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 13% of the time at 10 am and barely half the time at 7 pm.

Nonstops


Delta	MIA	BOS	3h 26m	72%	2.8%	889	Flying now
American	MIA	BOS	3h 22m	71%	1.7%	2,273	Flying now
Spirit	MIA	BOS	3h 22m	57%	6.5%	184	Not flying now
JetBlue	MIA	BOS	3h 29m	77%few flights	0.0%	35	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	MIA 06:21 → CLT 08:35AA 2187	2h 43m Charlotte	CLT 11:18 → BOS 13:33AA 1611	7h 12m	98%	86%
United Details →	MIA 06:30 → IAH 08:24UA 2074	1h 26m Houston	IAH 09:50 → BOS 14:48UA 2393	8h 18m	100%	82%
United Details →	MIA 07:07 → EWR 10:11UA 1864	1h 48m Newark	EWR 11:59 → BOS 13:16UA 1669	6h 09m	98%	81%
Delta Details →	MIA 06:00 → ATL 08:05DL 1249	1h 55m Atlanta	ATL 10:00 → BOS 12:44DL 855	6h 44m	97%	81%
Delta Details →	MIA 07:10 → ATL 09:15DL 1211	1h 55m Atlanta	ATL 11:10 → BOS 13:47DL 862	6h 37m	98%	80%
Southwest Details →	MIA 07:15 → STL 09:05WN 2931	1h 00m St Louis	STL 10:05 → BOS 13:40WN 3891	6h 25m	95%	77%
Southwest Details →	MIA 06:20 → BWI 08:55WN 974	1h 45m Baltimore	BWI 10:40 → BOS 12:10WN 887	5h 50m	97%	77%
American Details →	MIA 06:45 → PHL 09:38AA 2129	3h 12m Philadelphia	PHL 12:50 → BOS 14:23AA 2882	7h 38m	98%	77%
Tight connection: often missed
Delta Details →	MIA 19:16 → ATL 21:34DL 1323	1h 16m Atlanta	ATL 22:50 → BOS 01:31 +1DL 865	6h 15m	71%	54%
American Details →	MIA 12:51 → LGA 16:00AA 3229	1h 59m New York	LGA 17:59 → BOS 19:23AA 4374 · flown by Republic	6h 33m	67%	45%
American Details →	MIA 15:30 → DFW 17:50AA 1199	1h 23m Dallas-Fort Worth	DFW 19:13 → BOS 23:59AA 1767	8h 29m	69%	26%

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

DCA · 1h 14m · leaves 06:19 5%

STL · 1h 00m · leaves 07:15 5%

DFW · 1h 10m · leaves 05:25 5%

Afternoon and evening

ATL · 53m · leaves 18:05 48%

ORD · 52m · leaves 16:10 51%

BWI · 1h 00m · leaves 18:50 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 491 MIA 06:19 → DCA Delta DL 5592 DCA 12:55 → BOS Connection details →	3h 55m	8h 20m	100%	81%
American AA 2090 MIA 07:35 → MCO Delta DL 1580 MCO 11:20 → BOS Connection details →	2h 30m	6h 49m	100%	81%
American AA 2582 MIA 08:20 → SJU Delta DL 1780 SJU 14:05 → BOS Connection details →	3h 01m	9h 54m	97%	77%

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