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 FCA → PDX flights land within a few points of 88% on time whatever the hour.

Nonstops (seasonal or thin)


Alaska	FCA	PDX	1h 39m	88%	0.9%	346	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Alaska Details →	FCA 06:33 → SEA 07:05AS 2122 · flown by Horizon	3h 09m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	5h 48m	97%	93%
Delta Details →	FCA 18:10 → SLC 20:00DL 3798 · flown by SkyWest	2h 50m Salt Lake City	SLC 22:50 → PDX 23:44DL 1373	6h 35m	99%	87%
Alaska + Deltatwo ticketsDetails →	FCA 11:28 → SEA 12:05AS 2207 · flown by Horizon	3h 56m Seattle	SEA 16:01 → PDX 17:09DL 3918 · flown by SkyWest	6h 41m	100%	85%
Alaska + Deltatwo ticketsDetails →	FCA 16:34 → SEA 17:12AS 2110 · flown by Horizon	3h 47m Seattle	SEA 20:59 → PDX 22:02DL 3913 · flown by SkyWest	6h 28m	100%	85%
Alaska Details →	FCA 14:10 → SAN 16:16AS 2187 · flown by Horizon	1h 42m San Diego	SAN 17:58 → PDX 20:31AS 1392	7h 21m	100%	83%
Delta Details →	FCA 12:22 → SLC 14:09DL 2813	3h 16m Salt Lake City	SLC 17:25 → PDX 18:18DL 1238	6h 56m	100%	82%
United + Frontiertwo ticketsDetails →	FCA 10:42 → DEN 13:06UA 5991 · flown by SkyWest	2h 02m Denver	DEN 15:08 → PDX 16:51F9 2553	7h 11m	93%	81%
United + Deltatwo ticketsDetails →	FCA 13:20 → LAX 15:23UA 5427 · flown by SkyWest	1h 38m Los Angeles	LAX 17:01 → PDX 19:17DL 2459	6h 57m	86%	73%
Tight connection: often missed
United Details →	FCA 16:11 → SFO 17:50UA 5936 · flown by SkyWest	1h 06m San Francisco	SFO 18:56 → PDX 20:54UA 2262	5h 43m	61%	49%
Alaska Details →	FCA 16:34 → SEA 17:12AS 2110 · flown by Horizon	47m Seattle	SEA 17:59 → PDX 18:56AS 2302 · flown by Horizon	3h 22m	62%	47%

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.

Afternoon and evening

SEA · 47m · leaves 16:34 38%

SFO · 1h 06m · leaves 16:11 39%

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