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 4% of the time at 6 am and barely half the time at 4 pm.

Nonstops


Delta	RDM	SEA	1h 29m	89%	1.5%	1,059	Flying now
Alaska	RDM	SEA	1h 17m	82%	2.3%	1,694	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 →	RDM 05:25 → PDX 06:15AS 2043 · flown by Horizon	1h 04m Portland	PDX 07:19 → SEA 08:20AS 2420 · flown by Horizon	2h 55m	96%	91%
Delta Details →	RDM 12:24 → SLC 15:12DL 3727 · flown by SkyWest	2h 08m Salt Lake City	SLC 17:20 → SEA 18:36DL 871	6h 12m	98%	79%
Alaska Details →	RDM 12:34 → PDX 13:35AS 3074 · flown by SkyWest	1h 55m Portland	PDX 15:30 → SEA 16:30AS 3408 · flown by SkyWest	3h 56m	100%	79%
Alaska Details →	RDM 19:49 → PDX 20:40AS 2218 · flown by Horizon	50m Portland	PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon	2h 38m	81%	73%
Alaska Details →	RDM 11:26 → BUR 13:31AS 3223 · flown by SkyWest	1h 21m Burbank	BUR 14:52 → SEA 17:34AS 537	6h 08m	91%	69%
United Details →	RDM 19:39 → SFO 21:27UA 5534 · flown by SkyWest	1h 32m San Francisco	SFO 22:59 → SEA 01:29 +1UA 5579 · flown by SkyWest	5h 50m	80%	56%
Alaska Details →	RDM 16:00 → PDX 16:50AS 2167 · flown by Horizon	2h 48m Portland	PDX 19:38 → SEA 20:33AS 2313 · flown by Horizon	4h 33m	100%	55%
Tight connection: often missed
United Details →	RDM 15:51 → SFO 17:39UA 4739 · flown by SkyWest	49m San Francisco	SFO 18:28 → SEA 20:53UA 1577	5h 02m	58%	40%
United Details →	RDM 13:49 → SFO 15:32UA 2262	55m San Francisco	SFO 16:27 → SEA 18:47UA 2279	4h 58m	46%	35%

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 04m · leaves 05:25 4%

Afternoon and evening

PDX · 50m · leaves 19:49 19%

SFO · 55m · leaves 13:49 54%

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 3074 RDM 12:34 → PDX Delta DL 4062 PDX 15:26 → SEA Connection details →	1h 51m	4h 07m	93%	83%
Alaska AS 2043 RDM 05:25 → PDX Delta DL 3953 PDX 09:30 → SEA Connection details →	3h 15m	5h 30m	99%	83%
Alaska AS 2167 RDM 16:00 → PDX Delta DL 3923 PDX 20:44 → SEA Connection details →	3h 54m	5h 56m	100%	79%

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