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

Connect in the morning. The same one-hour layover misses 3% of the time at 11 am and 23% of the time at 8 pm.

Nonstops (seasonal or thin)


United	SFO	FCA	2h 30m	75%	0.8%	251	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	SFO 05:50 → SLC 08:42DL 1331	2h 08m Salt Lake City	SLC 10:50 → FCA 12:47DL 3804 · flown by SkyWest	5h 57m	99%	94%
Alaska Details →	SFO 07:20 → PDX 09:02AS 1410	2h 04m Portland	PDX 11:06 → FCA 13:30AS 2044 · flown by Horizon	5h 10m	97%	88%
Delta Details →	SFO 09:55 → SLC 12:44DL 920	2h 57m Salt Lake City	SLC 15:41 → FCA 17:30DL 3798 · flown by SkyWest	6h 35m	97%	86%
United Details →	SFO 06:00 → LAX 07:39UA 2127	49m Los Angeles	LAX 08:28 → FCA 12:27UA 5728 · flown by SkyWest	5h 27m	93%	85%
United Details →	SFO 05:00 → DEN 08:35UA 1479	2h 40m Denver	DEN 11:15 → FCA 13:30UA 1547	7h 30m	99%	81%
Alaska Details →	SFO 15:50 → SEA 18:00AS 1340	3h 35m Seattle	SEA 21:35 → FCA 23:59AS 2121 · flown by Horizon	7h 09m	100%	77%
United Details →	SFO 08:31 → DEN 12:22UA 2348	1h 31m Denver	DEN 13:53 → FCA 16:11UA 2246	6h 40m	96%	75%
United Details →	SFO 12:43 → DEN 16:35UA 540	2h 55m Denver	DEN 19:30 → FCA 21:47UA 696	8h 04m	96%	74%
Tight connection: often missed
Alaska Details →	SFO 10:18 → SEA 12:27AS 656	1h 06m Seattle	SEA 13:33 → FCA 15:54AS 2105 · flown by Horizon	4h 36m	60%	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.

Morning

DFW · 1h 09m · leaves 05:29 3%

SLC · 58m · leaves 05:50 4%

MSP · 1h 00m · leaves 06:00 6%

Afternoon and evening

DEN · 1h 19m · leaves 14:20 16%

SLC · 1h 08m · leaves 17:07 23%

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.


United UA 5605 SFO 08:40 → SLC Delta DL 3798 SLC 15:41 → FCA Connection details →	3h 52m	7h 50m	100%	90%
Southwest WN 1424 SFO 05:10 → DEN United UA 1547 DEN 11:15 → FCA Connection details →	2h 35m	7h 20m	98%	81%
Frontier F9 1094 SFO 12:38 → DEN United UA 696 DEN 19:30 → FCA Connection details →	3h 05m	8h 09m	94%	73%

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