For both domestic and international travel to Canada in 2026, Tuesday and Wednesday are consistently the best days to fly. These mid-week days typically offer the lowest airfares and the lightest crowds at major hubs like Toronto Pearson (YYZ) and Vancouver (YVR). Conversely, Friday and Sunday are the busiest and most expensive days due to weekend travelers and business flyers. If you are looking for a "weekend" trip, experts suggest flying on a Saturday and returning on a Tuesday, which often bypasses the peak Monday morning rush. Seasonally, January and February are the cheapest months to visit (though very cold), while September offers a "sweet spot" of mild weather, stunning fall foliage, and significantly lower prices than the peak July-August summer window. Booking your flights 31 to 45 days in advance for domestic routes or 4 to 5 months for international trips further maximizes savings and seat selection.