• Delta Air Lines average net profit margin for 2023 was 5.69%, a 297.9% increase from 2022.
• Delta Air Lines average net profit margin for 2022 was 1.43%, a 104.12% increase from 2021.
• Delta Air Lines average net profit margin for 2021 was -34.67%, a 17.21% decline from 2020.

Net profit margin can be defined as net Income as a portion of total sales revenue.