| XRR | CYDM | Ross River Airport | Ross River | |
| - | CFX7 | Round Hill | Round Hill | |
| - | CJW5 | Russell | Russell | |
| YSA | - | Sable Island Airport | Sable Island | |
| YSV | - | Saglek Airport | Saglek | |
| YJN | CYJN | Saint Jean Airport | Saint Jean | |
| YSN | CZAM | Salmon Arm Airport | Salmon Arm | |
| - | CJY4 | Sandy Bay | Sandy Bay | |
| YSI | - | Sans Souci Airport | Sans Souci | |
| - | CPN4 | Saugeen Municipal | Hanover | |
| - | CBA7 | Scar Creek | Scar Creek | |
| - | CKK3 | Scobey Border Station | Coronach | |
| - | CAW3 | Scum Lake | Scum Lake | |
| ZSW | - | Seal Cove Airport | Prince Rupert | |
| YHS | CAP3 | Sechelt Airport | Sechelt | |
| - | CTK2 | Senneterre | Senneterre | |
| - | CCM3 | Sevogle | Sevogle | |
| - | CJC5 | Shaunavon | Shaunavon | |
| YAW | CYAW | Shearwater Airport | Halifax | |
| YSX | - | Shearwater Seaplane Base | Bella Bella | |
| - | CFS7 | Sheldon Lake | Sheldon Lake | |
| - | CJZ4 | Shellbrook | Shellbrook | |
| - | CFK7 | Sherman Meadows | Sherman Meadows | |
| YLO | - | Shilo Airport | Shilo | |
| SYF | - | Silva Bay Airport | Silva Bay | |
| - | CFQ5 | Silver City | Silver City | |
| ZAA | - | Silver City Seaplane Base | Alice Arm | |
| - | CKM2 | Sioux Narrows | Sioux Narrows | |
| YXF | - | Snake River Airport | Snake River | |
| - | CEV9 | Snare River | Snare River | |
| - | CJE4 | Snow Lake | Snow Lake | |
| - | CKC8 | Somerset | Somerset | |
| - | CSY3 | Sorel | Sorel | |
| - | CJX5 | Souris | Souris | |
| - | CEH4 | South Calgary Airport | De Winton | |
| ZMH | CZML | South Cariboo Regional Airport | 108 Mile Ranch | |
| YWF | - | South End Heliport | Halifax | |
| - | CNP3 | South Renfrew Municipal | Arnprior | |
| - | CPE6 | South River | Sunridge | |
| ZFL | - | South Trout Lake Airport | South Trout Lake | |
| YPG | CYPG | Southport Airport | Portage La Prarie | |
| - | CYSW | Sparwood/Elk Valley | Sparwood | |
| - | CFS5 | Spirit River | Spirit River | |
| - | CKH7 | Spiritwood | Spiritwood | |
| - | CYBW | Springbank Airport | Calgary | |
| - | CCD2 | Springdale | Springdale | |
| - | CAQ4 | Springhouse Airpark | Springhouse | |
| YSE | CYSE | Squamish Airport | Squamish | |
| - | CKQ2 | Squaw Rapids | Squaw Rapids | |
| YSZ | - | Squirrel Cove Seaplane Base | Squirrel Cove | |