is there a map that is a giant sky for like flying

i just downloaded some planes and i would like to know if there is a giant map made for flying

Yes there are a few. Here are some links of them

http://www.garrysmod.org/img/?t=dll&id=90842

Use search next time.

Flatgrass has more than enough space for flight.

No its not.

thanks

Yes it is.

Hardly.