exo · Sud-Ouest

exo (Sud-Ouest) operates 25 routes (17 bus, 8 other) in Greater Montréal with 506 stops and connects with STM, RTL and exo.

Routes and weekday frequency

Weekday midday frequency, by route

1 21–30
10 31–60
3 60+
11 no midday

Each route is judged by its slower direction. A dash means no sustained service in that period.

Bus routes (17)
Route	AM peak	Midday	PM peak	Evening	Overnight
1 Valleyfield - Beauharnois - Châteauguay - Montréal	Limited	every 63 min	every 55 min	every 97 min	Limited
20 Beauharnois	Limited	every 86 min	every 86 min	Limited	—
21 Châteauguay - Montréal	Limited	—	Limited	—	—
22 Châteauguay	Limited	—	Limited	—	—
23 Châteauguay - Montréal	Limited	—	Limited	Limited	—
24 Châteauguay	Limited	Limited	Limited	Limited	—
25 Châteauguay - Montréal	every 29 min	—	Limited	Limited	—
27 Châteauguay	Limited	—	Limited	Limited	—
28 Châteauguay - Montréal (Centre-Ville)	Limited	Limited	Limited	—	Limited
29 Châteauguay	Limited	—	Limited	—	—
31 Châteauguay - Montréal	every 40 min	every 42 min	every 46 min	every 40 min	Limited
32 Châteauguay - Montréal	every 39 min	every 42 min	every 44 min	every 40 min	—
33 Châteauguay	every 40 min	every 42 min	every 45 min	every 40 min	—
90 Cégep André-Laurendeau	Limited	—	Limited	—	—
98 Kahnawake - Montréal	Limited	Limited	every 65 min	every 50 min	—
111 Haut-Saint-Laurent	Limited	Limited	Limited	Limited	—
140 Mercier - Châteauguay - Mercier	every 60 min	every 83 min	every 84 min	Limited	—

Other routes (8)
Route	AM peak	Midday	PM peak	Evening	Overnight
T-1 Taxi Collectif - Léry	every 45 min	every 60 min	every 55 min	every 70 min	Limited
T-19 Taxi Collectif - Maple-Grove	every 45 min	every 60 min	every 58 min	every 59 min	Limited
T-20 Taxi Collectif - Beauharnois	every 40 min	every 58 min	every 60 min	Limited	Limited
T-22 Taxi Collectif - Des Musiciens	Limited	every 42 min	Limited	every 40 min	Limited
T-23 Taxi Collectif - Haute-Rivière	every 40 min	every 42 min	every 45 min	every 40 min	Limited
T-25 Taxi Collectif - Châteauguay Station	every 40 min	every 42 min	every 45 min	every 40 min	—
T-27 Taxi Collectif - Châteauguay Nord	Limited	every 42 min	Limited	every 40 min	Limited
T-29 Taxi Collectif - Industriel	Limited	every 22 min	Limited	every 22 min	Limited

Nearby agencies in Greater Montréal

Scheduled service, not live arrivals. Schedule refreshed Oct 12, 2026, valid through Jan 3, 2027. Atlas data release Oct 13, 2026. Official site: exo (Sud-Ouest).