1 airport pricing network congestion with market power and endogenous structures eric pels department of spatial economics free university amsterdam erik t verhoef 2 introduction most economic studies in are inspired by the case a congested road consider relatively simple atomistic price taking users that arises on links as opposed to at its nodes many markets however primary operators may possess substantial particular if economies scale scope density or networks allow large produce services low average costs such cases aviation being one be considered this paper often occurs rather than along due concentration flows near home implications for situations although discussion will cast terms insights developed course carry over different modes