Hi,
Planning a few weeks vacation in Mexico and need some help.
What is a normal, el cheapo fare, for domestic flights in Mexico?
We are flying MEX-PVR and CUN-MEX.
Should it be an idea to by a mexipass, if those are availeble?
Should I buy the tickets before we leave, or is it cheaper to buy over the counter in Mexico? (going on UA from ARN to MEX)

cheers
Magnus