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 85% on time.

Nonstops


Delta	SEA	EUG	1h 20m	90%	0.8%	1,059	Flying now
Alaska	SEA	EUG	1h 13m	82%	1.3%	1,565	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	SEA 05:30 → SLC 08:30DL 1128	2h 15m Salt Lake City	SLC 10:45 → EUG 11:52DL 4135 · flown by SkyWest	6h 22m	98%	91%
Delta Details →	SEA 09:30 → SLC 12:38DL 1016	2h 24m Salt Lake City	SLC 15:02 → EUG 16:02DL 4105 · flown by SkyWest	6h 32m	99%	87%
Delta Details →	SEA 17:59 → SLC 21:09DL 1165	1h 46m Salt Lake City	SLC 22:55 → EUG 23:55DL 3721 · flown by SkyWest	5h 56m	93%	87%
Alaska Details →	SEA 06:42 → PDX 07:37AS 2432 · flown by Horizon	3h 22m Portland	PDX 10:59 → EUG 11:57AS 3063 · flown by SkyWest	5h 15m	100%	87%
American Details →	SEA 06:16 → PHX 09:18AA 3792 · flown by Envoy	1h 03m Phoenix	PHX 10:21 → EUG 13:06AA 4114 · flown by Envoy	6h 50m	96%	87%
Alaska Details →	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	3h 09m Portland	PDX 14:30 → EUG 15:23AS 3042 · flown by SkyWest	5h 09m	100%	85%
Alaska Details →	SEA 06:03 → LAX 08:47AS 505	1h 18m Los Angeles	LAX 10:05 → EUG 12:18AS 2324 · flown by Horizon	6h 15m	92%	85%
United Details →	SEA 05:15 → SFO 07:35UA 5676 · flown by SkyWest	2h 50m San Francisco	SFO 10:25 → EUG 12:01UA 790	6h 46m	99%	79%
Tight connection: often missed
Alaska Details →	SEA 07:26 → SAN 10:23AS 1471	1h 02m San Diego	SAN 11:25 → EUG 14:00AS 3038 · flown by SkyWest	6h 34m	74%	60%
United Details →	SEA 07:00 → SFO 09:18UA 1578	1h 07m San Francisco	SFO 10:25 → EUG 12:01UA 790	5h 01m	22%	18%

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 10m · leaves 08:45 4%

PHX · 1h 03m · leaves 06:16 4%

LAX · 1h 18m · leaves 06:03 8%

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 3953 SEA 07:30 → PDX Alaska AS 3063 PDX 10:59 → EUG Connection details →	2h 20m	4h 27m	98%	86%
Delta DL 3818 SEA 09:30 → PDX Alaska AS 3042 PDX 14:30 → EUG Connection details →	3h 51m	5h 53m	100%	86%
Delta DL 2830 SEA 14:55 → LAX Alaska AS 3323 LAX 19:20 → EUG Connection details →	1h 40m	6h 43m	80%	76%

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