What is online check in for flight?

Related questions

1. Can I do online check in if I have baggage?
2. How can I get e ticket from Irctc?
3. Do I have to print spirit boarding pass?
4. How early can you check bags Alaska Airlines?
5. Do you have to pay for seats on Lufthansa?
6. When can I check in with Finnair?
7. What's the benefit of online check in?
8. Can you check in online with Finnair?
9. Is itinerary same as E ticket?
10. What is the benefit of online check in?

Tags

1. #baggage
2. #depending
3. #quantities
4. #carrier
5. #flight
6. #which
7. #details
8. #internet
9. #check
10. #boarding
11. #online
12. #confirm
13. #presence
14. #seating
15. #options
16. #preferred
17. #print
18. #enter
19. #process
20. #their
21. #passengers
22. #typically
23. #select
24. #passes
25. #specific