Traveling from the west you will take the D249 motorway (highway) until it turns into a road called Route de Warcove. Now this road extends past the airfields remains under the same name but on some maps it is referred to as Rue-de-la-Mairie this would be from the easterly direction. If you are coming from the north or south you will take the D38 motorway (highway)
This site is an historic look into the past as it was a very active Luftwaffe Airfield during the Battle of Britain and afterwards. It is worth checking out as you may get a good sense of what it was like here during WWII.
There is no parking other than a side turn off north of the remains on the D38. You will then have to walk a short few minutes until you reach a farmers gate. I couldn't find anyone to ask the day I was there so I just opened the gate and walked in mindful of any farmer folk hard at work in the area. There are number of hangar remains to the right, in the middle is the old airstrip for the BF109's, keep in mind this was the airfield for Luftwaffe fighter ace Adolf Galland, I will post some links below that give you more detail on his time here and that of Jagdgeschwader 26.
There are bunker remains to the left of the airstrip which I was not able to explore on this visit due to time constraints but we will revisit another day for closer inspection.
I used two different cameras on the 2016 visit. The Nikon Coolpix 35mm and the Apple iPhone Six Plus.
Here are two very good external links for more information on JG26 in Audembert.