Travel Spiked seltzer at 35,000 feet: JetBlue Airways to start serving Truly hard seltzer November 7, 2019 Dawn Gilbertson, USA TODAY Comments 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.