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 90-minute layover misses 4% of the time at 9 am and 28% of the time at 7 pm.

Nonstops


Delta	MIA	ATL	2h 10m	78%	1.8%	3,308	Flying now
Frontier	MIA	ATL	2h 30m	70%	1.8%	896	Flying now
American	MIA	ATL	2h 04m	70%	0.8%	1,805	Flying now
Spirit	MIA	ATL	1h 58m	75%	4.4%	252	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	MIA 07:15 → STL 09:05WN 2931	55m St Louis	STL 10:00 → ATL 12:35WN 236	5h 20m	95%	87%
Southwest Details →	MIA 05:25 → MCO 06:30WN 4086	1h 30m Orlando	MCO 08:00 → ATL 09:35WN 2591	4h 10m	96%	84%
Delta Details →	MIA 06:35 → MSP 09:25DL 1056	1h 15m Minneapolis	MSP 10:40 → ATL 14:05DL 1046	7h 30m	94%	80%
American Details →	MIA 06:56 → LGA 09:59AA 3205	1h 52m New York	LGA 11:51 → ATL 14:28AA 4605 · flown by Republic	7h 30m	97%	79%
Delta Details →	MIA 06:25 → LGA 09:29DL 2387	1h 30m New York	LGA 10:59 → ATL 13:20DL 993	6h 55m	96%	76%
Delta Details →	MIA 07:05 → JFK 10:00DL 2428	1h 00m New York	JFK 11:00 → ATL 13:33DL 1029	6h 23m	88%	72%
United Details →	MIA 08:48 → IAH 10:42UA 2417	1h 13m Houston	IAH 11:55 → ATL 15:16UA 4079 · flown by Mesa	6h 28m	93%	72%
Delta Details →	MIA 08:15 → LGA 11:18DL 2339	2h 41m New York	LGA 13:59 → ATL 16:30DL 988	8h 14m	98%	70%
Tight connection: often missed
Delta Details →	MIA 14:40 → MSP 17:40DL 2129	55m Minneapolis	MSP 18:35 → ATL 22:15DL 1026	7h 35m	72%	55%
American Details →	MIA 15:30 → DFW 17:50AA 1199	1h 36m Dallas-Fort Worth	DFW 19:26 → ATL 22:36AA 3212	7h 05m	73%	38%
American Details →	MIA 12:21 → ORD 14:57AA 2910	1h 02m Chicago	ORD 15:59 → ATL 19:02AA 1375	6h 42m	73%	32%

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

STL · 55m · leaves 07:15 5%

MSP · 1h 15m · leaves 06:35 6%

IAH · 1h 13m · leaves 08:48 7%

Afternoon and evening

PHL · 48m · leaves 18:12 46%

LGA · 1h 06m · leaves 15:22 48%

BNA · 1h 10m · leaves 16:00 60%

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 3609 MIA 08:02 → JAX Delta DL 2356 JAX 11:48 → ATL Connection details →	2h 21m	4h 59m	100%	93%
American AA 2405 MIA 08:05 → RDU Delta DL 1488 RDU 13:49 → ATL Connection details →	3h 29m	7h 15m	100%	88%
American AA 4163 MIA 10:32 → CMH Delta DL 2200 CMH 17:01 → ATL Connection details →	3h 36m	8h 11m	100%	88%

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