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

No clear winner: United’s SFO → EUG flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops (seasonal or thin)


United	SFO	EUG	1h 36m	76%	0.5%	994	Flying now

Best connections, any airlines

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.


Southwest + Alaskatwo ticketsDetails →	SFO 06:05 → LAX 07:35WN 2222	2h 30m Los Angeles	LAX 10:05 → EUG 12:18AS 2324 · flown by Horizon	6h 13m	100%	92%
Delta + Alaskatwo ticketsDetails →	SFO 14:30 → LAX 15:56DL 2725	3h 24m Los Angeles	LAX 19:20 → EUG 21:38AS 3323 · flown by SkyWest	7h 08m	98%	92%
Delta Details →	SFO 05:50 → SLC 08:42DL 1331	2h 03m Salt Lake City	SLC 10:45 → EUG 11:52DL 4135 · flown by SkyWest	6h 02m	99%	92%
Delta Details →	SFO 17:07 → SLC 20:02DL 1088	2h 53m Salt Lake City	SLC 22:55 → EUG 23:55DL 3721 · flown by SkyWest	6h 48m	97%	90%
Southwest + Americantwo ticketsDetails →	SFO 05:30 → PHX 07:30WN 4145	2h 51m Phoenix	PHX 10:21 → EUG 13:06AA 4114 · flown by Envoy	7h 36m	100%	90%
United + Deltatwo ticketsDetails →	SFO 08:40 → SLC 11:49UA 5605 · flown by SkyWest	3h 13m Salt Lake City	SLC 15:02 → EUG 16:02DL 4105 · flown by SkyWest	7h 22m	100%	89%
Delta Details →	SFO 10:35 → SEA 12:53DL 2870	2h 52m Seattle	SEA 15:45 → EUG 17:05DL 4124 · flown by SkyWest	6h 30m	98%	88%
Alaska Details →	SFO 17:38 → SEA 19:47AS 758	3h 02m Seattle	SEA 22:49 → EUG 23:59AS 2047 · flown by Horizon	6h 21m	98%	88%
Tight connection: often missed
Alaska Details →	SFO 16:30 → LAX 18:06AS 1523	1h 14m Los Angeles	LAX 19:20 → EUG 21:38AS 3323 · flown by SkyWest	5h 08m	75%	71%
Alaska Details →	SFO 16:24 → SAN 18:09AS 3337 · flown by SkyWest	1h 07m San Diego	SAN 19:16 → EUG 21:46AS 3319 · flown by SkyWest	5h 22m	67%	48%
Alaska Details →	SFO 12:27 → SEA 14:35AS 630	1h 15m Seattle	SEA 15:50 → EUG 17:00AS 2338 · flown by Horizon	4h 33m	50%	34%

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.

Afternoon and evening

SEA · 1h 09m · leaves 14:20 24%

LAX · 1h 14m · leaves 16:30 25%

SAN · 1h 07m · leaves 16:24 33%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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