Luggage fees However, if you simply cannot do without your checked luggage, try to pay for the bag online, as it is typically much cheaper to purchase your bag on the airline's website rather than pay up front at the check-in counter.

Yes, it is almost universally cheaper to purchase checked bags online in advance rather than at the airport counter or gate. In 2026, most airlines—including major carriers like Delta and budget lines like Frontier—charge 20% to 50% more for bags added during airport check-in. For example, a bag that costs $35 when booked online might spike to $60 or more at the airport. Many airlines now utilize tiered pricing, where the lowest rate is locked in at the time of ticket purchase, with prices increasing as the departure date nears. Buying your allowance at least 24 hours before your flight is a critical strategy to avoid "convenience fees" applied by staff at the terminal.