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 4 in 5 on time.

Nonstops


American	PHX	BOI	2h 17m	83%	0.3%	1,038	Flying now
Alaska	PHX	BOI	2h 17m	82%	0.6%	487	Flying now
Southwest	PHX	BOI	2h 05m	78%	0.4%	813	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 Phoenix). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	PHX 06:00 → SLC 08:40DL 1535	2h 20m Salt Lake City	SLC 11:00 → BOI 12:15DL 1442	5h 17m	99%	91%
Southwest Details →	PHX 05:45 → LAS 06:50WN 3281	1h 45m Las Vegas	LAS 08:35 → BOI 11:25WN 2192	4h 40m	100%	89%
Delta Details →	PHX 06:59 → SEA 10:05DL 1570	2h 25m Seattle	SEA 12:30 → BOI 15:12DL 3959 · flown by SkyWest	7h 13m	100%	88%
Alaska Details →	PHX 14:37 → SEA 17:43AS 425	2h 16m Seattle	SEA 19:59 → BOI 22:24AS 2034 · flown by Horizon	6h 47m	100%	86%
Delta Details →	PHX 09:20 → SEA 12:35DL 2374	2h 19m Seattle	SEA 14:54 → BOI 17:30DL 4127 · flown by SkyWest	7h 10m	99%	86%
Delta Details →	PHX 16:02 → LAX 17:34DL 3894 · flown by SkyWest	2h 25m Los Angeles	LAX 19:59 → BOI 23:04DL 4148 · flown by SkyWest	6h 02m	98%	85%
United Details →	PHX 15:50 → LAX 17:27UA 5718 · flown by SkyWest	1h 30m Los Angeles	LAX 18:57 → BOI 22:05UA 5363 · flown by SkyWest	5h 15m	94%	84%
Delta Details →	PHX 12:05 → SEA 15:18DL 2419	1h 17m Seattle	SEA 16:35 → BOI 19:13DL 3688 · flown by SkyWest	6h 06m	98%	84%
Tight connection: often missed
Alaska Details →	PHX 07:00 → PDX 09:43AS 511	47m Portland	PDX 10:30 → BOI 12:49AS 2089 · flown by Horizon	4h 49m	74%	71%
Alaska Details →	PHX 16:00 → SEA 19:06AS 289	53m Seattle	SEA 19:59 → BOI 22:24AS 2034 · flown by Horizon	5h 24m	58%	50%
American Details →	PHX 15:15 → DFW 19:53AA 2113	1h 12m Dallas-Fort Worth	DFW 21:05 → BOI 23:21AA 1104	7h 06m	65%	27%

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 15m · leaves 08:50 4%

SEA · 1h 07m · leaves 07:20 11%

PDX · 47m · leaves 07:00 26%

Afternoon and evening

SJC · 53m · leaves 13:55 25%

DFW · 1h 12m · leaves 15:15 35%

SEA · 53m · leaves 16:00 42%

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 4245 PHX 07:05 → BUR Alaska AS 3209 BUR 11:00 → BOI Connection details →	2h 30m	6h 04m	100%	98%
Southwest WN 2885 PHX 07:45 → SMF Alaska AS 2157 SMF 13:10 → BOI Connection details →	3h 25m	6h 50m	100%	91%
Southwest WN 2427 PHX 07:55 → LAX Delta DL 3773 LAX 11:44 → BOI Connection details →	2h 24m	5h 56m	100%	89%

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