Are there any redemption limitations with miles bought from Mileage Plan (Alaska Airline)?

My question is regarding buying Mileage Plan Points from Alaska Airlines. If I say buy 120,000 points am I able to redeem them all in one booking. The reason that I ask, is that with Qantas Points you can only use a maximum of 20% of purchased points on a flight. Is this the same (or similar) for Mileage Plan Points? I can’t seem to find the answer anywhere.

Thank you.

There is no restriction, you can use 100% purchased miles for any award ticket on Alaska. I have done this multiple times.

Have never heard of the 20% requirement for using QF points, nor any other airline for that matter.