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 7% of the time at 9 am and almost half the time at 8 pm.

Nonstops (seasonal or thin)


Southwest	MIA	DAL	3h 10m	70%	0.7%	419	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 (Dallas is 1 h behind Miami). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	MIA 06:00 → ATL 08:05DL 1249	2h 10m Atlanta	ATL 10:15 → DAL 11:24DL 1115	6h 24m	97%	86%
Delta Details →	MIA 08:17 → ATL 10:20DL 1261	3h 39m Atlanta	ATL 13:59 → DAL 15:03DL 512	7h 55m	99%	84%
Southwest Details →	MIA 05:10 → HOU 06:45WN 2927	2h 45m Houston	HOU 09:30 → DAL 10:35WN 14	6h 25m	94%	80%
Southwest Details →	MIA 05:25 → MCO 06:30WN 4086	1h 20m Orlando	MCO 07:50 → DAL 09:25WN 738	5h 00m	96%	76%
Delta Details →	MIA 16:00 → ATL 18:22DL 1579	2h 53m Atlanta	ATL 21:15 → DAL 22:34DL 1104	7h 34m	95%	75%
Delta Details →	MIA 10:40 → ATL 12:48DL 2836	3h 50m Atlanta	ATL 16:38 → DAL 17:55DL 2780	8h 15m	99%	74%
Southwest Details →	MIA 17:00 → AUS 19:05WN 336	2h 50m Austin	AUS 21:55 → DAL 23:02WN 280	7h 03m	97%	51%
Southwest Details →	MIA 11:40 → BNA 13:00WN 2922	2h 25m Nashville	BNA 15:25 → DAL 17:20WN 489	6h 40m	95%	50%
Tight connection: often missed
Delta Details →	MIA 18:05 → ATL 20:22DL 1386	53m Atlanta	ATL 21:15 → DAL 22:34DL 1104	5h 29m	52%	41%
Southwest Details →	MIA 16:00 → BNA 17:25WN 4799	1h 33m Nashville	BNA 18:58 → DAL 20:52WN 490	5h 53m	64%	26%
Southwest Details →	MIA 16:20 → DEN 18:40WN 2926	1h 50m Denver	DEN 20:30 → DAL 23:30WN 1523	8h 10m	63%	25%

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

ATL · 1h 00m · leaves 07:10 7%

HOU · 1h 15m · leaves 05:10 15%

Afternoon and evening

MDW · 1h 00m · leaves 15:15 46%

ATL · 53m · leaves 18:05 48%

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.


American AA 1521 MIA 08:21 → BNA Southwest WN 5046 BNA 12:20 → DAL Connection details →	2h 33m	6h 54m	100%	85%
Frontier F9 2483 MIA 08:30 → ATL Delta DL 512 ATL 13:59 → DAL Connection details →	3h 09m	7h 42m	99%	82%
American AA 3205 MIA 06:56 → LGA Southwest WN 4570 LGA 12:30 → DAL Connection details →	2h 31m	9h 09m	97%	72%

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