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 14% of the time at 11 am and 35% of the time at 6 pm.

Nonstops


United	SFO	BOI	1h 50m	77%	0.3%	1,465	Flying now
Alaska	SFO	BOI	1h 38m	75%	0.3%	359	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Alaska Details →	SFO 07:20 → PDX 09:02AS 1410	1h 28m Portland	PDX 10:30 → BOI 12:49AS 2089 · flown by Horizon	4h 29m	97%	92%
American Details →	SFO 05:50 → PHX 08:01AA 6404 · flown by SkyWest	2h 09m Phoenix	PHX 10:10 → BOI 13:27AA 4948 · flown by SkyWest	6h 37m	99%	92%
Southwest Details →	SFO 05:00 → LAS 06:35WN 4231	2h 00m Las Vegas	LAS 08:35 → BOI 11:25WN 2192	5h 25m	100%	91%
Delta Details →	SFO 05:50 → SLC 08:42DL 1331	2h 18m Salt Lake City	SLC 11:00 → BOI 12:15DL 1442	5h 27m	99%	91%
United Details →	SFO 13:55 → LAX 15:35UA 2610	3h 22m Los Angeles	LAX 18:57 → BOI 22:05UA 5363 · flown by SkyWest	7h 10m	100%	89%
Southwest Details →	SFO 05:30 → PHX 07:30WN 4145	1h 10m Phoenix	PHX 08:40 → BOI 11:45WN 4601	5h 15m	94%	88%
Delta Details →	SFO 07:00 → LAX 08:30DL 1598	3h 14m Los Angeles	LAX 11:44 → BOI 14:46DL 3773 · flown by SkyWest	6h 51m	99%	88%
Alaska Details →	SFO 14:20 → SEA 16:31AS 790	3h 28m Seattle	SEA 19:59 → BOI 22:24AS 2034 · flown by Horizon	7h 04m	100%	86%
Tight connection: often missed
Alaska Details →	SFO 07:55 → SAN 09:35AS 1557	55m San Diego	SAN 10:30 → BOI 13:46AS 2341 · flown by Horizon	4h 51m	69%	49%
Alaska Details →	SFO 12:27 → SEA 14:35AS 630	1h 10m Seattle	SEA 15:45 → BOI 18:11AS 2061 · flown by Horizon	4h 44m	42%	38%
Alaska Details →	SFO 12:29 → GEG 14:36AS 3075 · flown by SkyWest	1h 29m Spokane	GEG 16:05 → BOI 18:13AS 2264 · flown by Horizon	4h 44m	30%	22%

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

PHX · 1h 10m · leaves 05:30 6%

LAX · 51m · leaves 09:20 14%

SAN · 55m · leaves 07:55 31%

Afternoon and evening

PDX · 59m · leaves 18:46 18%

SEA · 1h 09m · leaves 14:20 24%

LAX · 52m · leaves 16:25 35%

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 4145 SFO 05:30 → PHX American AA 4948 PHX 10:10 → BOI Connection details →	2h 40m	6h 57m	98%	91%
United UA 1301 SFO 10:15 → PDX Alaska AS 342 PDX 14:58 → BOI Connection details →	2h 50m	6h 01m	100%	87%
Alaska AS 68 SFO 07:03 → SEA Delta DL 3959 SEA 12:30 → BOI Connection details →	3h 17m	7h 09m	99%	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