I already mentioned it in the "Wings" thread, but I'll repeat it here because I see some people still doubt Devonian Dragons having wings.
Look here:
(
http://imageplay.net/)
I don't know why it's pink though. Don't ask me.
As for Phase Dragons, Ice Dragons (and Black Dragons who accidentally have wings) these look similar to Chinese/Japanese dragons who can fly even without wings.
The only dragons I doubt could fly are the gravity and earth ones. Both have wings, but earth one has wings athropied to spikes, without the membrane, while gravity one seems too heavy, so his wings are only an inheritance after his ancestor who could fly.