From Delhi you could plan travel to these following places
Leh and Ladakh. You need atleast a week to cover both places. Himachal Pradesh. Visiting popular spots like Manali, Shimla, Dharamshala makes your travel complete. You need 5 days to cover the above one spot.
North east is another lovely place accessible from Delhi. Meghalaya, Sikkim, Darjeeling, Mizoram and Manipur. Kindly check the ILP requirement before planning travel. Rajasthan is one such ideal place to travel in coming days. Jaipur Udaipur Jaisalmer Bikaner and Mount Abu are some lovely spots. Gujarath is popular for spots like Ahmedabad Vadodara Statue of Unity, Ankaleshwar and Kutch. Maharashtra is another east spot accessible from Delhi. Mumbai pune Mahabaleshwar Malshej ghat Igatpuri and more.. You could plan trips to Tamilnadu, while Kerala and Karnataka are experiencing rains now in couple days the state becomes ideal to travel.