SEA parking
 

Not sure if this is the right place but it seems to be the most appropriate. I'm at an east coast regional AA wholly owned and just moved to the Seattle are. Desperately waiting for Alaska to begin hiring again, but in the mean time I commute out of KSEA and cannot seem to be able to find any half decent parking solutions that don't cost a fortune. I joined the waitlist for employee parking but at the rate the waitlist is moving, I predict I'll get a spot in 7.8 years (Sorta joking but not really, I moved 5 spots in 2 weeks and am at 1013 currently).

Currently using SeaTac park 3rd party offsite parking but with the amount of days I need to commute it will cost $400-500 per month.

Any ideas?

If you're in a position to use a Park n' Ride and then take the lightrail into Sea-Tac that might be a good option. I know a good amount of people who do that. Another thought is just grabbing an uber and leaving your car at home. If you're commuting to the east coast that might me more cost effective than parking at an airport lot.

How about parking at the adjacent light rail stations?

I use this App called “Way” (red square with white letter “way”).
you can get deals on all kinds of stuff but the parking section is actually really good. It allows you to park at nearby Hotels, sometimes free or for a low daily fee. Check it out, it may help you.