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 EUG → SFO flights land within a few points of 68% on time whatever the hour.

Nonstops (seasonal or thin)


United	EUG	SFO	1h 38m	68%	1.0%	994	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Southwest + Unitedtwo ticketsDetails →	EUG 10:15 → SAN 12:40WN 1838	3h 29m San Diego	SAN 16:09 → SFO 17:49UA 2117	7h 34m	100%	76%
Alaska + Unitedtwo ticketsDetails →	EUG 12:55 → LAX 15:11AS 2323 · flown by Horizon	1h 59m Los Angeles	LAX 17:10 → SFO 18:38UA 233	5h 43m	88%	73%
Alaska + Unitedtwo ticketsDetails →	EUG 07:50 → SAN 10:24AS 3217 · flown by SkyWest	3h 15m San Diego	SAN 13:39 → SFO 15:19UA 1763	7h 29m	98%	72%
Alaska + Unitedtwo ticketsDetails →	EUG 06:00 → SEA 07:08AS 2046 · flown by Horizon	3h 21m Seattle	SEA 10:29 → SFO 12:47UA 1482	6h 47m	100%	70%
Alaska + Deltatwo ticketsDetails →	EUG 09:45 → SEA 10:53AS 2073 · flown by Horizon	3h 37m Seattle	SEA 14:30 → SFO 16:50DL 3707 · flown by SkyWest	7h 05m	100%	70%
Delta Details →	EUG 17:45 → SEA 19:05DL 4124 · flown by SkyWest	2h 40m Seattle	SEA 21:45 → SFO 00:06 +1DL 2635	6h 21m	99%	70%
Alaska Details →	EUG 12:34 → PDX 13:26AS 3062 · flown by SkyWest	1h 23m Portland	PDX 14:49 → SFO 16:40AS 236	4h 06m	93%	68%
Southwest + Unitedtwo ticketsDetails →	EUG 06:10 → DEN 09:40WN 1828	1h 41m Denver	DEN 11:21 → SFO 13:04UA 1561	6h 54m	94%	67%
Tight connection: often missed
Alaska Details →	EUG 09:45 → SEA 10:53AS 2073 · flown by Horizon	49m Seattle	SEA 11:42 → SFO 14:04AS 655	4h 19m	37%	26%
Southwest Details →	EUG 16:55 → LAS 18:55WN 4267	1h 10m Las Vegas	LAS 20:05 → SFO 21:35WN 4397	4h 40m	38%	6%
Alaska Details →	EUG 17:43 → SEA 18:52AS 2339 · flown by Horizon	50m Seattle	SEA 19:42 → SFO 21:54AS 628	4h 11m	49%	6%

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 13m · leaves 05:20 2%

DEN · 1h 06m · leaves 05:00 5%

Afternoon and evening

LAX · 1h 14m · leaves 12:55 12%

DEN · 1h 11m · leaves 13:07 18%

PHX · 52m · leaves 13:39 22%

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