Flightright does not publicly provide a telephone number of a customer hotline. However, instead of being available by phone, the flight compensation company allows users to contact it via e-mail at service@flightright.de or by fax (+49 (0) 33 02 89 82 81 09). Flightright also answers frequently asked questions in the FAQ section of its website.
Qamqam’s comparison of the individual passenger portals describes the contact options offered by other passenger portals for requests from (potential) users.