Sorting the things to do in Luxor, Egypt into two banks is the whole planning job, so the order below follows the light rather than a map. Each stop takes a half day at most, and this sequence never asks you to cross the river twice in one day.
1. A Dawn Balloon Flight Over the West Bank
Flights lift off at first light, so the pickup comes while it is still dark and you are back on the ground before the heat builds. From the basket, the Theban mountains, the green strip along the river, and the Valley of the Kings all sit below you at once, and Karnak shows up across the water while you are still low over the fields. That is the one time the whole layout reads in a single look. Book it for your first morning rather than your last, so you still have another dawn to fall back on. Winter mornings are cold before sunrise, so bring the layer you packed for the evenings.
2. Karnak, a Complex Rather Than a Single Temple
Karnak is not one temple but a set of them, built and enlarged across centuries. Give it half a day and arrive at opening, when the courts are nearly empty, and the columns throw long shadows into the aisles. The Avenue of Sphinxes still runs from here toward Luxor Temple, the ceremonial road that once joined the two. This is also where the ticket arithmetic starts: the Luxor Pass costs 180 to 240 Egyptian pounds depending on tier, pays for itself at four or more of the five sites it covers, and does not extend to guided tours or cameras. Buy it at the first monument you enter, while the day is still ahead of you.

3. Luxor Temple After Dark
Luxor Temple sits inside the town rather than outside it, which is why it works as an evening stop instead of a morning one. The site is lit after sunset, the sound and light show runs there, and the stone reads differently under lamps than under the sun. Go on your first night, while the travel day still has you awake, and let it set the tone for the rest of the trip. The walk back through town afterward, past the corniche and the open-air tables, is part of the evening.
4. The Valley of the Kings, a Morning Rather Than a Stop
The pharaohs cut their tombs into the rock here instead of stacking them into pyramids, and Tutankhamun's tomb is the name most people arrive knowing. Which chambers you can enter is settled on site rather than by whatever list you read at home, so ask when you get there what is open that day and take the answer. The setting is a dry basin with almost nowhere to sit and almost no shade, which is why this belongs at the front of your day rather than the middle. Plan the whole morning around it.

5. The Temple of Hatshepsut at Deir el-Bahari
The Hatshepsut temple stands on the west bank at Deir el-Bahari, and it is the natural second stop after the tombs rather than a separate trip. Keep shoulders and knees covered, stay behind the barriers, and never touch the carvings, because the paint still on the walls is the reason those rules exist. There is very little shade on the approach, so do it before the afternoon glare settles in.
6. The Colossi of Memnon, a Photo Stop That Earns Its Place
The Colossi of Memnon stand on the west bank, and they cost you a stop rather than a detour, which is the right way to treat them. Nobody builds a morning around two statues, but you pass them between the tombs and the water, on the way back. Arrive early and the light comes in from the side. Arrive at midday, and you get flat heat and a row of vans.

7. A Sail on the Nile, Felucca or Cruise
The river is the reason the city exists, and an afternoon on it is the easiest way to see both banks at once. A felucca out of Luxor puts you on the water with the Theban mountains behind you and the town ahead. If you are heading south, a Nile cruise between Luxor and Aswan does the same at a slower pace, with the temples and tombs built into the days and one cabin to unpack into. Take the sail late in the afternoon, when the heat drops and the light softens.
8. The Market at Al-Markaz al-Souq
After the tombs close and the temples light up, the town does its own thing, and the market around Al-Markaz al-Souq is where that happens. Stalls run late, the open-air tables fill up, and the pace is the opposite of a site visit: no ticket, no fixed route, no reason to be anywhere at a set time. It is the one item here you can move to any evening without breaking the plan, which makes it the thing to keep when a late arrival eats your first afternoon. Order whatever the next table is eating and stay outside; nobody is in a hurry at that hour.