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 17% of the time at 9 am and barely half the time at 6 pm.

Nonstops (seasonal or thin)


United	ORD	SJC	4h 55m	69%	1.7%	293	Flying now
American	ORD	SJC	–	88%few flights	0.0%	8	Not 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 (San Jose is 2 h behind Chicago). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	ORD 07:35 → LAX 10:01DL 1556	2h 56m Los Angeles	LAX 12:57 → SJC 14:19DL 3842 · flown by SkyWest	8h 44m	100%	90%
Alaska Details →	ORD 08:02 → SEA 10:37AS 587	3h 41m Seattle	SEA 14:18 → SJC 16:32AS 1366	10h 30m	98%	87%
Alaska Details →	ORD 07:20 → PDX 09:45AS 413	2h 00m Portland	PDX 11:45 → SJC 13:35AS 1632	8h 15m	96%	84%
Delta Details →	ORD 06:30 → MSP 08:06DL 1717	1h 59m Minneapolis	MSP 10:05 → SJC 12:05DL 2383	7h 35m	95%	84%
Delta Details →	ORD 05:30 → ATL 08:33DL 1264	1h 07m Atlanta	ATL 09:40 → SJC 11:36DL 809	8h 06m	91%	80%
Delta Details →	ORD 06:55 → SEA 09:31DL 2041	2h 14m Seattle	SEA 11:45 → SJC 14:11DL 3789 · flown by SkyWest	9h 16m	97%	80%
Delta Details →	ORD 13:00 → SEA 15:43DL 1564	2h 07m Seattle	SEA 17:50 → SJC 20:12DL 4100 · flown by SkyWest	9h 12m	94%	79%
Delta Details →	ORD 15:22 → ATL 18:36DL 1477	2h 23m Atlanta	ATL 20:59 → SJC 22:49DL 933	9h 34m	96%	79%
Tight connection: often missed
Alaska Details →	ORD 14:12 → PDX 16:47AS 325	53m Portland	PDX 17:40 → SJC 19:32AS 2113 · flown by Horizon	7h 20m	63%	51%
American Details →	ORD 17:34 → PHX 19:19AA 3261	1h 32m Phoenix	PHX 20:51 → SJC 22:41AA 1197	7h 07m	74%	45%
American Details →	ORD 08:30 → DFW 11:04AA 1555	56m Dallas-Fort Worth	DFW 12:00 → SJC 13:35AA 436	7h 03m	68%	41%

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 07m · leaves 05:30 9%

PHX · 55m · leaves 07:25 17%

SAN · 1h 01m · leaves 06:20 25%

Afternoon and evening

LAX · 1h 02m · leaves 14:42 31%

PDX · 53m · leaves 14:12 37%

MSP · 50m · leaves 15:55 53%

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.


American AA 2284 ORD 08:00 → PDX Alaska AS 3210 PDX 14:30 → SJC Connection details →	3h 58m	10h 25m	99%	95%
American AA 2434 ORD 05:00 → PHX Southwest WN 3336 PHX 09:40 → SJC Connection details →	3h 08m	8h 35m	97%	91%
American AA 1979 ORD 09:02 → LAX Delta DL 3822 LAX 14:32 → SJC Connection details →	3h 08m	8h 44m	95%	90%

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