While ancillary services were initially provided by legacy carriers on short- and medium-haul flights, the emergence of long-haul low-cost carriers has contributed to the adoption of ancillary services on long-haul flights as well. Nevertheless, limited attention has been paid to the specifics of ancillary services on long-haul flights and to how much passengers are willing to pay for such services. In this research, we aim to assess the willingness of passengers to pay for various ancillary services on long-haul flights and show how these values differ depending on passenger characteristics. Based on a choice-based conjoint analysis, we first investigate the importance of five ancillary services (checked baggage, inflight meal, seat selection, priority boarding, and onboard Wi-Fi) in the flight ticket selection process. In addition, we measure passengers’ willingness to pay for the entire sample and for subsets of respondents based on trip motive and age. Regarding trip motive, we reveal that leisure passengers are willing to pay more for most ancillary services than are business passengers. By contrast, when distinguishing between millennial and nonmillennial respondents, neither subsample is globally willing to pay more for ancillary services, with differences for each service. Finally, we compare the estimated willingness to pay for short- and long-haul services and reveal that flight duration has a contrasting impact on the willingness to pay for ancillary services (with either a positive or null impact on willingness to pay). In addition, our comparison of the estimated willingness to pay with the actual fees charged by airlines allows us to draw conclusions on their attractiveness for passengers.

辅助服务最初是由传统航空公司在中短途航班上提供的，而长途低成本航空公司的出现也促进了在长途航班上采用辅助服务。但是，对于远程航班的辅助服务的具体细节以及愿意为这种服务付费的乘客的关注很少。在这项研究中，我们旨在评估乘客为长途航班支付各种辅助服务的意愿，并显示这些值如何根据乘客的特点而有所不同。在基于选择的联合分析的基础上，我们首先研究了机票选择过程中五项辅助服务（托运行李，飞机餐，座位选择，优先登机和机载Wi-Fi）的重要性。此外，我们会根据旅行动机和年龄来衡量乘客愿意为整个样本和部分受访者付款的意愿。关于旅行动机，我们发现休闲乘客愿意为大多数辅助服务支付的费用要比商务乘客要多。相比之下，在区分千禧一代和非千禧一代的受访者时，没有一个子样本在全球范围内愿意为辅助服务支付更高的价格，每种服务的差异也很大。最后，我们比较了估计的短期和长期服务支付意愿，并揭示了飞行时间对辅助服务支付意愿的影响是相反的（对支付意愿的影响为正或零）。此外，