57 & counting and (very) proud not to have flown Spirit!
1. American Airlines
2. Continental Airlines
3. US Airways
4. Delta Airlines
5. United Airlines
6. Jetblue
7. Southwest
8. Northwest Airlines
9. AirTran
10. ATA
11. Virgin America
12. Hawaiian Airlines
13. Carnival Airlines
14. AeroMexico
15. British Airways
16. Virgin Atlantic
17. Iberia
18. Lufthansa
19. Swiss Airlines
20. Alitalia
21. Air France
22. Meridiana
23. Turkish Airlines
24. KLM
25. FLY LAL (Lithuanian Airlines)
26. Czech Air
27. Singapore Airlines
28. Air India
29. Jet Airways
30. Cathay Pacific
31. Korean Airlines
32. Dragon Air
33. Air China
34. China Eastern
35. Sri Lankan
36. Jetstar
37. Jetstar Asia
38. Air Asia
39. Air Asia X
40. Malaysia Airlines
41. Thai Airways
42. Bangkok Airlines
43. Garuda Indonesia
44. Etihad
45. Emirates
46. Royal Jordanian
47. El Al
48. IsraAir
49. Qantas
50. Virgin Australia
51. Virgin Blue
52. Tiger Air
53. Air New Zealand
54. Air Tahiti
55. Air Tahiti Nui
56. Air Seychelles
57. BMI