Here’s the Celtics’ official press release concerning the sale of NBA finals  tickets.
BOSTON ‘ The Boston Celtics  announced today that a limited number of playoff tickets for Round 4, home games 1, 2 and 3 (Games 3, 4 and 5 of the series) at the TD Garden will go on sale Wednesday, June 2 at 11 a.m. There is a four (4) ticket limit per event on all seating areas and seats start at $40.
Game 3 is scheduled to be played on Tuesday, June 8, at 9 p.m., Game 4 on Thursday, June 10, at 9 p.m. and Game 5 on Sunday, June 13, at 8 p.m. The opponent is yet to be determined. Please visit Celtics.com for all the latest schedule information as it becomes available.
Celtics fans will be able to purchase on June 2 beginning at 11 a.m. by visiting Celtics.com, by calling 1-800-4NBA-TIX (800-462-2849) or by visiting the TD Garden Box Office. Acceptable forms of payment for tickets are American Express and all other major credit cards and customers may also pay with cash at the TD Garden Box Office.
In the event that Game 5 (Round 4, home game 3) is not played, refunds will be done at the point of purchase. Fans purchasing online would be automatically refunded through Ticketmaster. Ticketmaster will refund the face value of each ticket, facility charge and per ticket service charge. All per order charges (order processing and any delivery charges) will not be refunded.
Fans interested in securing private suites for playoff games may do so by calling the Celtics Sales Office at 866-4CELTIX (866-423-5849). Private suites accommodate 18 fans and catering options are also available. For more information log onto www.celtics.com .