Price a livery company...sometimes it's the same as parking but so much easier
Do you need to drive, do you need your car? Check to see if the trains fit your schedule. You can take the MBTA's Providence line from Providence to the South Station and then catch the Silver Line to the airport. If the Providence line is not frequent enough, check out the Franklin line, looks like they run more frequently, and again, South Station and then Silver Line. The parking at the lots is usually $4 a day
If you do try the train route, check www.mbta.com to see what lots allow overnight parking. Not all do.
If you can get a cab to the train in Providence, I'd do that. Or better still, have a friend drop you off.
Parking at the Braintree shuttle is not cheap. Be careful where you leave your car because there are commercial lots near T stations that routinely tow.
My suggestion is to go 95 north onto 128 south, then take the Braintree exit (South Shore Plaza,) and use Logan Express. It is positively the easiest and very direct route to the airport. We just used Braintree Express in Dec. You avoid the hassle of driving into Boston. We bought round trip tixs. You can park your car there and where you will only be gone 4 days at $7.00 per day.
The busses run on time also. There is a Dunkin Donuts inside the terminal and you can get coffee for your bus ride. Honestly, it is really the most sensible way to get to Boston. We live about 45 min. south of Boston and this works out well for us.
Here is the schedule:
Leave Braintree to Logan:
Weekdays Early Bird Trips 3:00 a.m., 3:15 a.m., and 3:30 a.m.
From 4:00 a.m. - 11:00 p.m. every half hour
Saturday Early Bird Trips - 3:00 a.m., 3:30 a.m., 4:00 am; 4:30a.m. 5:30 a.m.
From 6:00 a.m. - 10:00 p.m. every hour
Sunday Early Bird Trips - 3:00 a.m., 3:30 a.m., 4:00 a.m., 4:30 a.m. & 5:30 a.m.
From 6:00 a.m. - 12 noon every hour
From 12 noon - 11:00 p.m. every half hour
Leave Logan to Braintree
Weekdays 6:30 a.m. - Midnight every half hour - and 1:15 a.m.
Saturday 7:00 a.m. - 11:00 p.m. every hour - and 12:15 a.m.
Sunday 7:00 a.m. - 1:00 p.m. every hour
1:00 p.m. - Midnight every half hour - and 1:15 a.m
One other thought, there is a bus that goes from Foxboro daily (Peter Pan) that we have used but the schedule is not as good as Braintree Express and it is more expensive. Driving to Braintree is very easy from PVD.
Adult One-Way Fare: $12.00
Adult Round Trip Fare: $22.00
Senior(65+) One-Way Fare: $11.00
Senior(65+) Round Trip Fare: $20.00
Children (under age 12 with adult): Free
Visa, MasterCard, American Express and Diners Club are accepted.
Good Luck. Personnel that work at Logan use Braintree Express as well, there were quite a few onboard the bus.
I just looked up Peter Pan which would depart from Providence or Providence Plaza. This would work for you also. You wouldn't have to drive to Braintree and just board in PVD. Here's the website and you can check out times and prices for your dates.
Just look at the schedule and tickets and you can find your dates.
The schedule is more frequent going from PVD whereas it is limited from Foxboro.