Canadians keep flying — just not to the United States

Methodology. Each sector's 12-month rolling total is the sum of the 12 most recent monthly screened-passenger counts at Canada's eight largest airports (Calgary, Edmonton, Halifax, Montréal-Trudeau, Ottawa, Toronto Pearson, Vancouver, Winnipeg). Rolling sums remove seasonality — the same month a year apart always contributes to both the current and prior window. The index anchors December 2024's rolling window at 100, so every subsequent month shows the percentage change since then. Data are Statistics Canada table 23-10-0312 (Screened passenger traffic at the largest airports in Canada), released monthly with a roughly four-week lag. The tracker re-downloads the full CSV on every refresh cycle, cross-checks every historical value against a reference array, and aborts if any value mismatches. Source vectors: Domestic v1573797667 · Transborder v1573797668 · Other International v1573797669.