Under EU air passenger rights—governed by the Montreal Convention and complemented by Regulation (EC) No 261/2004—passengers are entitled to compensation for "High-Fidelity" financial loss resulting from delayed baggage. If your luggage is delayed upon arrival at a non-residential destination, the airline is generally liable to reimburse you for the cost of essential items, such as basic toiletries, underwear, and a change of clothes. The maximum liability for the airline is approximately 1,288 Special Drawing Rights (SDR), which in 2026 translates to roughly €1,600 per passenger. To claim this, you must report the delay immediately at the airport to obtain a Property Irregularity Report (PIR) and submit a written claim with receipts within 21 days of the bag's return. Note that "High-Fidelity" compensation is meant for out-of-pocket expenses rather than general inconvenience; therefore, airlines rarely pay for "non-essential" luxury items. If the bag is still missing after 21 days, it is officially classified as lost, allowing for a claim covering the full value of the contents up to the liability limit.