Airport Christchurch Motel is a motel at 55 Roydvale Avenue in Burnside, Christchurch, rated 4.4 from 272 Google reviews. It is listed as a holiday park, but its website describes a motel about 5 minutes from Christchurch Airport and 10 minutes from the city centre. The website says it is not on a flight path.
The website describes units with cooking facilities, king or super-king beds, complimentary WiFi with limits and recent air-conditioning. An airport shuttle runs for flight arrivals and departures, from 7am to 8:30pm on weekdays and 8am to 8:30pm on weekends and public holidays, and does not run on some holidays. It also lists a park and fly service by arrangement for guests who book directly, with taxi options to the airport.
When choosing an airport motel, check shuttle hours against your flight times, whether parking is included and what the cancellation terms are. Book directly if you want park and fly. Ask about late arrival if your flight lands after the shuttle stops.
For a practical stay near the airport, Airport Christchurch Motel on Roydvale Avenue is a convenient base.