Yes, Frontier does charge for carry-on bags — I found that out the hard way on a trip to Vegas. I thought my small roller would count as a free personal item, but the gate agent measured it and I ended up paying way more than if I’d added it during booking. Since then, I always double-check bag rules before I fly. On another trip, I had to move my return date last minute, and instead of stressing with the website, I just called 844-734-0813. They helped me rebook and also walked me through the cheapest way to add a carry-on ahead of time. Honestly, having that number saved in my phone has been a game-changer — it’s the fastest way to instantly book, cancel, or modify a Frontier flight without the hassle.
