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

No clear winner: Southwest’s SNA → SJC flights land within a few points of 87% on time whatever the hour.

Nonstops


Southwest	SNA	SJC	1h 20m	87%	0.7%	2,676	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SNA 07:05 → PHX 08:30WN 3887	1h 10m Phoenix	PHX 09:40 → SJC 11:35WN 3336	4h 30m	100%	96%
Southwest Details →	SNA 09:00 → LAS 10:10WN 2218	2h 00m Las Vegas	LAS 12:10 → SJC 13:45WN 1242	4h 45m	100%	90%
Alaska Details →	SNA 10:57 → PDX 13:21AS 1405	1h 09m Portland	PDX 14:30 → SJC 16:25AS 3210 · flown by SkyWest	5h 28m	94%	90%
Alaska Details →	SNA 07:00 → PDX 09:24AS 750	2h 21m Portland	PDX 11:45 → SJC 13:35AS 1632	6h 35m	100%	88%
Delta Details →	SNA 09:50 → SLC 12:47DL 1198	2h 24m Salt Lake City	SLC 15:11 → SJC 16:07DL 1260	6h 17m	98%	87%
Southwest Details →	SNA 07:45 → LAS 09:05WN 4296	3h 40m Las Vegas	LAS 12:45 → SJC 14:20WN 4223	6h 35m	100%	85%
Delta Details →	SNA 07:15 → SLC 10:15DL 1185	1h 25m Salt Lake City	SLC 11:40 → SJC 12:38DL 1254	5h 23m	93%	84%
Alaska Details →	SNA 10:28 → SEA 13:17AS 471	1h 01m Seattle	SEA 14:18 → SJC 16:32AS 1366	6h 04m	92%	82%
Tight connection: often missed
Delta Details →	SNA 14:05 → SEA 17:00DL 952	50m Seattle	SEA 17:50 → SJC 20:12DL 4100 · flown by SkyWest	6h 07m	53%	46%
Southwest Details →	SNA 17:15 → PHX 18:35WN 4514	1h 10m Phoenix	PHX 19:45 → SJC 21:35WN 3337	4h 20m	70%	33%
Southwest Details →	SNA 17:00 → LAS 18:10WN 2187	1h 05m Las Vegas	LAS 19:15 → SJC 20:45WN 3865	3h 45m	68%	29%

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 07:45 2%

Afternoon and evening

PHX · 1h 10m · leaves 17:15 30%

LAS · 50m · leaves 19:00 40%

SEA · 50m · leaves 14:05 47%

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.


Alaska AS 1325 SNA 06:47 → SEA Delta DL 3789 SEA 11:45 → SJC Connection details →	2h 03m	7h 24m	98%	81%
American AA 2660 SNA 09:49 → PHX Southwest WN 4102 PHX 13:55 → SJC Connection details →	2h 43m	5h 54m	97%	81%
Southwest WN 4296 SNA 07:45 → LAS Frontier F9 4103 LAS 11:39 → SJC Connection details →	2h 34m	5h 32m	100%	78%

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