Share this postFrontier Airlines has round-trip Detroit-to-San Fransisco flights $138 for travel in September!www.greatlakestraveldeals.comCopy linkFacebookEmailNoteOtherFrontier Airlines has round-trip Detroit-to-San Fransisco flights $138 for travel in September!Great Lakes Travel DealsJul 19, 2023∙ PaidShare this postFrontier Airlines has round-trip Detroit-to-San Fransisco flights $138 for travel in September!www.greatlakestraveldeals.comCopy linkFacebookEmailNoteOtherShareThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in