How to buy tickets to machu picchu when they are sold out
For this action I recommend making the purchase with due anticipation because they are the first to be sold out online on the official website of the Ministry of Culture. Do it before seeing any flight plan, since you run the risk of not being able to enter this world wonder when you buy your plane ticket without booking your tickets to Machu Picchu.
The prices to enter Machu Picchu by 2019 for each adult
✓ S /. 64 nuevos soles for Peruvians and citizens of the Andean Community.
✓ S / .152 nuevos soles for other foreigners. About 41 euros or 46 USD (approximate change with Xe.com).
✓ Children under 18 have a price reduction as if they were students up to 50% off. In the case of the image: 70 nuevos soles (PEN).
Official ticket to Machu Picchu
What to do when the tickets to Machu Picchu are sold out
If you see that tickets to Machu Picchu are sold out on the official website you can always try an operator that has legal tickets and you can enter Machu Picchu without problems.
In this link you can see and buy several options, anyway you have individual options below:
✓ Official ticket to Machu Picchu
✓ Joint entrance to Machu Picchu + Huayna Picchu
✓ Joint entrance to Machu Picchu + Machu Picchu Mountain
✓ Machu Picchu: official entrance
Full tour to Machu Picchu from Cusco
There is also the possibility of taking a tour from Cusco with the included tickets, train, bus and guide (except meals, drinks or tips). You can see the details and book on this link.
For all cases: remember to bring your passport to Machu Picchu if you are a foreigner or ID if you are Peruvian.