• A valid Canadian passport;
• A valid U.S. Merchant Mariner Document;
• A NEXUS Air card when used at a NEXUS Air kiosk; or
• A North Atlantic Treaty Organisation (NATO) identification card, when accompanied by current NATO orders.

Canadians entering or transiting the United States by air without appropriate documentation will be prevented from boarding their flight. Delays and unexpected financial expenses may also occur. Canadians should obtain the appropriate required documentation before leaving Canada. For detailed information contact Foreign Affairs and International Trade Canada.