Keyword number 2 . spirit flights
Keyword number 3 . flights
Keyword number 4 . southwest
Keyword number 5 . southwest airlines
Keyword number 6 . cheap airlines
Keyword number 7 . spirit airlines flight
Keyword number 8 . flight
Keyword number 9 . frontier
Keyword number 10 . frontier airlines
Keyword number 11 . american airlines
Keyword number 12 . american
Keyword number 13 . delta
Keyword number 14 . delta airlines
Keyword number 15 . cheap flights
Keyword number 16 . united airlines
Keyword number 17 . united
Keyword number 18 . jetblue
Keyword number 19 . spirit airlines number
Keyword number 20 . spirit airlines baggage
Keyword number 21 . spirit air
Keyword number 22 . spirit airlines tickets
Keyword number 23 . expedia
Keyword number 24 . airlines tickets
Keyword number 25 . spirit airline
