Is avios free to join?

Related questions

1. What is my Avios number British Airways?
2. How many Avios do I need to upgrade to business?
3. Which country owns British Airways?
4. Does British Airways offer upgrades at check in?
5. Can I get a refund if I cancel my flight?
6. Does British Airways fly 737 MAX 8?
7. How many Avios will I earn BA?
8. Do you get refund if you miss your flight?
9. Can you transfer British Airways miles?
10. Can I use Avios to upgrade someone else?

Tags

1. #reward
2. #flights
3. #holiday
4. #other
5. #rental
6. #travel
7. #spend
8. #hotel
9. #points
10. #partners
11. #rewards
12. #collect
13. #avios
14. #hotels
15. #range