• Delta Air Lines average quick ratio for 2023 was 0.39, a 27.78% decline from 2022.
• Delta Air Lines average quick ratio for 2022 was 0.54, a 32.5% decline from 2021.
• Delta Air Lines average quick ratio for 2021 was 0.8, a 13.04% decline from 2020.

Quick ratio can be defined as a liquidity ratio that measures a company's ability to pay short-term obligations. It is calculated by subtracting inventory from current assets and dividing by current liabilities.