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

No clear winner: Delta’s SLC → MSO flights land within a few points of 9 in 10 on time whatever the hour.

Nonstops


Delta	SLC	MSO	1h 36m	89%	0.9%	1,059	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. Layovers up to 4 hours. Pick a connection for the details.


United Details →	SLC 07:00 → DEN 08:42UA 1232	2h 33m Denver	DEN 11:15 → MSO 13:19UA 1342	6h 19m	99%	90%
United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	46m Denver	DEN 07:40 → MSO 09:55UA 4697 · flown by SkyWest	4h 40m	89%	89%
United Details →	SLC 08:30 → DEN 10:27UA 5642 · flown by SkyWest	3h 33m Denver	DEN 14:00 → MSO 16:20UA 4783 · flown by SkyWest	7h 50m	98%	84%
Delta Details →	SLC 08:00 → MSP 11:32DL 2916	1h 18m Minneapolis	MSP 12:50 → MSO 14:39DL 362	6h 39m	96%	82%
United Details →	SLC 16:42 → LAX 17:53UA 5456 · flown by SkyWest	2h 27m Los Angeles	LAX 20:20 → MSO 23:56UA 5370 · flown by SkyWest	7h 14m	100%	81%
Alaska Details →	SLC 09:10 → SEA 10:35AS 3381 · flown by SkyWest	3h 03m Seattle	SEA 13:38 → MSO 16:09AS 697	6h 59m	95%	78%
Alaska Details →	SLC 16:00 → SEA 17:16AS 734	3h 14m Seattle	SEA 20:30 → MSO 22:55AS 2154 · flown by Horizon	6h 55m	99%	75%
United Details →	SLC 14:28 → DEN 16:11UA 1662	3h 19m Denver	DEN 19:30 → MSO 21:39UA 1092	7h 11m	97%	75%
Tight connection: often missed
United Details →	SLC 08:30 → DEN 10:27UA 5642 · flown by SkyWest	48m Denver	DEN 11:15 → MSO 13:19UA 1342	4h 49m	64%	59%
United Details →	SLC 09:49 → SFO 11:13UA 5970 · flown by SkyWest	1h 02m San Francisco	SFO 12:15 → MSO 15:38UA 5422 · flown by SkyWest	5h 49m	37%	21%

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

MSP · 1h 18m · leaves 08:00 4%

DEN · 46m · leaves 05:15 11%

SFO · 1h 02m · leaves 09:49 63%

Afternoon and evening

MSP · 59m · leaves 17:21 18%

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 3738 SLC 07:45 → DEN United UA 1342 DEN 11:15 → MSO Connection details →	2h 00m	5h 34m	98%	90%
Frontier F9 3862 SLC 08:16 → DEN United UA 4783 DEN 14:00 → MSO Connection details →	3h 59m	8h 04m	99%	85%
Delta DL 841 SLC 15:40 → LAX United UA 5370 LAX 20:20 → MSO Connection details →	3h 44m	8h 16m	99%	80%

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