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 50-minute layover misses 8% of the time at 7 am and 1 time in 3 at 9 pm.

Nonstops


Delta	SLC	BOI	1h 17m	87%	0.8%	1,741	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. Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	SLC 08:20 → PDX 09:26AS 3004 · flown by SkyWest	1h 04m Portland	PDX 10:30 → BOI 12:49AS 2089 · flown by Horizon	4h 29m	97%	93%
Southwest Details →	SLC 06:25 → LAS 06:50WN 4205	1h 45m Las Vegas	LAS 08:35 → BOI 11:25WN 2192	5h 00m	100%	91%
American Details →	SLC 07:13 → PHX 07:57AA 6327 · flown by SkyWest	2h 13m Phoenix	PHX 10:10 → BOI 13:27AA 4948 · flown by SkyWest	6h 14m	98%	91%
Southwest Details →	SLC 06:15 → PHX 06:55WN 3751	1h 45m Phoenix	PHX 08:40 → BOI 11:45WN 4601	5h 30m	96%	91%
United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	51m Denver	DEN 07:45 → BOI 09:53UA 4765 · flown by SkyWest	4h 38m	92%	89%
Alaska Details →	SLC 11:17 → SEA 12:30AS 796	3h 15m Seattle	SEA 15:45 → BOI 18:11AS 2061 · flown by Horizon	6h 54m	99%	89%
Delta Details →	SLC 07:50 → SEA 09:05DL 2874	3h 25m Seattle	SEA 12:30 → BOI 15:12DL 3959 · flown by SkyWest	7h 22m	100%	88%
Delta Details →	SLC 07:49 → LAX 08:50DL 1087	2h 54m Los Angeles	LAX 11:44 → BOI 14:46DL 3773 · flown by SkyWest	7h 02m	99%	88%
Tight connection: often missed
Delta Details →	SLC 17:21 → MSP 20:54DL 2935	46m Minneapolis	MSP 21:40 → BOI 23:46DL 2488	6h 26m	67%	49%
Alaska Details →	SLC 19:39 → PDX 20:43AS 3280 · flown by SkyWest	47m Portland	PDX 21:30 → BOI 23:48AS 1524	4h 09m	63%	45%
Alaska Details →	SLC 09:10 → SEA 10:35AS 3381 · flown by SkyWest	1h 01m Seattle	SEA 11:36 → BOI 14:07AS 2106 · flown by Horizon	4h 57m	57%	40%

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 04m · leaves 08:20 3%

LAX · 1h 02m · leaves 09:40 8%

DEN · 51m · leaves 05:15 8%

Afternoon and evening

MSP · 46m · leaves 17:21 33%

PDX · 47m · leaves 19:39 37%

SMF · 55m · leaves 20:15 52%

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 3751 SLC 06:15 → PHX American AA 4948 PHX 10:10 → BOI Connection details →	3h 15m	7h 12m	98%	92%
Delta DL 3681 SLC 07:55 → BUR Alaska AS 3209 BUR 11:00 → BOI Connection details →	1h 56m	6h 14m	94%	91%
Delta DL 2995 SLC 11:35 → SEA Alaska AS 2061 SEA 15:45 → BOI Connection details →	2h 53m	6h 36m	97%	87%

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