The demand for mobility has evolved with increasing globalization. Multimodal passenger transport has grown steeply. The ease of obtaining information on the schedule, making a ticket reservation, and making a payment is obvious. This method of e-ticketing is also more cost-efficient, simple and practical, compared to conventional ticketing system with a hardcopy ticket. Nearly all transport providers have been providing an e-ticketing service, both independently and integrated in a multimodal e-ticketing platform. This paper outlines a study on the integration of e-ticketing system of a ferry operator, and an effort to integrate it into a common e-ticketing platform. The finding shows that the biggest challenge of entering into an e-ticketing system and integrating it into an e-commerce, i.e. common e-ticketing platform lies in the core of ship operations, namely the necessity to have an access on a real-time and reliable ship scheduling.