For international flights from Canada, plan to be at the airport about three hours before departure; for domestic and US flights, about two hours. Airlines set their own check-in cut-off, often 60 minutes or more before departure for international flights, but the cut-off is the last moment, not the time to aim for.
Why three hours
- Check-in lines for international flights are longer because staff check passports, visas and entry forms.
- Security can take 20 minutes on a quiet morning and much longer at peak times such as Friday evenings and holiday weekends.
- Border control for US flights at some Canadian airports adds a separate step before the gate.
Things that call for extra time
- Holiday travel: Christmas week, March break and the start of summer are the busiest. Add an hour.
- Checking a bag: if you must check a bag, use online check-in and the bag-drop line if there is one.
- Travelling with children, medical items or a pet: allow more for screening and boarding.
- Airport changes: if parking, a shuttle or a train link is part of your trip, plan for delays there.
How to move faster
- Check in online and download your boarding pass before you leave home.
- Pack liquids in 100 ml containers inside one clear bag, and keep your laptop and large electronics easy to reach if the airport asks you to take them out.
- Keep your passport, boarding pass and any entry forms together.
- Check the departure gate on the airline app. Gates change.
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Common questions
Is two hours enough for an international flight from Canada?
Sometimes, on a quiet day with only carry-on bags, but it leaves little room. Three hours is the safer rule.
When does check-in close?
It depends on the airline and airport, and international cut-offs are usually earlier than domestic ones. Your booking confirmation or the airline's website shows the time for your flight.
What if I'm late?
Go to the airline's counter right away. Some airlines can still check you in or rebook you, but you may pay a fee, and a missed flight on a basic fare may not be refundable.
Sources
Checked November 10, 2026. Rules, prices and opening hours change, so confirm before you travel.