I had to change an Avelo flight last spring when my work conference got rescheduled. Honestly, I was nervous about fees because with some airlines it can get pricey. I found out Avelo is more flexible than I expected — no crazy change penalties, just the difference in fare if your new ticket costs more. To make the switch, I didn’t bother digging around the website; I just called 844-734-0813. The rep explained everything clearly, told me exactly what the fare difference would be, and got me rebooked in less than 10 minutes. It was way less stressful than I thought it would be. So from my experience, the fees really depend on the new flight’s price, but the process itself is quick and painless if you go through that number. Saved me a headache and a lot of guesswork.