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

No clear winner: airlines and hours on this route all land within a few points of 2 in 3 on time.

Nonstops (seasonal or thin)


United	BZN	SFO	2h 33m	71%	0.0%	378	Flying now
Alaska	BZN	SFO	2h 34m	42%	3.7%	81	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	BZN 10:33 → DEN 12:25UA 1824	3h 22m Denver	DEN 15:47 → SFO 17:30UA 2633	7h 57m	99%	72%
United Details →	BZN 06:30 → DEN 08:24UA 1362	2h 57m Denver	DEN 11:21 → SFO 13:04UA 1561	7h 34m	99%	71%
Delta Details →	BZN 06:00 → MSP 09:18DL 1678	1h 42m Minneapolis	MSP 11:00 → SFO 13:10DL 2074	8h 10m	98%	67%
Alaska Details →	BZN 10:26 → SEA 11:23AS 2141 · flown by Horizon	1h 57m Seattle	SEA 13:20 → SFO 15:31AS 680	6h 05m	98%	66%
Delta Details →	BZN 05:15 → SLC 06:36DL 491	1h 14m Salt Lake City	SLC 07:50 → SFO 08:51DL 920	4h 41m	97%	64%
Delta Details →	BZN 19:30 → SLC 20:55DL 3676 · flown by SkyWest	1h 55m Salt Lake City	SLC 22:50 → SFO 23:52DL 1091	5h 26m	96%	63%
Delta Details →	BZN 12:13 → SLC 13:39DL 1971	1h 31m Salt Lake City	SLC 15:10 → SFO 16:12DL 1088	5h 02m	96%	62%
United Details →	BZN 14:26 → DEN 16:20UA 2258	1h 34m Denver	DEN 17:54 → SFO 19:40UA 1007	6h 14m	92%	62%
Tight connection: often missed
United Details →	BZN 17:51 → DEN 19:58UA 5736 · flown by SkyWest	1h 12m Denver	DEN 21:10 → SFO 22:56UA 2123	6h 05m	74%	44%
Delta Details →	BZN 15:56 → SEA 17:00DL 4174 · flown by SkyWest	52m Seattle	SEA 17:52 → SFO 20:19DL 3991 · flown by SkyWest	5h 23m	64%	41%
Alaska Details →	BZN 16:04 → PDX 16:50AS 2021 · flown by Horizon	46m Portland	PDX 17:36 → SFO 19:30AS 504	4h 26m	71%	41%

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

DEN · 1h 19m · leaves 06:30 3%

SLC · 1h 14m · leaves 05:15 3%

LAS · 55m · leaves 10:15 12%

Afternoon and evening

PDX · 46m · leaves 16:04 29%

LAS · 1h 20m · leaves 19:15 32%

SEA · 52m · leaves 15:56 36%

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 741 BZN 17:26 → LAX American AA 6510 LAX 22:32 → SFO Connection details →	3h 25m	7h 33m	97%	79%
Southwest WN 1131 BZN 11:15 → DEN United UA 2633 DEN 15:47 → SFO Connection details →	2h 52m	7h 15m	100%	73%
Southwest WN 1130 BZN 06:35 → DEN United UA 1561 DEN 11:21 → SFO Connection details →	3h 11m	7h 29m	100%	72%

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