If you receive the error:
Expected primaryExpression
when trying to add a filter to the Kendo MVC grid then you have probably formatted it incorrectly. Try this:
.DataSource(dataSource => dataSource .Ajax()
.Filter(filters => filters.Add(trip => trip.DepartureDate).IsGreaterThanOrEqualTo(DateTime.Now.Date).And().IsLessThan(DateTime.Now.Date.AddDays(1)))
.Model(model => model.Id(p => p.ID))
.Read(read => read.Action("GetTrips", "Trip")) )