When comparing Spirit Airlines vs Frontier Reddit, travelers share a mix of frustration, humor, and practical advice about flying with America’s two most popular ultra-low-cost carriers. Reddit discussions across communities like r/travel, r/frontierairlines, and r/spiritairlines show that both airlines deliver extremely cheap fares but come with trade-offs in comfort, service, and reliability. Many Redditors mention that Spirit Airlines has slightly improved in recent years, offering newer planes and more transparent fare options. Spirit’s “Big Front Seats” often get praise for being more comfortable than standard economy, and some users report smoother flights when expectations are set low and extras are prepaid online. Still, complaints about flight delays, customer service, and unexpected fees remain common themes.