Domestic often works with about 90–120 minutes; U.S. preclearance and long-haul international need more on morning Europe and afternoon U.S. banks.

CATSA can look short while U.S. CBP or international outbound passport control is the real constraint. Flight Plan construction, the closed multi-level garage, and seasonal peaks stretch curb-to-gate time—do not copy a pure-domestic buffer onto a New York or Paris departure.

After security you are locked into one zone. Wrong stream means exiting and re-clearing with fresh time risk.

Follow overhead Domestic / United States / International signs from check-in. Gate numbers alone are not enough—U.S. gates sit after CBP; international gates sit after Canada Border Services outbound processing.

Airside options are decent once you are through the correct stream; landside is mostly a pass-through.

U.S. post-CBP dining is thinner than domestic/international. If you need a real meal before a U.S. departure, eat before preclearance or accept grab-and-go after.

Live Priority Pass and LoungeKey cover Aspire (domestic + international), National Bank (international), and Air France/KLM (international, AF/KLM exclusive 15:30–18:30)—not Maple Leaf and not Desjardins.

Domestic Aspire is listed 14:00–22:00 on Priority Pass and LoungeKey (DragonPass currently lists 05:00–21:00 for the same Gate 1 room—use the hours in the app you will present). Desjardins Odyssey U.S. is DragonPass plus Odyssey cards, not Priority Pass. National Bank stays in the Gate 53 area through a reduced temporary room from 5 Oct 2026.