Here’s a concise overview of what Frontier Airlines charges for baggage:
A personal item (e.g., a small backpack or purse) is included free with your fare.
A carry-on bag (size up to 10″D × 16″W × 24″H, max weight 35lb) must be purchased and the fee varies by route and timing (e.g., booking early vs at the airport).
A checked bag (size limit 62 linear inches, typically up to 40-50lb) also has variable fees. Checked baggage fees differ based on when you buy and the route taken.
Overweight (41-50lb, 51-100lb) and oversized bags (63-110 linear inches) incur additional charges (for example $75–$100 for overweight).
If you tell me the specific route or fare class, I can check the exact current fee for you.