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

No clear winner: Alaska’s MFR → PDX flights land within a few points of 9 in 10 on time whatever the hour.

Nonstops


Alaska	MFR	PDX	1h 02m	90%	2.0%	1,265	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	MFR 05:58 → SEA 07:20AS 2452 · flown by Horizon	2h 54m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	5h 23m	100%	92%
Delta Details →	MFR 06:01 → SEA 07:40DL 3781 · flown by SkyWest	1h 50m Seattle	SEA 09:30 → PDX 10:39DL 3818 · flown by SkyWest	4h 38m	100%	89%
Delta Details →	MFR 05:20 → SLC 08:18DL 3769 · flown by SkyWest	2h 57m Salt Lake City	SLC 11:15 → PDX 12:10DL 1209	6h 50m	99%	86%
Alaska Details →	MFR 16:34 → LAX 18:35AS 2329 · flown by Horizon	3h 00m Los Angeles	LAX 21:35 → PDX 23:56AS 207	7h 22m	98%	86%
United Details →	MFR 06:00 → SFO 07:24UA 717	58m San Francisco	SFO 08:22 → PDX 10:20UA 2265	4h 20m	91%	83%
Delta Details →	MFR 17:25 → SEA 19:04DL 3770 · flown by SkyWest	1h 55m Seattle	SEA 20:59 → PDX 22:02DL 3913 · flown by SkyWest	4h 37m	98%	82%
Delta Details →	MFR 12:25 → SEA 14:05DL 3878 · flown by SkyWest	1h 56m Seattle	SEA 16:01 → PDX 17:09DL 3918 · flown by SkyWest	4h 44m	97%	82%
Alaska Details →	MFR 10:31 → SEA 11:53AS 2114 · flown by Horizon	1h 52m Seattle	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	4h 17m	96%	81%

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

SFO · 58m · leaves 06:00 9%

Afternoon and evening

SEA · 1h 17m · leaves 19:50 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 3781 MFR 06:01 → SEA Alaska AS 3090 SEA 10:14 → PDX Connection details →	2h 34m	5h 20m	100%	95%
Delta DL 3769 MFR 05:20 → SLC Alaska AS 2333 SLC 11:22 → PDX Connection details →	3h 04m	7h 03m	98%	88%
Alaska AS 2452 MFR 05:58 → SEA Delta DL 3818 SEA 09:30 → PDX Connection details →	2h 10m	4h 41m	99%	86%

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