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 3% of the time at 6 am and 64% of the time at 4 pm.

Nonstops


Delta	MFR	SEA	1h 39m	92%	1.0%	1,059	Flying now
Alaska	MFR	SEA	1h 24m	84%	2.1%	1,245	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	MFR 05:15 → PDX 06:14AS 2098 · flown by Horizon	1h 05m Portland	PDX 07:19 → SEA 08:20AS 2420 · flown by Horizon	3h 05m	97%	90%
Alaska Details →	MFR 06:08 → LAX 08:18AS 3322 · flown by SkyWest	1h 42m Los Angeles	LAX 10:00 → SEA 12:48AS 798	6h 40m	98%	86%
Alaska Details →	MFR 12:30 → PDX 13:34AS 3300 · flown by SkyWest	1h 56m Portland	PDX 15:30 → SEA 16:30AS 3408 · flown by SkyWest	4h 00m	98%	78%
Alaska Details →	MFR 16:34 → LAX 18:35AS 2329 · flown by Horizon	1h 34m Los Angeles	LAX 20:09 → SEA 22:58AS 614	6h 24m	88%	77%
Alaska Details →	MFR 19:35 → PDX 20:34AS 2107 · flown by Horizon	56m Portland	PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon	2h 52m	88%	76%
United Details →	MFR 14:11 → SFO 15:35UA 1754	2h 53m San Francisco	SFO 18:28 → SEA 20:53UA 1577	6h 42m	98%	68%
Alaska Details →	MFR 15:52 → PDX 16:50AS 2081 · flown by Horizon	2h 48m Portland	PDX 19:38 → SEA 20:33AS 2313 · flown by Horizon	4h 41m	98%	54%
United Details →	MFR 06:00 → SFO 07:24UA 717	2h 51m San Francisco	SFO 10:15 → SEA 12:34UA 2192	6h 34m	99%	46%
Tight connection: often missed
United Details →	MFR 14:11 → SFO 15:35UA 1754	52m San Francisco	SFO 16:27 → SEA 18:47UA 2279	4h 36m	36%	28%
United Details →	MFR 18:35 → SFO 20:07UA 5883 · flown by SkyWest	47m San Francisco	SFO 20:54 → SEA 23:19UA 1007	4h 44m	43%	27%

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

PDX · 1h 05m · leaves 05:15 3%

Afternoon and evening

PDX · 56m · leaves 19:35 12%

SFO · 52m · leaves 14:11 64%

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 3300 MFR 12:30 → PDX Delta DL 4062 PDX 15:26 → SEA Connection details →	1h 52m	4h 11m	93%	83%
Alaska AS 2098 MFR 05:15 → PDX Delta DL 3953 PDX 09:30 → SEA Connection details →	3h 16m	5h 40m	99%	81%
Alaska AS 2081 MFR 15:52 → PDX Delta DL 3923 PDX 20:44 → SEA Connection details →	3h 54m	6h 04m	99%	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