Do airBaltic Condições gerais de transporte :
5.4 SEQUENCE AND USE OF COUPONS CONTAINED IN THE TICKET
5.4.1 The Ticket You have purchased is valid only for the transportation as shown in the Ticket, from the point of departure via any Agreed Stopping Places to the final destination. All of the Ticket’s Coupons must be used in full and in the sequence specified in the Ticket. If the Coupon sequence is not followed as specified in the Ticket, the Ticket can be invalidated.
5.4.2 If the Coupon sequence as specified in the Ticket is not followed, or if other provisions regarding their use are not followed (for example, if You do not show up for one of the flights indicated in the Ticket), We or the Carrier operating the flight is entitled to cancel any or all of the unused flights contained in your Ticket, including Your return flight.
5.4.3 Should You wish to change any aspect of Your flights, and Your Ticket’s Tariff permits it, You must contact Us in advance. We will calculate the charge for Your new flights and You will be given the option of accepting Our offered changes and their conditions, or maintaining the original Carriage as specified in the Ticket.
Em outras palavras, não. Você deve usar os tickets em ordem, e a falha em aparecer no seu primeiro voo pode resultar no cancelamento dos voos restantes em seu itinerário. Esta é uma prática padrão da maioria das companhias aéreas, embora haja algumas exceções (por exemplo, easyJet )
Você precisaria entrar em contato com a companhia aérea para saber quais taxas de alteração se aplicam a seu bilhete específico (ou se essas alterações são permitidas) e se essas taxas são mais baratas do que comprar uma nova.