Pearson International Airport (YYZ) is 22 km northwest of downtown. UP Express runs from Pearson directly to Union Station in 25 minutes, every 15 minutes, fully accessible (low-floor trains, step-free, room for strollers). Adult $12.35 walk-up / $9.25 with Presto / youth + post-secondary save 40% off adult with Presto / kids 12 and under ride free. Cheaper than a taxi (~$60), faster than transit (which takes 60+ minutes via the 192 Airport Rocket bus to Kipling station then Line 2 + Line 1). UP Express is the obvious move with kids.
Billy Bishop Toronto City Airport (YTZ) is on the Toronto Islands — accessible via a 90-second pedestrian tunnel from the foot of Bathurst Street (and a free shuttle bus from the tunnel to the city, or a free ferry as backup). Porter Airlines runs flights from US northeast cities (Boston, New York LGA, Newark, Chicago, Washington DC). The ferry / tunnel is the kid moment. Free for passengers. Faster than Pearson on arrival — you're at the foot of downtown 10 minutes after deplaning.
TTC (Toronto Transit Commission) runs the subway (Line 1 Yonge-University, Line 2 Bloor-Danforth, Line 4 Sheppard, and the Line 5 Eglinton Crosstown LRT, which opened 8 February 2026), streetcars (510 + 501 + 504 + 505 + others), and buses. Single fare is $3.30 (2026), bought via Presto card (tap to enter; reload at any subway station or via app) or contactless credit card. Kids under 12 ride free with a paying adult — a major family-of-4 transit win that's not in older guidebooks. Monthly fare capping starts September 1 2026 — the system will automatically cap your weekly + monthly total at the equivalent of a Metropass.
Weekend subway closures are a real Toronto thing. The TTC frequently closes large sections of Line 1 or Line 2 on weekends for maintenance. Check ttc.ca before banking on a subway route on a Saturday — shuttle buses run during closures but they're slower and stroller-unfriendly.
Streetcars look toy-like and are real. They run in mixed traffic on most routes, which means they're slow on weekend afternoons. They have low-floor accessible cars now (not the old high-floor ones). Strollers fit on the floor; wide-wheel jogging strollers will fit but you'll be the family blocking the aisle.
Don't rent a car downtown. Parking is $30-60/night at most hotels and $5-10/hour on the street. Streetcars don't yield (it's actually illegal to pass a streetcar on its right when doors are open — you'll watch tourists honk and locals laugh). The downtown is 1.5 km square — walk + TTC works.
Rent for the Niagara day, or the Toronto Zoo day, or a multi-day road trip. Daily rentals around $50-90 CAD from the airport or downtown branches.
Black cabs (Beck Taxi, Crown Taxi most common), Uber, Lyft all operate. Uber is usually 20-30% cheaper than taxi at the airport; both cost about $50-60 from Pearson to downtown without traffic (an hour+ during rush hour, so UP Express still wins on time).
Cross-border driving from the US: Pearson + Buffalo Niagara + Detroit-Windsor are the three options. From Buffalo, the Peace Bridge or the Rainbow Bridge (at Niagara Falls) work for kids — about 90 minutes from Buffalo to downtown Toronto. From Detroit, the Ambassador Bridge or the Detroit-Windsor Tunnel — about 4 hours to Toronto. The new Gordie Howe International Bridge between Detroit and Windsor is opening in spring 2026 with a pedestrian path — first new Detroit-Windsor crossing in nearly a century.
Cross-border with kids: adults need a passport, NEXUS, or Enhanced Driver's Licence (some US states issue these). Kids under 16 don't need a passport for the LAND crossing — a birth certificate (original or certified copy, not a photocopy) works. This is different from the air-travel rule, which requires a passport for every traveller. If your kid might fly back from Canada for any reason, bring the passport regardless. Wait times at land crossings: 10-30 min normal, 60+ on summer weekend mornings. Live wait times at cbsa-asfc.gc.ca/bwt-taf.
Pearson preclearance for US-bound flights — US Customs and Border Protection runs a preclearance facility in Terminal 1. You clear US immigration and customs in Toronto, then board your US-bound flight as a "domestic" passenger and arrive in the US with no further checks. Saves 30-60 minutes on the US side. Worth knowing for the flight home.