I am 100K Elite so free cancellations. I was booking another flight and noticed my already booked flight has dropped in price. With Southwest, I've had them update the reservation and give me the price difference back without issue. I'm curious if it's easy to do with Frontier or if I would need to cancel the entire reservation and rush to book it again? I figure if I book the second reservation (exact same date and time) first and then cancel the original reservation, it might cause a red flag in the system and if I then cancel the original reservation I might get stuck with no reservation at all.

Has another done this? What's the best way to do this? Is it worth it? Is it asking for problems?