Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Nonstops (seasonal or thin)


Southwest	BNA	SAT	2h 35m	79%	0.6%	937	Flying now
Spirit	BNA	SAT	–	67%few flights	0.0%	3	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	BNA 06:30 → IAH 08:42UA 396	57m Houston	IAH 09:39 → SAT 10:46UA 6201 · flown by Mesa	4h 16m	94%	83%
Southwest Details →	BNA 05:02 → HOU 07:02WN 4430	2h 23m Houston	HOU 09:25 → SAT 10:25WN 1432	5h 23m	100%	81%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 02m Atlanta	ATL 08:22 → SAT 09:52DL 1676	4h 42m	95%	81%
Delta Details →	BNA 07:30 → ATL 09:44DL 2802	2h 31m Atlanta	ATL 12:15 → SAT 13:38DL 1408	6h 11m	97%	81%
American Details →	BNA 09:58 → DFW 12:13AA 3397 · flown by Envoy	2h 32m Dallas-Fort Worth	DFW 14:45 → SAT 15:55AA 3777 · flown by Envoy	5h 57m	98%	79%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	1h 11m Atlanta	ATL 09:42 → SAT 11:10DL 1121	4h 55m	94%	76%
Delta Details →	BNA 09:48 → ATL 12:01DL 3069	1h 44m Atlanta	ATL 13:45 → SAT 15:14DL 2009	5h 26m	97%	75%
American Details →	BNA 07:04 → DFW 09:20AA 2583	2h 41m Dallas-Fort Worth	DFW 12:01 → SAT 13:11AA 4084 · flown by Envoy	6h 07m	98%	75%
Tight connection: often missed
Southwest Details →	BNA 18:55 → HOU 21:02WN 534	1h 33m Houston	HOU 22:35 → SAT 23:30WN 4451	4h 35m	67%	36%
American Details →	BNA 17:41 → ORD 19:55AA 1570	1h 13m Chicago	ORD 21:08 → SAT 23:59AA 431	6h 18m	53%	24%
Southwest Details →	BNA 16:50 → DEN 18:50WN 504	1h 00m Denver	DEN 19:50 → SAT 23:08WN 2073	6h 20m	39%	13%

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 02m · leaves 05:10 5%

DFW · 1h 20m · leaves 07:04 9%

ORD · 50m · leaves 07:02 37%

Afternoon and evening

DEN · 1h 00m · leaves 16:50 61%

DAL · 53m · leaves 18:58 65%

DFW · 46m · leaves 15:31 71%

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 4712 BNA 09:15 → MCO Frontier F9 1653 MCO 13:45 → SAT Connection details →	1h 35m	6h 24m	79%	65%
Delta DL 2250 BNA 08:33 → ATL Southwest WN 416 ATL 13:15 → SAT Connection details →	2h 35m	6h 07m	98%	63%
Southwest WN 446 BNA 18:35 → ATL Delta DL 1508 ATL 23:00 → SAT Connection details →	2h 12m	5h 58m	68%	55%

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