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 5% of the time at 9 am and 16% of the time at 7 pm.

Nonstops


Alaska	BOI	GEG	1h 10m	87%	1.0%	1,321	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	BOI 11:55 → SEA 12:42DL 3678 · flown by SkyWest	2h 58m Seattle	SEA 15:40 → GEG 16:57DL 3857 · flown by SkyWest	6h 02m	100%	92%
Alaska Details →	BOI 06:23 → SEA 07:00AS 423	2h 55m Seattle	SEA 09:55 → GEG 11:00AS 2200 · flown by Horizon	5h 37m	100%	90%
Delta Details →	BOI 06:00 → SLC 07:11DL 2173	1h 04m Salt Lake City	SLC 08:15 → GEG 09:07DL 4444 · flown by SkyWest	4h 07m	93%	89%
Delta Details →	BOI 15:29 → SEA 16:11DL 3958 · flown by SkyWest	3h 45m Seattle	SEA 19:56 → GEG 21:12DL 3677 · flown by SkyWest	6h 43m	100%	89%
Delta Details →	BOI 06:43 → SEA 07:35DL 3775 · flown by SkyWest	1h 45m Seattle	SEA 09:20 → GEG 10:34DL 3824 · flown by SkyWest	4h 51m	99%	87%
Delta Details →	BOI 10:36 → SEA 11:41DL 3750 · flown by SkyWest	2h 38m Seattle	SEA 14:19 → GEG 15:40DL 4145 · flown by SkyWest	6h 04m	97%	84%
Delta Details →	BOI 13:05 → SLC 14:21DL 1442	3h 09m Salt Lake City	SLC 17:30 → GEG 18:14DL 1024	6h 09m	100%	84%
Alaska Details →	BOI 13:29 → PDX 13:47AS 2209 · flown by Horizon	3h 43m Portland	PDX 17:30 → GEG 18:44AS 3052 · flown by SkyWest	6h 15m	99%	83%
Tight connection: often missed
Alaska Details →	BOI 05:57 → PDX 06:17AS 1566	46m Portland	PDX 07:03 → GEG 08:13AS 2404 · flown by Horizon	3h 16m	74%	68%
Alaska Details →	BOI 18:13 → SEA 18:53AS 296	57m Seattle	SEA 19:50 → GEG 20:56AS 1342	3h 43m	64%	45%
Alaska Details →	BOI 10:00 → SEA 10:34AS 2166 · flown by Horizon	49m Seattle	SEA 11:23 → GEG 12:29AS 449	3h 29m	18%	11%

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

MSP · 1h 15m · leaves 05:30 5%

PDX · 56m · leaves 09:13 6%

SLC · 1h 04m · leaves 06:00 7%

Afternoon and evening

SEA · 57m · leaves 18:13 36%

SFO · 47m · leaves 19:05 82%

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 2159 BOI 11:42 → SEA Delta DL 3857 SEA 15:40 → GEG Connection details →	3h 24m	6h 15m	100%	93%
Delta DL 3775 BOI 06:43 → SEA Alaska AS 2200 SEA 09:55 → GEG Connection details →	2h 20m	5h 17m	99%	89%
Alaska AS 423 BOI 06:23 → SEA Delta DL 3824 SEA 09:20 → GEG Connection details →	2h 20m	5h 11m	100%	88%

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