Do I really need to check in 3 hours before flight?

Related questions

1. Can you check in for international flights online?
2. Can you choose seats on Alitalia?
3. Are Alitalia strict with hand luggage?
4. Does Etihad own Alitalia?
5. How much does Alitalia charge for checked baggage?
6. When can you check in online Alitalia?
7. How early can you check in for Alitalia flight?
8. Can you check in online with Alitalia?
9. How long before flight can you check in?
10. Can you check in at the airport?

Tags

1. #yourself
2. #flights
3. #united
4. #departure
5. #international
6. #minutes
7. #least
8. #before
9. #carrier
10. #arrive
11. #advises
12. #luggage
13. #scheduled
14. #airport
15. #hours
16. #checking