The boarding gates in Terminal 1 are divided into three main concourses: D gates (domestic), E gates (international), and F gates (transborder flights to the United States). ### Terminal 3 Terminal 3 serves WestJet, airlines belonging to the SkyTeam and Oneworld alliances, and various other charter and international carriers. Similar to Terminal 1, Terminal 3 is organized by levels: * **Arrivals Level:** Baggage claim and ground transportation pickup zones. * **Departures Level:** Check-in counters, security checkpoints, and departures gates. The boarding gates in Terminal 3 are categorized as A gates (primarily US transborder flights), B gates (domestic flights), and C gates (international flights). ## Inter-Terminal Transit: The Terminal Link Train

Passengers transferring between Terminal 1 and Terminal 3, or accessing the airport's remote parking facilities, can use the Terminal Link Train. This automated people mover is free, fully wheelchair accessible, and operates 24 hours a day, seven days a week. During peak travel times, the train runs every few minutes. The transit system services three primary stations: 1. **Terminal 1 Station:** Located on the retail level (Level 5) of the Terminal 1 parking garage. 2. **Terminal 3 Station:** Located adjacent to the Terminal 3 parking garage and pedestrian bridge. 3. **Viscount Station:** Serves the Value Park Lot, Value Park Garage, and select off-site airport hotel shuttle pick-up areas. To find the train, follow the overhead "Link Train" signage located throughout the arrivals and departures areas of both terminals. ## Ground Transportation and Transit to Downtown Toronto

Toronto Pearson Airport offers multiple transit connections to downtown Toronto and the surrounding Greater Toronto Area (GTA). ### Union Pearson (UP) Express The UP Express is a dedicated rail link that runs directly between Terminal 1 and Union Station in downtown Toronto. The journey takes approximately 25 minutes, with intermediate stops at Weston and Bloor stations. * **Location:** The UP Express station is located in Terminal 1, directly adjacent to the Terminal Link Train station. * **Access from Terminal 3:** Passengers arriving at Terminal 3 must take the free Terminal Link Train to Terminal 1 to board the UP Express. ### Public Transit Buses Several public transit systems service Toronto Pearson, with bus stops located at the ground level of both Terminal 1 and Terminal 3: * **TTC (Toronto Transit Commission):** Offers express and local bus services connecting the airport to the Toronto subway network. * **GO Transit:** Provides regional bus connections to various municipalities across the Greater Toronto Area. * **MiWay and Brampton Transit:** Offer local bus services to Mississauga and Brampton, respectively. ### Taxis, Limousines, and Rideshares Designated pickup zones for taxis, airport limousines, and app-based rideshare services are located outside the arrivals level of both terminals. Travelers should follow the indoor directional signs to the designated columns on the curb for authorized pickup.

## Security, Customs, and US Preclearance Navigating security and customs at Toronto Pearson depends on your destination and whether you are arriving on an international flight. ### US Transborder Preclearance Toronto Pearson is one of the select international airports offering US Customs and Border Protection (CBP) Preclearance. This allows passengers flying to the United States to clear US customs and immigration before boarding their flight in Toronto. Once you land in the US, you arrive as a domestic passenger, bypassing customs lines at your destination. Preclearance facilities are located in both Terminal 1 and Terminal 3. ### Connecting Flights If you are connecting between flights at Pearson, follow the purple "Connections" signs immediately upon exiting your aircraft. The connection process varies depending on your origin and destination: * **Domestic to International:** Typically does not require clearing security again if you remain within the secure departures area of the same terminal. * **International to Domestic:** Generally requires passing through Canadian customs, collecting checked baggage, and re-clearing security before proceeding to your domestic gate.