Concourse E is the US border preclearance area and consists of 20 gates: E75 to E87 and E90 to E96. Gates E75 to E78 can accommodate smaller wide-body aircraft and are swing gates which can be used for international departures (as gates D75 to D78).
The majority of US-bound flights operate from Concourse E; the only exceptions are flights from an international origin (Cathay Pacific's Hong Kong—Vancouver—New York and Philippine Airlines' Manila—Vancouver—New York flights), or flights that depart after 8:30pm (e.g. Delta Air Lines' Vancouver—New York flight).