I've made it on flights arriving as little as 20 minutes before, but I usually recommend an hour and a half.
I was told an hour and a half when I flew out of GEG on the 8th of December.
I would get there an hour early
An hour is the latest I would recommwnd, as lines could be long
It very much depends on how busy they are. I always try for two hours just in case.
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