Flight from the Nazca airfield
The listing for this option says departure from Ica and a day of 7 to 8 hours. It includes hotel pickup, transport, a 35-minute flight over the Nazca Lines and a flight certificate. Depending on the option it adds the Cantalloc aqueducts and the Maria Reiche Museum. It is the choice for anyone already in the Ica area who wants the flight without extra travel.
Flight departing from Lima
Here the listing says 24 hours, with bus transport, a 30-minute flight in a light aircraft and a guide. It leaves from Lima, in exchange for a long trip. Think about it if you are short on days and prefer to handle Nazca from Lima, and check on the listing what the return is like before booking.
Combo with Ballestas and Huacachina
The listing says 18 hrs 30 min from Lima, with transport, a flight over the lines and a boat ride in the Ballestas Islands. In the same day you take in three south coast plans. Check on the listing which Huacachina activity is part of the option you choose.
What you pay separately
All three listings leave something out: the airport tax, the tourist tax and, on the flight from Nazca, the admissions for the Nazca tourist ticket, the museum and the aqueduct. Food and drinks are also on you in the listings that say so. Set aside that part of the budget before booking.