Sun, Oct 4 has passed, so this is the 12-month record.

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 88% on time.

Nonstops (seasonal or thin)


Alaska	SNA	BOI	2h 10m	92%	0.8%	365	Flying now
Allegiant	SNA	BOI	2h 06m	79%	1.3%	153	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 Santa Ana). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	SNA 07:00 → PDX 09:24AS 750	1h 06m Portland	PDX 10:30 → BOI 12:49AS 2089 · flown by Horizon	4h 49m	98%	93%
Alaska Details →	SNA 10:28 → SEA 13:17AS 471	2h 28m Seattle	SEA 15:45 → BOI 18:11AS 2061 · flown by Horizon	6h 43m	100%	90%
American Details →	SNA 06:46 → PHX 08:19AA 628	1h 51m Phoenix	PHX 10:10 → BOI 13:27AA 4948 · flown by SkyWest	5h 41m	96%	89%
Delta Details →	SNA 07:00 → SEA 10:05DL 3695 · flown by SkyWest	2h 25m Seattle	SEA 12:30 → BOI 15:12DL 3959 · flown by SkyWest	7h 12m	98%	86%
Delta Details →	SNA 14:05 → SEA 17:00DL 952	2h 50m Seattle	SEA 19:50 → BOI 22:28DL 3692 · flown by SkyWest	7h 23m	98%	85%
Delta Details →	SNA 11:20 → SEA 14:24DL 3966 · flown by SkyWest	2h 11m Seattle	SEA 16:35 → BOI 19:13DL 3688 · flown by SkyWest	6h 51m	98%	84%
Alaska Details →	SNA 10:57 → PDX 13:21AS 1405	1h 37m Portland	PDX 14:58 → BOI 17:16AS 342	5h 19m	97%	84%
Delta Details →	SNA 09:50 → SLC 12:47DL 1198	3h 48m Salt Lake City	SLC 16:35 → BOI 17:51DL 2920	7h 02m	99%	84%
Tight connection: often missed
Delta Details →	SNA 17:03 → SLC 19:59DL 1277	47m Salt Lake City	SLC 20:46 → BOI 22:04DL 4446 · flown by SkyWest	4h 02m	73%	64%
United Details →	SNA 16:12 → SFO 17:50UA 5351 · flown by SkyWest	55m San Francisco	SFO 18:45 → BOI 21:40UA 5644 · flown by SkyWest	4h 28m	63%	48%
United Details →	SNA 18:20 → SFO 19:51UA 2657	1h 08m San Francisco	SFO 20:59 → BOI 23:55UA 6027 · flown by SkyWest	4h 35m	51%	31%

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 06m · leaves 07:00 2%

DEN · 1h 19m · leaves 06:45 3%

Afternoon and evening

SEA · 1h 06m · leaves 17:13 16%

SLC · 47m · leaves 17:03 27%

SFO · 1h 08m · leaves 18:20 49%

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 3868 SNA 08:50 → SMF Alaska AS 2157 SMF 13:10 → BOI Connection details →	2h 55m	5h 45m	100%	91%
Alaska AS 1325 SNA 06:47 → SEA Delta DL 3959 SEA 12:30 → BOI Connection details →	2h 48m	7h 25m	100%	87%
Alaska AS 471 SNA 10:28 → SEA Delta DL 3688 SEA 16:35 → BOI Connection details →	3h 18m	7h 43m	100%	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