var results = from e1 in context.Entity1s
join e2 in context.Entity2s
on e1.DestinationId equals e2.DestinationId
select new EntityDTO
{
DestinationId = e1.DestinationId,
Name = e1.Name,
JobTitle = e1.JobTitle,
DestinationName = e2.DestinationName
};