Can you use miles to upgrade on American Airlines?

Related questions

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Tags

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2. #operated
3. #flights
4. #marketed
5. #valid
6. #three
7. #segments
8. #single
9. #miles
10. #eagle
11. #american
12. #aadvantage
13. #service
14. #maximum
15. #anyone
16. #yourself
17. #airlines
18. #cabin
19. #designate
20. #upgrade