Münster / Osnabrück Airport

Can anybody tell me how to get to Münster/Osnabrück Flughafen?
Yes I´ve tried the route planner but it keeps coming up with Osnabrück Flugplatz.
A "Flugplatz" is to me a place where they fly little private planes/jets and I cant see Air Berlin landing there.
I need to pick up my other half on Saturday at 23:55hrs (shit I´m night blind as it is) from Münster/Osnabrück Flughafen. Now where is the Airport exactly, in Münster or in Osnabrück???
I haven´t seen Jay for over three month and the last thing I need is not getting there on time. Now I leave Hamm and I need to go on the Motorway towards Münster but as I dont know where the bloody thing is(the Airport I mean, I do know where the motorway is) I dont know how far to go.
If anybody could help then I would really apreciated.

cheers Mickey

Mickey it is in Münster / Greven Autobahn A1 hinter Münster Flughafen ausgeschildert the ausfahrt is called Greven

or ladbergen

cheers for that steve...hope I find it as if I dont he might think I found a replacement.