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 RDM → DEN flights land within a few points of 86% on time whatever the hour.

Nonstops (seasonal or thin)


United	RDM	DEN	2h 28m	86%	0.8%	727	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Denver on time. Total trip = scheduled departure to arrival, layover included (Denver is 1 h ahead of Redmond). Layovers up to 4 hours. Pick a connection for the details.


Alaska + Unitedtwo ticketsDetails →	RDM 05:25 → PDX 06:15AS 2043 · flown by Horizon	2h 35m Portland	PDX 08:50 → DEN 12:24UA 2375	5h 59m	99%	95%
United Details →	RDM 07:00 → LAX 09:23UA 5482 · flown by SkyWest	3h 23m Los Angeles	LAX 12:46 → DEN 16:16UA 360	8h 16m	99%	88%
Alaska + Unitedtwo ticketsDetails →	RDM 16:00 → PDX 16:50AS 2167 · flown by Horizon	2h 00m Portland	PDX 18:50 → DEN 22:29UA 2334	5h 29m	96%	86%
United Details →	RDM 13:49 → SFO 15:32UA 2262	3h 24m San Francisco	SFO 18:56 → DEN 22:44UA 2436	7h 55m	97%	86%
Alaska + Unitedtwo ticketsDetails →	RDM 12:34 → PDX 13:35AS 3074 · flown by SkyWest	2h 40m Portland	PDX 16:15 → DEN 19:51UA 1787	6h 17m	100%	85%
Alaska + Unitedtwo ticketsDetails →	RDM 06:00 → SEA 07:14AS 3026 · flown by SkyWest	3h 48m Seattle	SEA 11:02 → DEN 14:51UA 757	7h 51m	98%	85%
Alaska + Unitedtwo ticketsDetails →	RDM 13:05 → SAN 15:25AS 2415 · flown by Horizon	3h 30m San Diego	SAN 18:55 → DEN 22:27UA 519	8h 22m	97%	83%
Alaska + Unitedtwo ticketsDetails →	RDM 07:28 → SAN 09:50AS 2224 · flown by Horizon	2h 43m San Diego	SAN 12:33 → DEN 16:06UA 1565	7h 38m	100%	83%
Tight connection: often missed
Alaska Details →	RDM 06:00 → SEA 07:14AS 3026 · flown by SkyWest	50m Seattle	SEA 08:04 → DEN 11:56AS 375	4h 56m	55%	48%
Alaska Details →	RDM 09:44 → SEA 10:57AS 2076 · flown by Horizon	47m Seattle	SEA 11:44 → DEN 15:38AS 535	4h 54m	42%	32%

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 05m · leaves 05:25 4%

SFO · 58m · leaves 05:55 7%

SEA · 50m · leaves 06:00 45%

Afternoon and evening

PDX · 1h 14m · leaves 16:00 4%

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