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 8% of the time at 8 am and 1 time in 4 at 7 pm.

Nonstops


Southwest	ATL	SAT	2h 35m	83%	0.3%	305	Flying now
Delta	ATL	SAT	2h 31m	82%	1.8%	2,612	Flying now
Frontier	ATL	SAT	2h 45m	75%	0.0%	83	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 (San Antonio is 1 h behind Atlanta). Layovers up to 4 hours. Pick a connection for the details.


United Details →	ATL 05:30 → IAD 07:20UA 641	1h 05m Dulles	IAD 08:25 → SAT 10:59UA 1789	6h 29m	98%	91%
United Details →	ATL 11:10 → DEN 12:28UA 1327	1h 16m Denver	DEN 13:44 → SAT 16:55UA 1022	6h 45m	95%	86%
United Details →	ATL 07:05 → IAH 08:15UA 532	1h 24m Houston	IAH 09:39 → SAT 10:46UA 6201 · flown by Mesa	4h 41m	96%	84%
United Details →	ATL 11:37 → IAH 12:47UA 425	3h 48m Houston	IAH 16:35 → SAT 17:44UA 5379 · flown by SkyWest	7h 07m	99%	82%
Delta Details →	ATL 09:55 → MSP 11:30DL 2090	2h 50m Minneapolis	MSP 14:20 → SAT 17:11DL 2580	8h 16m	99%	82%
Southwest Details →	ATL 06:25 → DEN 07:30WN 2114	1h 50m Denver	DEN 09:20 → SAT 12:25WN 3149	7h 00m	100%	81%
Delta Details →	ATL 10:05 → SLC 12:10DL 387	1h 15m Salt Lake City	SLC 13:25 → SAT 17:13DL 2680	8h 08m	95%	81%
American Details →	ATL 09:43 → DFW 11:13AA 3390 · flown by Envoy	3h 32m Dallas-Fort Worth	DFW 14:45 → SAT 15:55AA 3777 · flown by Envoy	7h 12m	100%	80%
Tight connection: often missed
Delta Details →	ATL 17:10 → DTW 19:11DL 2067	59m Detroit	DTW 20:10 → SAT 22:21DL 1365	6h 11m	75%	53%
American Details →	ATL 14:10 → PHL 16:25AA 621	1h 20m Philadelphia	PHL 17:45 → SAT 20:46AA 3301	7h 36m	71%	40%
American Details →	ATL 19:00 → MIA 21:00AA 1367	52m Miami	MIA 21:52 → SAT 23:59AA 1468	5h 59m	25%	17%

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

IAD · 1h 05m · leaves 05:30 2%

PHL · 1h 15m · leaves 07:05 7%

EWR · 1h 04m · leaves 06:07 8%

Afternoon and evening

DFW · 47m · leaves 17:34 66%

MDW · 55m · leaves 19:35 74%

MIA · 52m · leaves 19:00 75%

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 2114 ATL 06:25 → DEN United UA 2625 DEN 09:35 → SAT Connection details →	2h 05m	7h 18m	100%	92%
Delta DL 995 ATL 09:50 → DEN United UA 1022 DEN 13:44 → SAT Connection details →	2h 37m	8h 05m	100%	88%
Delta DL 706 ATL 11:45 → DEN Frontier F9 2356 DEN 15:40 → SAT Connection details →	2h 41m	8h 11m	98%	81%

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