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

No nonstop, and no clear pattern: the best connection reaches Oakland on time 87% of the time.

Best connections, one ticket

Ranked by chance you reach Oakland on time. Total trip = scheduled departure to arrival, layover included (Oakland is 2 h behind Chicago). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	ORD 14:12 → PDX 16:47AS 325	3h 07m Portland	PDX 19:54 → OAK 21:41AS 2036 · flown by Horizon	9h 29m	98%	87%
Alaska Details →	ORD 06:20 → SAN 08:54AS 1470	3h 36m San Diego	SAN 12:30 → OAK 14:10AS 3218 · flown by SkyWest	9h 50m	98%	82%
Alaska Details →	ORD 06:00 → SEA 08:38AS 715	3h 03m Seattle	SEA 11:41 → OAK 13:59AS 1328	9h 59m	99%	71%
Alaska Details →	ORD 13:01 → SEA 15:42AS 579	1h 43m Seattle	SEA 17:25 → OAK 19:33AS 706	8h 32m	90%	67%
Tight connection: often missed
Alaska Details →	ORD 08:02 → SEA 10:37AS 587	1h 04m Seattle	SEA 11:41 → OAK 13:59AS 1328	7h 57m	72%	52%
Alaska Details →	ORD 14:12 → PDX 16:47AS 325	46m Portland	PDX 17:33 → OAK 19:23AS 2082 · flown by Horizon	7h 11m	50%	49%

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

SEA · 1h 04m · leaves 08:02 28%

Afternoon and evening

PDX · 46m · leaves 14:12 50%

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.


United UA 1994 ORD 09:00 → PDX Alaska AS 2035 PDX 15:08 → OAK Connection details →	3h 30m	9h 55m	99%	99%
United UA 1972 ORD 08:55 → SLC Delta DL 3903 SLC 15:20 → OAK Connection details →	3h 41m	9h 28m	99%	89%
American AA 2434 ORD 05:00 → PHX Southwest WN 2680 PHX 09:40 → OAK Connection details →	3h 08m	8h 35m	97%	87%

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