The list with the added cost of the flights, with the current pricing, is estimated to be:

1. Start in New York City, USA, and fly east to London, UK (flight time: 7 hours, est. cost: 320 USD)

2. From London, fly east to Dubai, UAE (flight time: 7 hours, est. cost: 350 USD)

3. From Dubai, fly east to Singapore (flight time: 7.5 hours, est. cost: 480 USD)

4. From Singapore, fly east to Sydney, Australia (flight time: 8 hours, est. cost: 420 USD)

5. From Sydney, fly east to Santiago, Chile (flight time: 12 hours, est. cost: 2,250 USD)

6. From Santiago, fly east to Johannesburg, South Africa (flight time: 9 hours, est. cost: 1,600 USD)

7. From Johannesburg, fly east to Cairo, Egypt (flight time: 7.5 hours, est. cost: 420 USD)

8. From Cairo, fly east back to New York City, USA (flight time: 11 hours, est. cost: 700 USD)

Total estimated flight time: 62 hours.
Total estimated cost: 6,540 USD.

Keep in mind that the total cost may increase depending on accommodation between flights, layovers, season, and other factors.
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