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

No clear winner: airlines and hours on this route all land within a few points of 9 in 10 on time.

Nonstops


Delta	SLC	OAK	2h 08m	92%	0.2%	1,074	Flying now
Southwest	SLC	OAK	1h 55m	87%	0.2%	569	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Oakland on time. Total trip = scheduled departure to arrival, layover included (Oakland is 1 h behind Salt Lake City). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	SLC 11:22 → PDX 12:23AS 2333 · flown by Horizon	2h 45m Portland	PDX 15:08 → OAK 16:55AS 2035 · flown by Horizon	6h 33m	100%	100%
Alaska Details →	SLC 12:46 → PDX 13:49AS 3117 · flown by SkyWest	3h 44m Portland	PDX 17:33 → OAK 19:23AS 2082 · flown by Horizon	7h 37m	100%	98%
Southwest Details →	SLC 06:25 → LAS 06:50WN 4205	1h 45m Las Vegas	LAS 08:35 → OAK 10:10WN 1254	4h 45m	100%	92%
Southwest Details →	SLC 06:15 → PHX 06:55WN 3751	2h 45m Phoenix	PHX 09:40 → OAK 11:35WN 2680	6h 20m	98%	91%
Alaska Details →	SLC 07:40 → SAN 08:50AS 3018 · flown by SkyWest	3h 40m San Diego	SAN 12:30 → OAK 14:10AS 3218 · flown by SkyWest	7h 30m	100%	84%
Southwest Details →	SLC 08:20 → LGB 09:30WN 543	2h 25m Long Beach	LGB 11:55 → OAK 13:10WN 2488	5h 50m	100%	82%
Alaska Details →	SLC 12:51 → SEA 14:04AS 664	3h 21m Seattle	SEA 17:25 → OAK 19:33AS 706	7h 42m	98%	74%
Southwest Details →	SLC 14:50 → LAS 15:15WN 4338	1h 55m Las Vegas	LAS 17:10 → OAK 18:45WN 2286	4h 55m	100%	67%
Tight connection: often missed
Alaska Details →	SLC 09:10 → SEA 10:35AS 3381 · flown by SkyWest	1h 06m Seattle	SEA 11:41 → OAK 13:59AS 1328	5h 49m	64%	47%
Southwest Details →	SLC 20:30 → LAS 20:55WN 3745	1h 00m Las Vegas	LAS 21:55 → OAK 23:25WN 2288	3h 55m	58%	34%
Southwest Details →	SLC 19:35 → DEN 21:05WN 3741	1h 05m Denver	DEN 22:10 → OAK 23:45WN 1650	5h 10m	65%	25%

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

PHX · 50m · leaves 06:15 16%

SEA · 1h 06m · leaves 09:10 36%

Afternoon and evening

SAN · 1h 09m · leaves 14:39 11%

DEN · 1h 05m · leaves 19:35 35%

LAS · 1h 00m · leaves 20:30 42%

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.


Delta DL 1209 SLC 11:15 → PDX Alaska AS 2035 PDX 15:08 → OAK Connection details →	2h 58m	6h 40m	97%	96%
Delta DL 3681 SLC 07:55 → BUR Southwest WN 803 BUR 11:35 → OAK Connection details →	2h 31m	5h 55m	97%	90%
Delta DL 1302 SLC 08:00 → ONT Southwest WN 3154 ONT 11:05 → OAK Connection details →	2h 18m	5h 20m	100%	89%

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