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

The nonstop is quickest: Southwest SMF → GEG (1h 50m), on time 78% of the time. Alaska via Portland (3h 55m) is more reliable, 98%, but takes 2h 05m longer.

Nonstops (seasonal or thin)


Southwest	SMF	GEG	1h 50m	78%	0.0%	607	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. Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	SMF 11:46 → PDX 13:18AS 621	1h 12m Portland	PDX 14:30 → GEG 15:41AS 3262 · flown by SkyWest	3h 55m	100%	98%
Delta Details →	SMF 11:34 → SEA 13:45DL 3881 · flown by SkyWest	1h 55m Seattle	SEA 15:40 → GEG 16:57DL 3857 · flown by SkyWest	5h 23m	98%	90%
Alaska Details →	SMF 06:13 → SEA 08:16AS 1409	1h 39m Seattle	SEA 09:55 → GEG 11:00AS 2200 · flown by Horizon	4h 47m	100%	90%
Delta Details →	SMF 09:21 → LAX 10:58DL 3700 · flown by SkyWest	2h 08m Los Angeles	LAX 13:06 → GEG 15:48DL 3794 · flown by SkyWest	6h 27m	95%	89%
United Details →	SMF 08:50 → DEN 12:16UA 2285	1h 30m Denver	DEN 13:46 → GEG 15:12UA 324	6h 21m	98%	85%
Delta Details →	SMF 13:00 → SEA 15:16DL 4125 · flown by SkyWest	2h 43m Seattle	SEA 17:59 → GEG 19:17DL 3832 · flown by SkyWest	6h 17m	99%	84%
United Details →	SMF 06:00 → SFO 06:54UA 1954	1h 16m San Francisco	SFO 08:10 → GEG 10:27UA 6014 · flown by SkyWest	4h 27m	94%	83%
United Details →	SMF 05:00 → DEN 08:22UA 1889	2h 53m Denver	DEN 11:15 → GEG 12:37UA 295	7h 37m	99%	82%
Tight connection: often missed
Alaska Details →	SMF 19:17 → PDX 20:50AS 2335 · flown by Horizon	1h 00m Portland	PDX 21:50 → GEG 22:59AS 1356	3h 42m	67%	55%
Alaska Details →	SMF 17:37 → SAN 19:21AS 3036 · flown by SkyWest	1h 01m San Diego	SAN 20:22 → GEG 23:07AS 566	5h 30m	55%	45%
Alaska Details →	SMF 12:57 → SEA 14:56AS 1476	55m Seattle	SEA 15:51 → GEG 16:59AS 3305 · flown by SkyWest	4h 02m	57%	43%

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

SFO · 1h 16m · leaves 06:00 6%

LAS · 50m · leaves 07:05 10%

SEA · 1h 14m · leaves 08:03 21%

Afternoon and evening

SLC · 1h 18m · leaves 13:30 9%

PDX · 1h 00m · leaves 19:17 33%

SAN · 1h 01m · leaves 17:37 45%

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 949 SMF 10:12 → PDX Alaska AS 3262 PDX 14:30 → GEG Connection details →	2h 48m	5h 29m	96%	96%
Southwest WN 1739 SMF 11:00 → SEA Delta DL 3857 SEA 15:40 → GEG Connection details →	2h 45m	5h 57m	100%	93%
Southwest WN 4920 SMF 05:00 → SEA Alaska AS 2200 SEA 09:55 → GEG Connection details →	3h 00m	6h 00m	100%	90%

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