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 86% on time.

Nonstops


Delta	SEA	MFR	1h 34m	89%	0.8%	1,059	Flying now
Alaska	SEA	MFR	1h 26m	84%	2.3%	1,242	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	SEA 06:42 → PDX 07:37AS 2432 · flown by Horizon	3h 03m Portland	PDX 10:40 → MFR 11:53AS 3300 · flown by SkyWest	5h 11m	100%	91%
Delta Details →	SEA 17:59 → SLC 21:09DL 1165	1h 50m Salt Lake City	SLC 22:59 → MFR 23:54DL 3722 · flown by SkyWest	5h 55m	94%	88%
Delta Details →	SEA 05:30 → SLC 08:30DL 1128	2h 15m Salt Lake City	SLC 10:45 → MFR 11:43DL 3806 · flown by SkyWest	6h 15m	98%	87%
Alaska Details →	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	3h 31m Portland	PDX 14:52 → MFR 15:54AS 2125 · flown by Horizon	5h 40m	100%	83%
Alaska Details →	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	2h 57m Portland	PDX 17:45 → MFR 18:48AS 2163 · flown by Horizon	5h 03m	98%	83%
American Details →	SEA 06:16 → PHX 09:18AA 3792 · flown by Envoy	53m Phoenix	PHX 10:11 → MFR 12:50AA 6253 · flown by SkyWest	6h 34m	91%	80%
United Details →	SEA 05:15 → SFO 07:35UA 5676 · flown by SkyWest	3h 02m San Francisco	SFO 10:37 → MFR 12:04UA 2322	6h 49m	99%	79%
Alaska Details →	SEA 17:59 → PDX 18:56AS 2302 · flown by Horizon	3h 08m Portland	PDX 22:04 → MFR 23:06AS 2266 · flown by Horizon	5h 07m	98%	78%
Tight connection: often missed
Alaska Details →	SEA 08:45 → PDX 09:49AS 3132 · flown by SkyWest	51m Portland	PDX 10:40 → MFR 11:53AS 3300 · flown by SkyWest	3h 08m	60%	56%
Alaska Details →	SEA 15:55 → PDX 16:55AS 686	50m Portland	PDX 17:45 → MFR 18:48AS 2163 · flown by Horizon	2h 53m	62%	52%
United Details →	SEA 07:00 → SFO 09:18UA 1578	1h 19m San Francisco	SFO 10:37 → MFR 12:04UA 2322	5h 04m	48%	38%

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

PHX · 53m · leaves 06:16 9%

PDX · 51m · leaves 08:45 40%

Afternoon and evening

LAX · 1h 13m · leaves 15:59 13%

PDX · 50m · leaves 15:55 38%

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 3300 PDX 10:40 → MFR Connection details →	2h 01m	4h 23m	97%	89%
Delta DL 4062 SEA 13:35 → PDX Alaska AS 2163 PDX 17:45 → MFR Connection details →	2h 59m	5h 13m	98%	83%
Delta DL 3802 SEA 10:35 → PDX Alaska AS 2125 PDX 14:52 → MFR Connection details →	3h 10m	5h 19m	97%	82%

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