đ Public Transport near Ottawa Macdonald-Cartier International Airport
Ottawa ⢠Last updated 2025-08-18 UTC
đ OC Transpo
đ Visit WebsiteOC Transpo is Ottawaâs municipal public transit operator and provides multimodal service across the National Capital Region, including OâTrain light-rail lines and an extensive bus network. For Ottawa MacdonaldâCartier International Airport (YOW) OC Transpo provides a direct OâTrain link (Line 4) to the terminal, overnight/night-bus coverage, and bus replacement services when trains are not running.
đ Routes (3)
O-Train Line 4 (Airport Link)
đ TrainO-Train Line 4 (the Airport Link) is a short diesel light-rail line that provides a direct, frequent connection between Ottawa MacdonaldâCartier International Airport (Island Terminal/Departures level) and South Keys Station (connecting with Line 2). It serves Uplands (EY Centre area) between South Keys and the Airport and is designed for accessible, fast transfers to the broader OâTrain network.
R4 (Line 4 replacement bus service)
đ BusR4 is the designated replacement bus service that operates along the Line 4 corridor when OâTrain Line 4 is disrupted or out of service. R4 serves all Line 4 stations and provides a direct surface connection between South Keys, Uplands and the Airport to maintain continuity of service during rail outages or planned maintenance.
Route N98 (Night Route â Airport)
đ BusNight Route N98 provides overnight bus service to the Airport when OâTrain service is not running; it operates between the Airport and Hurdman (and is extended to Rideau when both Lines 1 and 4 are closed). N98 is part of OC Transpo's Night network and ensures 24-hour connectivity to/from YOW when rail service is closed for the night.
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