41 → PHX Southwest WN 3255 PHX 10:55 → DAL Connection details →	1h 39m	6h 39m	68%	50%

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