When I booked my first-ever flight with Alaska Airlines, I noticed that trading up to first class on my return flight from Seattle to Anchorage would only cost an extra couple of hundred dollars.
They are located on the C Concourse. Not only is there priority boarding for first-class Alaska Airlines passengers, but there is also a separate area.
The lounge at Seattle Aiport was okay but nothing special, although it did have a lovely water feature.
In my opinion, the best thing about flying Alaska Airlines first class was the seats. The seats are 20 inches wide and have a 41-inch pitch.
There are quite a few good options for eating and drinking at Anchorage Airport.
I was exhausted, so I had booked a window seat for a potential in-flight nap. I was delighted to discover that this also gave me amazing views over Alaska.