CHDO-FM is a Canadian radio station that broadcasts airport and tourist information at 89.7 FM from the Montréal-Pierre Elliott Trudeau International Airport in Montreal, Quebec.
The station provides traffic and parking information to motorists en route to the airport.
Owned by Aéroports de Montréal with the airport as its licensee (as "Aeroports De Montreal Dorval"), the station was licenced in 2001.
The announcer is Leta Polson.
In October 2011, CHDO-FM was granted to move from 89.7 MHz to 88.1 MHz, particularly due to interference issues with Kahnawake's CKKI-FM on 89.9.
Coordinates: 45°27′29″N 73°44′58″W / 45.45806°N 73.74944°W