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 15% of the time at 7 am and barely half the time at 8 pm.

Nonstops (seasonal or thin)


Alaska	MFR	SAN	2h 13m	81%	0.0%	363	Flying now
Allegiant	MFR	SAN	–	67%few flights	0.0%	3	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	MFR 05:20 → SLC 08:18DL 3769 · flown by SkyWest	2h 57m Salt Lake City	SLC 11:15 → SAN 12:17DL 1296	6h 57m	99%	81%
Delta Details →	MFR 06:01 → SEA 07:40DL 3781 · flown by SkyWest	2h 05m Seattle	SEA 09:45 → SAN 12:38DL 2533	6h 37m	100%	81%
United Details →	MFR 05:00 → DEN 08:33UA 2185	2h 42m Denver	DEN 11:15 → SAN 12:41UA 1940	7h 41m	97%	79%
Delta Details →	MFR 12:25 → SEA 14:05DL 3878 · flown by SkyWest	1h 20m Seattle	SEA 15:25 → SAN 18:13DL 2613	5h 48m	89%	74%
Alaska Details →	MFR 05:15 → PDX 06:14AS 2098 · flown by Horizon	1h 18m Portland	PDX 07:32 → SAN 10:05AS 577	4h 50m	97%	74%
Alaska Details →	MFR 12:30 → PDX 13:34AS 3300 · flown by SkyWest	1h 21m Portland	PDX 14:55 → SAN 17:29AS 1312	4h 59m	96%	73%
United Details →	MFR 06:00 → SFO 07:24UA 717	51m San Francisco	SFO 08:15 → SAN 09:59UA 444	3h 59m	85%	69%
United Details →	MFR 18:35 → SFO 20:07UA 5883 · flown by SkyWest	2h 35m San Francisco	SFO 22:42 → SAN 00:31 +1UA 2142	5h 56m	93%	67%
Tight connection: often missed
United Details →	MFR 14:11 → SFO 15:35UA 1754	1h 12m San Francisco	SFO 16:47 → SAN 18:39UA 1561	4h 28m	64%	38%
United Details →	MFR 18:35 → SFO 20:07UA 5883 · flown by SkyWest	53m San Francisco	SFO 21:00 → SAN 22:49UA 1863	4h 14m	48%	37%

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 18m · leaves 05:15 3%

SFO · 51m · leaves 06:00 15%

Afternoon and evening

PHX · 1h 15m · leaves 13:23 17%

PDX · 50m · leaves 15:52 20%

SFO · 53m · leaves 18:35 52%

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 2114 MFR 10:31 → SEA Delta DL 2613 SEA 15:25 → SAN Connection details →	3h 32m	7h 42m	100%	80%
Alaska AS 2452 MFR 05:58 → SEA Delta DL 2533 SEA 09:45 → SAN Connection details →	2h 25m	6h 40m	100%	78%
United UA 2185 MFR 05:00 → DEN Southwest WN 1700 DEN 10:32 → SAN Connection details →	1h 59m	6h 57m	94%	75%

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