WK12
178 recorded sectors across 3 years, operated by Edelweiss Air.
Flown as LIR–ZRH, ZRH–SJO. More than one sector means either a multi-stop service or a route that changed over the years.
Years held
| Year | Sectors | Range |
|---|---|---|
| 2023 | 48 | 1 Jan – 22 Mar |
| 2022 | 120 | 2 Jan – 28 Dec |
| 2021 | 10 | 28 Nov – 26 Dec |