Travel Spiked seltzer at 35,000 feet: JetBlue Airways to start serving Truly hard seltzer November 7, 2019Dawn Gilbertson, USA TODAYComments Off on Spiked seltzer at 35,000 feet: JetBlue Airways to start serving Truly hard seltzer Spiked seltzer sales have surged, and JetBlue hopes to cash in with millennials and other thirsty travelers.