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 3% of the time at 8 am and 36% of the time at 9 pm.

Nonstops


United	BNA	SFO	5h 01m	77%	0.7%	847	Flying now
Southwest	BNA	SFO	5h 00m	53%	0.6%	311	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 2 h behind Nashville). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 05m Atlanta	ATL 08:25 → SFO 10:20DL 693	7h 15m	95%	75%
United Details →	BNA 11:10 → IAH 13:23UA 1366	2h 07m Houston	IAH 15:30 → SFO 17:35UA 589	8h 25m	92%	74%
United Details →	BNA 08:30 → IAD 11:17UA 1709	1h 23m Dulles	IAD 12:40 → SFO 15:27UA 1434	8h 57m	95%	73%
United Details →	BNA 10:26 → DEN 12:23UA 502	3h 24m Denver	DEN 15:47 → SFO 17:30UA 2633	9h 04m	98%	72%
United Details →	BNA 07:00 → DEN 08:55UA 1716	2h 26m Denver	DEN 11:21 → SFO 13:04UA 1561	8h 04m	98%	70%
Alaska Details →	BNA 07:02 → SEA 10:04AS 281	1h 38m Seattle	SEA 11:42 → SFO 14:04AS 655	9h 02m	97%	67%
Delta Details →	BNA 06:25 → LAX 08:46DL 891	3h 14m Los Angeles	LAX 12:00 → SFO 13:26DL 2725	9h 03m	99%	66%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	1h 14m Atlanta	ATL 09:45 → SFO 11:45DL 672	7h 30m	95%	66%
Tight connection: often missed
United Details →	BNA 18:30 → IAD 21:23UA 1460	58m Dulles	IAD 22:21 → SFO 01:15 +1UA 367	8h 45m	64%	53%
United Details →	BNA 16:59 → ORD 19:00UA 1884	1h 04m Chicago	ORD 20:04 → SFO 22:57UA 1495	7h 58m	59%	26%
American Details →	BNA 17:41 → ORD 19:55AA 1570	1h 05m Chicago	ORD 21:00 → SFO 23:58AA 3054	8h 01m	53%	16%

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

MSP · 1h 12m · leaves 06:00 3%

ATL · 1h 14m · leaves 06:15 5%

DFW · 1h 07m · leaves 08:01 11%

Afternoon and evening

ORD · 1h 05m · leaves 17:41 47%

DEN · 1h 10m · leaves 18:40 58%

LAS · 53m · leaves 20:08 66%

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 3993 BNA 07:00 → LAS United UA 574 LAS 11:30 → SFO Connection details →	2h 40m	8h 12m	100%	69%
Southwest WN 800 BNA 05:15 → DEN Frontier F9 1229 DEN 09:47 → SFO Connection details →	2h 47m	8h 28m	100%	66%
Southwest WN 500 BNA 11:40 → DEN United UA 2633 DEN 15:47 → SFO Connection details →	2h 22m	7h 50m	89%	64%

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