From Magadan to Alaska
 

Somebody knows how fly with my moto from Vladivostok, Magadan or Anadyr to Alaska ( Nome ? ) Any other route by plane ?

Nope!

There are no commercial flights (passenger or freight) flying to Alaska from Russia.

However, if money is no object, it might be possible to arrange a local plane to take it (and you?) as a one off - assuming they get the necessary ATC and customs clearances and have $$$$$$$$$. And a lot more $$$$$$$$$$$.

Magadan is essentially a dead end, served by internal flights only.

Anabar is an unknown (to me), except only that one moto has ever reached there - a quite unique and determined 'hard man' that I seriously doubt anyone will follow or equal in determination and inginuity.
There are long distance plans for a federal highway from the Kolomya Highway (Road of Bones) to Anabar, but realistically not in this decade.

Vladivostock is at least more accessable and more international, but not for flights!

If reasonably commercial routes is what you want you will probably have to get to S Korea. From there they will fly you to East Coast USA or Canada any day, but rarely Alaska. Also we are back to $$$$$$$$$. Flights from S Korea are full of export freight so you are fighting for space. Flights back are relatively empty so costs appear reasonable by comparison.

The direct ships alternative to Alaska is equally bleak.