With the activation of FS20 airports in FS24 I eagerly loaded up a flight and chose two FS20 airports to stream for my flight. I chose:
Inibuild EGHI
Orbx EGNT
I am delighted to say that both airports appeared to work seamlessly, or at least no bugs or defects that I spotted.
Other FS20 airports I have used in FS24 (streamed):
EGNS (UKScenery2000) - no issues noted
I asked about this over at avsim and it seems that most 20 airports seem to be working fine in 24 from the responses I had save for a few issues where the 24 terrain is significantly different from 20 (so a few little lumps and bumps in taxiways for example).
Hello,
Which Airports are successfully ported from MSFS 2020 to MSFS 2024 on your Xbox System ?
I am asking because i want to buy some Airports on the MSFS 2020 Marketplace to have them in the new MSFS 2024 Library. Mostly i am interested in European Airports 
Are you asking which airports have been converted to 2024 format, or which (2020) airports work in 2024 straight up without changes?
Which are working in 2024 without Changes.
The only ones I’ve tested are my own, and they work for the most part. A couple weirdnesses, but nothing major.