Why do you have to get to the airport earlier for international flights?

Related questions

1. Does Lufthansa weigh hand luggage?
2. Does a380 have power outlets?
3. Can I have a backpack and a carry on Lufthansa?
4. Does Lufthansa enforce carry on weight?
5. How long should you arrive before a flight?
6. What is Terminal A at LAX?
7. When can I reserve seats on Lufthansa?
8. Does Lufthansa allow 2 bags?
9. What does economy light mean on Lufthansa?
10. Is a backpack considered a personal item on Lufthansa?

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25. #before