A '''fare basis code''' (often just referred to as a fare basis) is an alpha or alpha-numeric code used by airlines to identify a fare type and allow airline staff and travel agents to find the rules applicable to that fare. Fare codes starts with a single letter, called a booking code or class, representingwhich matches the typeletter ofcode ticketthat andthe fare,reservation followedis bybooked optionalin. lettersandOther digits,letters representingor anumbers specificmay set of fare rulesfollow, fortypically instancea howfare manybasic dayswill inbe advance the ticket needs3 to be booked, corporate discounts, or other special7 promotionalcharacthers elementslong.<ref>{{cite book|first=Todd, G., Rice, S|author=Gorham, G|year=2001|title=Travel Perspectives: A Guide to Becoming a Travel Professional|publisher=Thomson Delmar Learning}}</ref>
