Getting to Canada: no visa needed, but check the passport rule for land and sea crossings
Canada is one of the simplest international trips for US citizens, with short flights and no visa — the only real planning questions are passport documents for land crossings and which airport fits your itinerary.
Canada is about as low-friction as international travel gets for US citizens — flights from most US cities run 1–5 hours, and many travelers drive across the border entirely.
Entry requirements by air versus by land
Flying into Canada, US citizens need a valid passport book; a passport card is not accepted for air travel but is accepted for land and sea border crossings, where a passport card is a cheaper and more durable alternative to the full passport book if you mainly plan to drive across. No visa is required for typical US tourist visits. Confirm current document requirements on the US State Department's Canada page before traveling, particularly if traveling with minors or by a less common crossing point, since documentation rules for accompanied children differ from those for adults.
Picking an airport
Toronto Pearson (YYZ), Vancouver (YVR) and Montreal (YUL) are the major gateways with the most US connections; for destinations like Banff or Jasper, flying into Calgary (YYC) is usually far more convenient than Vancouver despite Vancouver's larger international profile. Driving across a land border is often genuinely practical for trips to cities near the border — Toronto, Vancouver and Montreal are all within a reasonable drive of major US metro areas.
A note on cell service and currency
Your US phone plan may charge significant roaming fees in Canada even though the border crossing itself feels minor — check your carrier's Canada rates or pick up a Canadian eSIM before you go, since surprise roaming charges are one of the more common post-trip frustrations for Canada-bound travelers specifically because the trip otherwise feels so domestic.