Quebec City is a pedestrian-friendly city, and most of the attractions are within walking distance. You can also use public transportation such as buses and trains, which are affordable and convenient. A taxi ride from the airport to the downtown area takes around 30 minutes and costs around $35-40.
If you have more time, you can visit other attractions such as the Citadel, the Quebec City Museum, and the Petit-Champlain district. If you have less time, you can skip some of the attractions and focus on the ones that interest you the most. Also, make sure to pack comfortable shoes as there is a lot of walking involved.
Quebec City is served by the Jean Lesage International Airport (YQB), located just 11 kilometers from the city center. It is the second-busiest airport in Quebec and is well-connected to major cities in North America and Europe.