Rome2rio, a Melbourne-based travel search engine, has come up with the world's cheapest airlines after comparing nearly 1.2 million airfares from 312 airlines to determine each carrier’s average fare per kilometer.

The research revealed that Scoot, a Singapore-based carrier, was the world’s cheapest airline, charging an average of USD$0.07 per kilometer, followed by Russia’s Aeroflot and Australia’s Jetstar Airways.

See the full list below:

Ranking Airline Country Cost per km (USD)

1. Scoot Singapore $0.07

2. Aeroflot Russia $0.08

3. Jetstar Airways Australia $0.08

4. Tiger Airways Singapore $0.08

5. AirAsia Malaysia $0.09

6. Emirates UAE $0.09

7. Wizzair Hungary $0.10

8. Sri Lanka Sri Lanka $0.10

9. Singapore Airlines Singapore $0.10

10. Cathay Pacific Hong Kong $0.10

11. Virgin Australia Australia $0.10

12. Garuda Indonesia Indonesia $0.11

13. Ryanair Ireland $0.11

14. Saudi Airlines Saudi Arabia $0.12

15. Air India India $0.12

16. Royal Jordanian Jordan $0.13

17. Hong Kong Hong Kong $0.13

18. Thai Airways Thailand $0.13

19. Virgin America USA $0.14

20. Icelandair Iceland $0.14