Https://www.tackleunderground.com/community/topic/112010-%E3%80%90%EF%BB%BFspirit-airlines%E3%80%911-%EF%BC%98%EF%BC%95%EF%BC%95-%EF%BC%92%EF%BC%96%EF%BC%94-%EF%BC%97%EF%BC%90%EF%BC%92%EF%BC%97%C2%BFwhat-days-are-spirit-discounts/ https://www.tackleunderground.com/community/topic/112010-%E3%80%90%EF%BB%BFspirit-airlines%E3%80%911-%EF%BC%98%EF%BC%95%EF%BC%95-%EF%BC%92%EF%BC%96%EF%BC%94-%EF%BC%97%EF%BC%90%EF%BC%92%EF%BC%97%C2%BFwhat-days-are-spirit-discounts/