Share this postSpirit Airlines has round-trip Detroit-to-Philadelphia flights at $68 for travel in August and September!www.greatlakestraveldeals.comCopy linkFacebookEmailNoteOtherSpirit Airlines has round-trip Detroit-to-Philadelphia flights at $68 for travel in August and September!Great Lakes Travel DealsJul 06, 2023∙ PaidShare this postSpirit Airlines has round-trip Detroit-to-Philadelphia flights at $68 for travel in August and September!www.greatlakestraveldeals.comCopy linkFacebookEmailNoteOtherShareThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in