KL661
2,040 recorded sectors across 7 years, operated by KLM Royal Dutch Airlines.
Flown as AMS–IAH, AMS–AUS, AUS–IAH, AMS–DFW, AMS–MEM, DFW–IAH, MEM–IAH. More than one sector means either a multi-stop service or a route that changed over the years.
Years held
| Year | Sectors | Range |
|---|---|---|
| 2026 | 213 | 1 Jan – 1 Aug |
| 2025 | 369 | 1 Jan – 31 Dec |
| 2024 | 366 | 1 Jan – 31 Dec |
| 2023 | 361 | 1 Jan – 30 Dec |
| 2022 | 315 | 1 Jan – 31 Dec |
| 2021 | 341 | 1 Jan – 30 Dec |
| 2020 | 75 | 16 Oct – 31 Dec |