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 70-minute layover misses 7% of the time at 10 am and 36% of the time at 10 pm.

Nonstops


United	MIA	SFO	6h 33m	72%	0.3%	613	Flying now
American	MIA	SFO	6h 24m	69%	0.8%	1,133	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach San Francisco on time. Total trip = scheduled departure to arrival, layover included (San Francisco is 3 h behind Miami). Layovers up to 4 hours. Pick a connection for the details.


United Details →	MIA 16:53 → IAH 18:56UA 1216	3h 03m Houston	IAH 21:59 → SFO 00:05 +1UA 1609	10h 12m	97%	77%
United Details →	MIA 07:37 → DEN 10:00UA 2045	3h 25m Denver	DEN 13:25 → SFO 15:09UA 1812	10h 32m	99%	75%
American Details →	MIA 09:55 → JFK 13:04AA 1052	3h 26m New York	JFK 16:30 → SFO 20:05AA 15	13h 10m	99%	71%
Delta Details →	MIA 08:17 → ATL 10:20DL 1261	2h 36m Atlanta	ATL 12:56 → SFO 14:50DL 750	9h 37m	99%	71%
United Details →	MIA 07:07 → EWR 10:11UA 1864	3h 19m Newark	EWR 13:30 → SFO 16:28UA 1227	12h 21m	99%	70%
American Details →	MIA 17:30 → LAX 20:13AA 3066	2h 19m Los Angeles	LAX 22:32 → SFO 23:59AA 6510 · flown by SkyWest	9h 29m	88%	70%
United Details →	MIA 12:29 → IAH 14:23UA 470	1h 07m Houston	IAH 15:30 → SFO 17:35UA 589	8h 06m	88%	70%
United Details →	MIA 06:30 → IAH 08:24UA 2074	1h 11m Houston	IAH 09:35 → SFO 11:35UA 2358	8h 05m	96%	70%
Tight connection: often missed
United Details →	MIA 16:10 → ORD 18:53UA 2106	1h 11m Chicago	ORD 20:04 → SFO 22:57UA 1495	9h 47m	68%	30%
American Details →	MIA 14:28 → DFW 16:50AA 2762	1h 02m Dallas-Fort Worth	DFW 17:52 → SFO 19:39AA 3072	8h 11m	69%	27%
American Details →	MIA 17:00 → ORD 19:53AA 3056	1h 07m Chicago	ORD 21:00 → SFO 23:58AA 3054	9h 42m	64%	19%

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

CLT · 1h 14m · leaves 08:40 3%

IAH · 1h 11m · leaves 06:30 4%

JFK · 1h 15m · leaves 07:05 7%

Afternoon and evening

ATL · 1h 06m · leaves 19:16 36%

PHX · 55m · leaves 17:40 39%

DFW · 48m · leaves 17:30 52%

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 4086 MIA 05:25 → MCO United UA 2855 MCO 08:09 → SFO Connection details →	1h 39m	8h 28m	92%	86%
American AA 1739 MIA 08:57 → DEN United UA 1812 DEN 13:25 → SFO Connection details →	2h 06m	9h 12m	97%	74%
American AA 3081 MIA 10:05 → DFW United UA 454 DFW 15:21 → SFO Connection details →	3h 04m	10h 08m	93%	73%

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