Taxis are available on location for $10-12 to the Jetport. If you walk .3mi out to Congress St via Sewall St, you can take the Metro City Bus (Route 5) for $1.50 ($0.75 for seniors) to the Jetport. There is parking available ($5/ day on a 24hr clock) at Concord Coach Lines. There are Lots A, B, and C. You may have to park in Lot C and walk a little further during peak travel times.
Price is around $10. I don't think there is much parking.
There are shuttles and cabs available but I am not sure about the prices
Thanks! Your answer is awaiting moderation.