The fares are: £1.50 flat rate return for adults, including two under 16's free; and £1.00 flat return for children.
All valid existing Stagecoach Bluebird or First Aberdeen day tickets will also be accepted.
The first service from Kingswells leaves the Park and Ride site at 9am and the last bus returns there at 6.53pm.
The first service from Bridge of Don leaves the Park and Ride site at 8.50am and the last bus returns there at 7.05pm.
Stagecoach Bluebird has been awarded the contract for the services, which will run on Sundays 27 November and 4, 11, and 18 December at a 20 minute frequency.