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

No clear winner: Alaska’s SNA → PDX flights land within a few points of 94% on time whatever the hour.

Nonstops


Alaska	SNA	PDX	2h 27m	94%	1.2%	1,550	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SNA 08:50 → SMF 10:15WN 3868	4h 00m Sacramento	SMF 14:15 → PDX 15:45WN 422	6h 55m	100%	88%
Delta Details →	SNA 17:03 → SLC 19:59DL 1277	2h 51m Salt Lake City	SLC 22:50 → PDX 23:44DL 1373	6h 42m	98%	87%
Alaska Details →	SNA 08:05 → SEA 10:55AS 702	2h 50m Seattle	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	6h 43m	99%	86%
Southwest Details →	SNA 06:45 → SMF 08:25WN 2669	1h 47m Sacramento	SMF 10:12 → PDX 11:42WN 949	4h 57m	98%	86%
United Details →	SNA 08:45 → DEN 12:09UA 489	1h 18m Denver	DEN 13:27 → PDX 15:13UA 2455	6h 28m	95%	85%
Delta Details →	SNA 09:50 → SLC 12:47DL 1198	2h 37m Salt Lake City	SLC 15:24 → PDX 16:19DL 1244	6h 29m	98%	85%
Delta Details →	SNA 07:00 → SEA 10:05DL 3695 · flown by SkyWest	3h 30m Seattle	SEA 13:35 → PDX 14:46DL 4062 · flown by SkyWest	7h 46m	99%	85%
United Details →	SNA 10:20 → DEN 13:43UA 2843	2h 17m Denver	DEN 16:00 → PDX 17:46UA 1337	7h 26m	100%	84%
Tight connection: often missed
Alaska Details →	SNA 09:00 → SFO 10:36AS 3342 · flown by SkyWest	1h 32m San Francisco	SFO 12:08 → PDX 13:50AS 235	4h 50m	63%	38%
Alaska Details →	SNA 18:46 → SEA 21:34AS 454	55m Seattle	SEA 22:29 → PDX 23:30AS 1457	4h 44m	55%	37%
United Details →	SNA 18:20 → SFO 19:51UA 2657	59m San Francisco	SFO 20:50 → PDX 22:48UA 2413	4h 28m	40%	21%

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

DEN · 1h 11m · leaves 06:45 3%

SEA · 1h 10m · leaves 08:05 5%

SLC · 1h 00m · leaves 07:15 9%

Afternoon and evening

SEA · 55m · leaves 18:46 45%

SFO · 59m · leaves 18:20 60%

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.


Southwest WN 2669 SNA 06:45 → SMF Alaska AS 621 SMF 11:46 → PDX Connection details →	3h 21m	6h 33m	100%	98%
Southwest WN 4935 SNA 07:00 → OAK Alaska AS 3045 OAK 12:01 → PDX Connection details →	3h 21m	6h 44m	100%	98%
Southwest WN 3860 SNA 09:55 → SJC Alaska AS 1633 SJC 14:31 → PDX Connection details →	3h 21m	6h 20m	100%	92%

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