Booking
what is considered a domestic flight?
What counts as a domestic flight — and the US–Canada boundary worth knowing.
Quick answer
A domestic flight is one that departs and arrives within the same country — New York to Los Angeles, or Toronto to Vancouver, both count. Flights between the US and Canada are international, not domestic: passports and customs apply on both ends.
Why the definition matters in practice
Domestic status determines the rules you travel under: ID requirements, customs, and which fare markets you are shopping in. US domestic and Canada domestic are separate markets with different carriers and structures — that is why they are planned separately.
It also matters for connections: an itinerary mixing domestic and international legs follows the stricter international rules for documentation.
Related questions
Is Puerto Rico domestic for US flights?
Yes — flights between the US mainland and Puerto Rico are treated as domestic.
Is Toronto to Montreal domestic?
Yes — both cities are in Canada, so that is a Canada domestic flight.
What about New York to Toronto?
International — different countries, so passports and customs apply.
Related topics: flight booking help · domestic flight assistance