Is it cheaper to buy airline tickets together or separate?

Related questions

1. Are flights cheap in Europe?
2. When should I buy plane tickets to Europe?
3. Is it cheaper to fly or train in Europe?
4. When's the best time to buy international airline tickets?
5. Why Flight tickets are so expensive?
6. Is Japan expensive?
7. Is Europe cheaper in winter?
8. Which Scandinavian country is the cheapest?
9. Which is the most expensive country in Europe?
10. What is the cheapest month to fly international?

Tags

1. #together
2. #higher
3. #separately
4. #price
5. #advises
6. #everyone
7. #group
8. #buying
9. #right
10. #cheaper
11. #subset
12. #tickets
13. #reservation
14. #farecompare
15. #seats
16. #airline
17. #systems
18. #since
19. #could
20. #shopping