\de Jong\, G., Behrens, C., \van Herk\, H. and Verhoef, E. (2022). Airfares with codeshares: (why) are consumers willing to pay more for products of foreign firms with a domestic partner? Journal of Economic Behavior and Organization, 193:1--18.

This paper analyzes partnerships between foreign and domestic firms as a source of signaling advantages, considering the case of virtual codesharing in aviation. Virtual codesharing is an important type of cooperative agreement between airlines that does not change any real product attributes and hence provides the opportunity to identify this signaling effect. Roughly 75% of the flights in trans-Atlantic and Pacific markets involves codesharing. Typically, the consumer buys the ticket with the domestic airline, while a foreign airline operates the flight. Analyzing individual-level choice data from a representative sample of Australian air travelers, we find that the average consumer is willing to a pay a premium between 4 and 5.5% of the ticket price when a flight by a foreign carrier is codeshared with the national carrier Qantas. When flying to a less familiar destination, risk averse consumers are willing to pay a premium about two times higher than non-risk averse consumers, suggesting that partnerships have a strong impact on consumer valuation through reducing perceived risks and uncertainties associated with alien carriers. By this mechanism, home country bias may spillover to foreign partners of domestic firms.