Catch Boston Celtics home and away at Immortal Seats. Buy Boston Celtics courtside tickets, Buy Boston Celtics Club Level Seats, Buy Boston Celtics Lower Level tickets, Buy Boston Celtics Sideline Seats, Buy Boston Celtics corner lower level tickets, Buy Boston Celtics mid level tickets, Buy Boston Celtics Upper Level tickets, Buy Boston Celtics end zone tickets, Buy Boston Celtics center tickets, Buy Boston Celtics aisle tickets. Purchase all Boston Celtics tickets at immortalseats.com. Save 5% OFF every order with Code: SAVE5 on Immortal Seats Mobile App. Enter Save5 code in the promo area on Immortal Seats Mobile App to save 5% OFF every Boston Celtics ticket purchase. All Boston Celtics tickets purchased are backed by Immortal Seats 200% Guarantee.