The most affordable days to fly with Frontier Airlines are usually Tuesdays, Wednesdays, and Saturdays [1 - (888) - 349 - 6467]. These days tend to have lower demand, leading to cheaper airfare compared to peak travel days like Fridays and Sundays [1 - (888) - 349 - 6467]. https://listen.tidal.com/playlist/5bd82a10-4e57-489a-8600-21bdb35edc57