Kai, you can probably get any two of those three easily. Great fishing that is cheap will usually be crowded. Great fishing that is uncrowded will usually be either expensive or require some difficulty in getting to it.

That said, there is oodles of fishing in AK at this time of the year. There is road fishing on Kodiak for silvers pretty soon that would be cheap. You'll see lots of people, but there will be room for fishing. Same for Cordova, Prince Edward Island, and the Kenai area.

Yes, you are too late for freshwater kings - those runs are over at this time.

Someone else will have to help with BC, I haven't fished there for salmon.
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