Here are the 10 busiest airports in 2021 and how their ranking compared with pre-pandemic, and how their 2021 traffic compared with 2019 as well.
| 2021 Rank | 2019 Rank |
| Airport |
| 2021 Passengers | Vs. 2019 |
| 1 | 1 |
| Atlanta (ATL) |
| 75 704 760 | -32% |
| 2 | 10 |
| Dallas – Fort Worth (DFW) |
| 62 465 756 | -17% |
| 3 | 16 |
| Denver (DEN) |
| 58 828 552 | -15% |
| 4 | 6 |
| Chicago O’Hare (ORD) |
| 54 020 399 | -36% |
| 5 | 3 |
| Los Angeles (LAX) |
| 48 007 284 | -46% |
| 6 | 34 |
| Charlotte (CLT) |
| 43 302 230 | -13% |
| 7 | 31 |
| Orlando (MCO) |
| 40 351 068 | -20% |
| 8 | 11 |
| Guangzhou (CAN) |
| 40 259 401 | -45% |
| 9 | 24 |
| Changdu (CTU) |
| 40 117 496 | -28% |
| 10 | 30 |
| Las Vegas (LAS) |
| 39 754 366 | -23% |
Atlanta regained the title of World’s Busiest Airport, which is lost in 2020 to Guangzhou. China’s Covid suppression looked good to some observers until it stopped looking so good.
