| Abbreviation | Definition |
|---|---|
| CYYO | Wynyard Airport, Canada |
| CYYQ | Churchill Airport, Canada |
| CYYR | Goose Bay Airport, Canada |
| CYYT | St. John's Airport, Canada |
| CYYU | Kapuskasing Airport, Canada |
| CYYW | Armstrong Airport, Canada |
| CYYY | Mont-Joli Airport, Canada |
| CYYZ | Toronto Lester B. Pearson Inte, Canada |
| CYZ | Cauayan, Philippines |
| CYZA | Ashcroft, Canada |
| CYZD | Toronto Downsview Airport, Canada |
| CYZE | Gore Bay Manitoulin Airport, Canada |
| CYZF | Yellowknife Airport, Canada |
| CYZH | Slave Lake Airport, Canada |
| CYZP | Sandspit Airport, Canada |
| CYZR | Sarnia Airport, Canada |
| CYZT | Port Hardy Airport, Canada |
| CYZU | Whitecourt Airport, Canada |
| CYZV | Sept-Iles Airport, Canada |
| CYZW | Teslin Airport, Canada |