Prices for the away game at the Stade Marcel Michelin, on Sunday December 11 (4pm local time), are £20, £27 and £38 for seating, £12 standing.
These tickets can be purchased online by clicking here or phone or visit the Tigers ticket office. But only until 5pm today (Friday November 25).
Any unsold tickets will be returned to Clermont and will be available direct from the French club.
Tickets for the return fixture, at Welford Road on Saturday December 17 (1.30pm), are available now. Book from the Tigers ticket office in person, by phone or online. Or buy from the Club Store in Market Street, Leicester.
The Tigers ticket hotline number is 0844 856 1880.
The ticket office is open 8.30am-5pm weekdays, until 8pm every Wednesdays, 9am-5pm Saturdays and until an hour after the final whistle on matchdays.