The Smiths Falls-Montague (Russ Beach) Airport (ICAO identifier CYSH) is a registered aerodrome located in Montague Township approximately 6.5 km (3.5 nautical miles) east of the town of Smiths Falls. The airport is located in Class E uncontrolled airspace with an Aerodrome Traffic Frequency UNICOM 122.7 MHz and ARCAL Type K aerodrome lighting on 122.9 MHz. Runway 06/24 is paved asphalt 3,998 feet long by 75 feet wide. Each runway end is served by an RNAV (GNSS) instrument approach procedure published in the Restricted Canada Air Pilot (RCAP).

The airport is owned by Montague Township and the Town of Smiths Falls and operated by volunteers who are members of the Smiths Falls Flying Club. The Club operates a flight training unit with three Cessna 172M aeroplanes. There is 100LL avgas available via a self-serve credit card system. There are no landing fees, and no tie-down fees for stays less than 30 days.

Yearly Fly-in Breakfast

The Smiths Falls Flying Club holds a fly-in breakfast each year either the last Sunday in May or the first Sunday in June.