Airports 401 to 450
![Seaplane base seaplane base marker](/images/maps/seaplane-base-marker.png)
Orillia/Matchedash Lake Seaplane Base
![Seaplane base seaplane base marker](/images/maps/seaplane-base-marker.png)
Black Donald Lake Seaplane Base
![Regional airport medium airport marker](/images/maps/medium-airport-marker.png)
Houghton County Memorial Airport
![Closed airport closed airport marker](/images/maps/closed-airport-marker.png)
St. André-Avellin (Old Aerodrome)
![Heliport heliport marker](/images/maps/heliport-marker.png)
North Michigan Hospitals Inc Heliport
![Small airport small airport marker](/images/maps/small-airport-marker.png)
St. André-Avellin Aerodrome
![Regional airport medium airport marker](/images/maps/medium-airport-marker.png)
Marquette/Sawyer International Airport
![Seaplane base seaplane base marker](/images/maps/seaplane-base-marker.png)
Orillia/Lake St John Seaplane Base
![Regional airport medium airport marker](/images/maps/medium-airport-marker.png)
Ottawa / Gatineau Airport
![Small airport small airport marker](/images/maps/small-airport-marker.png)