Do I need an E ticket if I have a boarding pass?

Related questions

1. Do I check in for a connecting flight?
2. How do I print out my boarding pass?
3. How does Southwest check in work?
4. Do I have to collect my luggage on a layover?
5. Does early bird check in transfer?
6. Will I have to recheck my luggage on an international flight?
7. Is boarding pass print out necessary?
8. What is boarding pass in airport?
9. Do you still need to check in with early bird check in?
10. Do you have to go through TSA again for connecting flights?

Tags

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11. #online
12. #airline
13. #hours
14. #check
15. #copies
16. #confirmation
17. #scannable
18. #flight
19. #boarding
20. #flying
21. #print
22. #choose
23. #prefer