http://myquicktripshelp.zohodesk.com/portal/en/kb/articles/are-delta-basic-economy-award-tickets-refundable
http://myquicktripshelp.zohodesk.com/portal/en/kb/articles/what-are-the-rules-for-cancellation-of-flights
http://myquicktripshelp.zohodesk.com/portal/en/kb/articles/can-i-get-a-refund-for-my-basic-economy-fare-ticket
http://myquicktripshelp.zohodesk.com/portal/en/kb/articles/what-s-included-in-delta-basic-economy
http://myquicktripshelp.zohodesk.com/portal/en/kb/articles/which-delta-classes-are-refundable
