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

No nonstop, and no clear pattern: the best connection reaches San Diego on time 85% of the time.

Nonstops (seasonal or thin)


Alaska	MSO	SAN	2h 52m	56%few flights	0.0%	25	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


United Details →	MSO 10:36 → DEN 12:48UA 5484 · flown by SkyWest	3h 07m Denver	DEN 15:55 → SAN 17:20UA 1281	7h 44m	100%	85%
American + Deltatwo ticketsDetails →	MSO 16:44 → LAX 18:40AA 6270 · flown by SkyWest	4h 00m Los Angeles	LAX 22:40 → SAN 23:40DL 3746 · flown by SkyWest	7h 56m	97%	84%
Alaska + Deltatwo ticketsDetails →	MSO 11:22 → SEA 12:02AS 3100 · flown by SkyWest	3h 23m Seattle	SEA 15:25 → SAN 18:13DL 2613	7h 51m	100%	83%
United Details →	MSO 06:05 → DEN 08:11UA 1026	3h 04m Denver	DEN 11:15 → SAN 12:41UA 1940	7h 36m	99%	82%
Alaska + Deltatwo ticketsDetails →	MSO 07:00 → SEA 07:32AS 2153 · flown by Horizon	2h 13m Seattle	SEA 09:45 → SAN 12:38DL 2533	6h 38m	100%	82%
Delta Details →	MSO 18:29 → SLC 20:15DL 3808 · flown by SkyWest	2h 40m Salt Lake City	SLC 22:55 → SAN 23:50DL 1202	6h 24m	99%	82%
Delta Details →	MSO 13:17 → SLC 15:00DL 4112 · flown by SkyWest	2h 10m Salt Lake City	SLC 17:10 → SAN 18:06DL 1252	5h 49m	99%	81%
Delta Details →	MSO 05:55 → MSP 09:30DL 2907	2h 08m Minneapolis	MSP 11:38 → SAN 13:29DL 2125	8h 34m	99%	80%
Tight connection: often missed
United Details →	MSO 16:19 → SFO 17:50UA 5417 · flown by SkyWest	1h 10m San Francisco	SFO 19:00 → SAN 20:53UA 1343	5h 34m	59%	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.

Afternoon and evening

ORD · 1h 02m · leaves 13:15 18%

SFO · 1h 10m · leaves 16:19 41%

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