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

Take the nonstop: Alaska PDX → MSO (1h 31m) reaches Missoula on time 87% of the time; the most reliable connection, Alaska via Seattle (4h 25m), 75%.

Nonstops (seasonal or thin)


Alaska	PDX	MSO	1h 31m	87%	0.4%	515	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	PDX 05:45 → SLC 08:39DL 1270	2h 14m Salt Lake City	SLC 10:53 → MSO 12:37DL 4112 · flown by SkyWest	5h 52m	100%	93%
United Details →	PDX 05:00 → DEN 08:31UA 459	2h 44m Denver	DEN 11:15 → MSO 13:19UA 1342	7h 19m	99%	91%
Delta Details →	PDX 09:45 → SLC 12:35DL 1203	3h 35m Salt Lake City	SLC 16:10 → MSO 17:49DL 3808 · flown by SkyWest	7h 04m	100%	88%
Alaska Details →	PDX 05:00 → SEA 05:53AS 2431 · flown by Horizon	2h 12m Seattle	SEA 08:05 → MSO 10:42AS 3101 · flown by SkyWest	4h 42m	100%	87%
United Details →	PDX 08:50 → DEN 12:24UA 2375	1h 36m Denver	DEN 14:00 → MSO 16:20UA 4783 · flown by SkyWest	6h 30m	98%	84%
Delta Details →	PDX 17:24 → SLC 20:19DL 1244	2h 36m Salt Lake City	SLC 22:55 → MSO 00:28 +1DL 1723	6h 04m	99%	82%
Alaska Details →	PDX 10:35 → SEA 11:43AS 3431 · flown by SkyWest	1h 55m Seattle	SEA 13:38 → MSO 16:09AS 697	4h 34m	98%	80%
Alaska Details →	PDX 17:30 → SEA 18:33AS 430	1h 57m Seattle	SEA 20:30 → MSO 22:55AS 2154 · flown by Horizon	4h 25m	98%	75%
Tight connection: often missed
Alaska Details →	PDX 06:19 → SEA 07:17AS 499	48m Seattle	SEA 08:05 → MSO 10:42AS 3101 · flown by SkyWest	3h 23m	73%	64%

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

SEA · 48m · leaves 06:19 27%

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.


Southwest WN 3195 PDX 05:50 → DEN United UA 1342 DEN 11:15 → MSO Connection details →	2h 00m	6h 29m	96%	89%
Southwest WN 3693 PDX 08:35 → DEN United UA 4783 DEN 14:00 → MSO Connection details →	2h 00m	6h 45m	100%	86%
Alaska AS 3112 PDX 10:55 → SLC Delta DL 3808 SLC 16:10 → MSO Connection details →	2h 11m	5h 54m	94%	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