JR asahikawa to asahikawa airport ?

what bus can i take from JR asahikawa station to asahikawa airport? Please give me detail like what number the bus and the bus time-table at JR asahikawa. Will the operate at march? Must I book the bus first? please give English websit if got any.

what bus can i take from JR asahikawa station to asahikawa airport?

The Airport Bus. I don't think it has a number. It operates around the year. No reservations are possible.

The timetable is here. It changes frequently according to the flight schedule:
http://www.asahikawa-denkikidou.jp/jikoku.html

must I buy bus ticket? If yes, where should I buy from?

I believe the bus works as explained here:
http://www.japan-guide.com/e/e2015.html

Is the airport bus near the JR asahikawa station?The website you give me they only got up to march 26.I am leaving at march 29.Is they other buses?
thank you

Is the airport bus near the JR asahikawa station?

Yes, but not immediately in front of the station building. It is located in front of the Asahi Building (アサヒビル) across the street, as shown on the following map:
http://www.asahikawa-denkikidou.jp/map.html

The website you give me they only got up to march 26.I am leaving at march 29.Is they other buses?

As you might have noticed, each bus departure is matched up with a departing flight. This will not change beyond March 29. There will always be a connecting bus for your flight.

The exact timetable for April (valid from March 27) has not been published on their website, but the changes can be expected to be minor or non-existing. In any case, every flight will have a connecting bus.