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 5% of the time at 9 am and 15% of the time at 10 pm.

Nonstops (seasonal or thin)


Delta	SJC	ATL	4h 37m	93%	1.4%	901	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest + Deltatwo ticketsDetails →	SJC 16:40 → ONT 18:00WN 3691	4h 00m Ontario	ONT 22:00 → ATL 05:18 +1DL 2892	9h 38m	100%	95%
Southwest Details →	SJC 22:55 → MDW 05:00WN 3886	2h 15m Chicago	MDW 07:15 → ATL 10:05 +1WN 3054	8h 10m	100%	93%
Southwest Details →	SJC 21:40 → BWI 05:45WN 621	2h 35m Baltimore	BWI 08:20 → ATL 10:20 +1WN 3931	9h 38m	100%	92%
Alaska + Deltatwo ticketsDetails →	SJC 17:02 → SAN 18:36AS 3211 · flown by SkyWest	3h 54m San Diego	SAN 22:30 → ATL 05:50 +1DL 819	9h 48m	100%	90%
Delta Details →	SJC 17:55 → SEA 20:13DL 3897 · flown by SkyWest	3h 46m Seattle	SEA 23:59 → ATL 07:46 +1DL 652	10h 51m	100%	88%
Southwest + Deltatwo ticketsDetails →	SJC 07:40 → LAS 09:10WN 1277	2h 31m Las Vegas	LAS 11:41 → ATL 18:47DL 748	8h 07m	100%	88%
Southwest + Deltatwo ticketsDetails →	SJC 09:00 → SAN 10:25WN 3507	2h 37m San Diego	SAN 13:02 → ATL 20:35DL 712	8h 35m	100%	87%
Southwest + Deltatwo ticketsDetails →	SJC 06:30 → SAN 08:00WN 3489	2h 43m San Diego	SAN 10:43 → ATL 18:12DL 725	8h 42m	100%	87%
Tight connection: often missed
Southwest Details →	SJC 20:20 → LAS 21:50WN 3675	1h 00m Las Vegas	LAS 22:50 → ATL 05:45 +1WN 2179	6h 25m	61%	51%
American Details →	SJC 14:24 → DFW 20:06AA 436	1h 04m Dallas-Fort Worth	DFW 21:10 → ATL 00:19 +1AA 2749	6h 55m	66%	34%
Southwest Details →	SJC 14:35 → DEN 18:00WN 3668	1h 05m Denver	DEN 19:05 → ATL 00:55 +1WN 1472	6h 30m	33%	4%

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

LAS · 50m · leaves 06:00 2%

SLC · 1h 00m · leaves 06:00 5%

LAX · 1h 06m · leaves 07:00 9%

Afternoon and evening

LAX · 50m · leaves 20:19 15%

DFW · 1h 04m · leaves 14:24 34%

LAS · 1h 00m · leaves 20:20 39%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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