Wake up early morning and go to the domestic terminal to catch a mountain flight to everest! (You should book tickets online beforehand. It costs about 7k INR per head but totally worth it.) Most mountain flights depart between 6 am - 7 am.
Book with Buddha air. Do you know the best part about this flight? If you don't get the views for whatever reason, flight cancellation or clouds blocking your views etc., you will get full refund!
It is a ~50 min flight and once you are back, take a flight to Pokhara around 11 am. These domestic flights are usually small flights and it's a very different experience from the regular boeings that we usually take. So, do try it out once but be prepared for long delays. They are pretty common in Nepal.
Yeti airlines flight from Kathmandu to Pokhara
You can reach Pokhara by afternoon and cover few of the following places before heading to your hotel:
Phewa Lake and Barahi Temple, Devis Falls, Gupteswar Mahadev Cave, Tibetean Refugee Camp & end the day with World Peace Pagoda which offers some amazing views!