Mo bay to Portland then Portland to negril

[Rastaron]

what was the cost for the various timair flights and how long does each one take

[Odinson]

what was the cost for the various timair flights and how long does each one take

I am not sure about the cost but you can get that here:
http://www.timair.net/rates-domestic...rters-jamaica/

It is not cheap but worth it (as far as I am concerned) at least for the PA to Negril leg - that takes around 1 hour wheels up to down. MBJ to PA takes around 45 min.