Let’s play a guessing game.
First, which global airline route do you suppose was the busiest during 2023? Are you ready for the answer? Hint: It’s not what you think. When you’re ready, check out the answer below.
Second, guess what the busiest *domestic* USA flight was (between airports within the USA). (Hint: Again, you’ll never guess.)
Last one: In 2023, which was the busiest airport in the world? (Hint: We don’t think you’ll guess this one either – but some *might*.) No peaking until you’ve guessed.
When you’re ready for the answers, click “read more.”

Answer: Busiest global airline route – Kuala Lumpur (KUL) to Singapore Changi (SIN) with 4.9 million seats. We would never have guessed that route.
Busiest domestic: Honolulu (HNL) to Kahului (OGG) is the busiest domestic route in the USA in 2023 with 3.6 million seats. What in the world? Were they all going to Maui to fight fires?
Busiest airport in the world: Atlanta Hartsfield-Jackson Intl Airport.

All answers were gathered from https://www.oag.com using 2023 stats. (Thanks for the idea, Caleb!)