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 6% of the time at 8 am and 22% of the time at 7 pm.

Nonstops


Alaska	BOI	SAN	2h 23m	80%	0.7%	724	Flying now
Southwest	BOI	SAN	2h 12m	76%	0.3%	391	Flying now

Best connections, one ticket

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 Boise). Layovers up to 4 hours. Pick a connection for the details.


United Details →	BOI 10:20 → DEN 12:27UA 6041 · flown by SkyWest	3h 28m Denver	DEN 15:55 → SAN 17:20UA 1281	8h 00m	99%	84%
Delta Details →	BOI 13:05 → SLC 14:21DL 1442	2h 49m Salt Lake City	SLC 17:10 → SAN 18:06DL 1252	6h 01m	100%	84%
Delta Details →	BOI 11:55 → SEA 12:42DL 3678 · flown by SkyWest	2h 43m Seattle	SEA 15:25 → SAN 18:13DL 2613	7h 18m	99%	83%
Delta Details →	BOI 06:43 → SEA 07:35DL 3775 · flown by SkyWest	2h 10m Seattle	SEA 09:45 → SAN 12:38DL 2533	6h 55m	100%	81%
Delta Details →	BOI 08:25 → SLC 09:44DL 3607 · flown by SkyWest	1h 31m Salt Lake City	SLC 11:15 → SAN 12:17DL 1296	4h 52m	98%	81%
United Details →	BOI 06:30 → DEN 08:29UA 1782	2h 46m Denver	DEN 11:15 → SAN 12:41UA 1940	7h 11m	98%	80%
Delta Details →	BOI 18:42 → SLC 19:57DL 2920	2h 58m Salt Lake City	SLC 22:55 → SAN 23:50DL 1202	6h 11m	98%	80%
Southwest Details →	BOI 07:20 → DEN 09:10WN 698	1h 22m Denver	DEN 10:32 → SAN 12:00WN 1700	5h 37m	98%	78%
Tight connection: often missed
United Details →	BOI 10:35 → SFO 11:35UA 4733 · flown by SkyWest	46m San Francisco	SFO 12:21 → SAN 14:08UA 1257	4h 33m	49%	33%
Alaska Details →	BOI 16:27 → SEA 17:06AS 740	47m Seattle	SEA 17:53 → SAN 20:49AS 1388	5h 22m	39%	18%
Alaska Details →	BOI 10:00 → SEA 10:34AS 2166 · flown by Horizon	52m Seattle	SEA 11:26 → SAN 14:18AS 1346	5h 18m	23%	12%

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

PDX · 1h 15m · leaves 05:57 4%

SMF · 1h 02m · leaves 07:04 6%

PHX · 1h 00m · leaves 08:11 8%

Afternoon and evening

PHX · 50m · leaves 17:55 62%

SFO · 1h 02m · leaves 19:05 75%

DEN · 55m · leaves 16:25 76%

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.


Alaska AS 2180 BOI 18:51 → LAX Delta DL 3746 LAX 22:40 → SAN Connection details →	2h 30m	5h 49m	100%	86%
Southwest WN 699 BOI 10:25 → DEN United UA 1281 DEN 15:55 → SAN Connection details →	3h 35m	7h 55m	98%	84%
Alaska AS 2159 BOI 11:42 → SEA Delta DL 2613 SEA 15:25 → SAN Connection details →	3h 09m	7h 31m	100%	83%

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