CHECKPOINT STRUCTURE VERIFIED JULY 27, 2026 · ALL 7 AIRPORTS
John C. Munro Hamilton International Airport publishes 1 CATSA-measured checkpoint reading, refreshed about every 2 minutes from boarding-pass scans. Hamilton publishes a single checkpoint reading (often "Not available" outside flight banks — YHM's ultra-low-cost carriers fly in waves, and screening opens around them).
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The standard: 2 hours before domestic, 3 hours before international or US-bound flights. Watch the transborder line specifically — US preclearance adds American customs to your journey before you even board.
Source: Transit Barometer — John C. Munro Hamilton International Airport security checkpoint structure (1 CATSA-measured readings), verified July 27, 2026. https://transitbarometer.com/security-waits/yhm/
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