[Part I](https://www.reddit.com/r/AlaskaAirlines/comments/1t08ycl/life_as_a_spoke_gegspokane_part_i/) link looked at GEG generally and this post looks at AS flights specifically.  

I analyzed a single day (4/20/26)  and though it appears fairly representative, there are limits to drawing conclusions from such a small sample size.  Nevertheless, on that day, there were 44 flights (22 arriving and 22 departing) and 7 planes had remained overnight from the previous day.  

As the chart shows, AS flew to SEA (8 flights); PDX (5); BOI (4); LAX (2); and SAN, SFO, and SNA (all 1).  Five of the SEA flights and single flights to SAN and LAX are 737s, but all the others are E175s (see chart).  Thus, in terms of overall passengers, SEA has by far the most.  

The schedule seems solid for a Top 100 airport in the core AS footprint:  good frequency to the two major hubs for connections; flights to other hubs and nominal hubs (SAN, SFO, and LAX); and a flight to a third key southern California airport (SNA).  Given the proximity to the larger hubs of SEA and PDX, one imagines that the California destinations are less for connections, other than perhaps the Mexico and Central America network at LAX.  (Note that AS will also fly GEG-ANC twice-weekly this summer, which is a fun seasonal addition.)  

The frequency of flights to BOI is surprising to me, as BOI does not serve all that many more destinations than GEG for connections and I am not aware of other reasons for so many flights to two regional cities.  (I suspect this is ignorance more than anything else.)  In terms of additions, a flight to LAS seems plausible (WN does it already) and commenters of the first post suggested PAE.

The day begins early:  At around 5:00 am, two flights departed, one to SEA (737) and one to PDX (E175), presumably to catch the first wave of flights at those hubs.  Between 6:00-6:30 am, two more flights departed, another to SEA (737) and one to BOI (E175).  Between 7:00-7:30 am, flights to SEA, SAN, and LAX (all 737s) departed.  All of these planes had overnighted at GEG.  

I understand BOI has more space available than SEA, so the RONs presumably achieve an airline/network logistics goal in addition to feeding the early SEA flights.  Three of the first five flights out are to SEA and all are 737s that arrive in SEA early in the morning.

Beginning at around 7:45 am, the first arrivals appear from BOI, PDX, SEA, SNA, and SFO, all E175s.  Those planes are turned around and sent back to essentially the same group of airports.  The afternoon slows down, with most hours having just one arrival.  Those planes are also turned around and sent to those same airports.  The overwhelming majority of these flights are E175s.  The details are in the charts above.  The SAN departure is in the morning, SFO is mid-day, and SNA is in the afternoon.

Beginning at around 9:30 pm (and ending at 11:59 pm), the planes that will overnight at GEG begin to arrive.  Presumably these flights return GEG-based connecting travelers (and others) home to Spokane.  The bulk of these planes are 737s -- only two of the last seven planes are E175s.    
   
The last chart attempts to depict hour-by-hour arrivals and departures.  Each dot indicates a single flight and the color indicates the type of airframe.  The light shading indicates a RON plane.  

I also took a quick look at gate usage:  The vast majority of flights use gates C6, C7, and C8 and those gates are fairly active, each having 4-5 turnarounds.  But the early morning departure rush also includes C4, C5, and C9.  These gates are lightly used:  C4 and C5 had only a single arrival and departure each and C9 had two morning departures and one evening arrival.  Indeed, C4 had a single departure at 5:05 am and a single arrival at 10:54 pm, and presumably that plane overnighted at the gate.  C5 was similar.  It did not appear that other airlines use those gates, so it seems like AS has the gate space to grow at GEG.  The gates are noted in the charts.

Again, I have never been to GEG so there are likely some errors and oversights.  Plus, as usual, this was done by hand so there might be some minor errors.



Life as a Spoke -- GEG-Spokane (Part II)