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CAP 4 Ontario
| ICAO | Airport | ICAO | Airport |
| CKB6 | Angling lake / Wapakeka | CNP3 | Anrprior / South Renfrew Muni |
| CYIB | Atikokan Muni | CNB9 | Barrie - Orillia (Lake Simcoe) |
| CPF2 | Bar River | CNE3 | Bearskin lake |
| CYTL | Big Trout Lake | CNC3 | Brampton |
| CYFD | Brantford | CNL3 | Brockville - Thousand Islands |
| CZBA | Burlington airpark | CYAC | Cat Lake |
| CYCE | Centralia / Huron airpark | CYLD | Chapleau |
| CNZ3 | Chatham - Kent | CYCN | Cochrane |
| CNY3 | Collingwood | CYCC | Cornwall regional |
| CYVZ | Deer Lake | CYHD | Dryden regional |
| CYXR | Earlton (Timiskaming regional) | CYEL | Elliot Lake municipal |
| CYAG | Fort Frances municipal | CYGQ | Gerladton (Greenstone regional) |
| CYGD | Goderich | CYZE | Gore Bay - Manitoulin |
| CNZ8 | Grimsby airpark | CYHM | Hamilton |
| CPN4 | Hanover / Saugeen municipal | CYHF | Hearst (Réne Fontaine) |
| CYHN | Hornepayne municipal | CNE4 | Eurquois falls |
| CYYU | Kapuskasing | CYAQ | Kasabonika |
| CYQK | Kenora | CNS7 | Kincardine |
| CNE5 | Kingfisher Lake | CYGK | Kingston |
| CYKX | Kirkland Lake | CYKF | Kitchener / Waterloo regional |
| CLM2 | Leamington | CNF4 | Lindsay |
| CYXU | London | CYMG | Manitouwadge |
| CYME | Manitouaning / Manitoulin east minucipal | CYSP | Marathon |
| CYEE | Midland / Huronia | CYMO | Mooseonee |
| CYQA | Muskoka | CZMD | Muscrat Dam |
| CYQN | Nakina | CYYB | North Bay |
| CYOO | Oshawa | CYRP | Ottawa / Carp |
| CYOW | Ottawa MacDonald-Cartier International | CYOS | Owen Sound / Billy Bishop |
| CNK4 | Parry Sound area municipal | CYPT | Pelee Island |
| CYTA | Pembroke | CYPQ | Peterboruogh |
| CYPL | Pickle lake | CYPM | Pikangikum |
| CPV7 | Poplar Hill | CYRL | Red Lake |
| CZRJ | Round Lake (Weagamow lake) | CYSN | St. Catherines / Niagara district |
| CYQS | St. Thomas municipal | CZSJ | Sandy Lake |
| CYZR | Sarnia (Chris Hadfeild) | CYAM |
Sault Ste. Marie |
| CYXL | Sioux Lookout | CKD9 | Slate Falls |
| CYSH | Smith Falls - Montague (Russ Beach) | CNA3 | Springwater (Barry airpark) |
| CNM4 | Startford municipal | CYSB | Sudbury |
| CYTJ | Terrace Bay | CYQT | Thunder Bay |
| CNQ4 | Tillsonburg | CYTS | Timmins |
| CYKZ | Toronto / Butonville municipal | CYTZ | Toronto / City Centre |
| CYZD | Toronto / Downsview | ||
| CYYZ-STAR | Toronto Lester B. Pearson - STARs | CYYZ-IAP | Toronto Lester B. Pearson - Instrument Approaches |
| CYYZ-SID | Toronto Lester B. Pearson - SIDs / Noise abatement procedures | CYYZ-AD | Toronto Lester B. Pearson - Aerodrome charts |
| CYTR | Trenton (Mil.) | CYXZ | Wawa |
| CNQ3 | Welland | CYVV | Wiarton |
| CYQG | Windsor | CKL3 | Wunnumin Lake |