The Kaiapoi service had 2380 passengers in May, while the Rangiora service had well over 3816 passengers in May and 3382 in June.
Waimakariri mayor Dan Gordon was a regular user of ECan's bus service.
"I use it myself when heading into Christchurch in the morning for regular council-related meetings and it's fast, convenient, affordable and on time - all things that a great bus service should be.
"It's great to see growth in the service from Kaiapoi and generally to see that more residents are using bus services.
"For anyone who commutes to Christchurch for work, I'd strongly encourage you to give this service a go."
All other Waimakariri services have also shown an increase in patronage since half-price fares were introduced in April, the ECan spokesperson said.
Overall bus patronage for Greater Christchurch for the year to June 2022 was 8.7 million boardings, which was just two-thirds of pre-Covid service levels.
In contrast, the MyWay bus service in Timaru has enjoyed patronage at 5.6 per cent higher than pre-Covid levels, which will be good news for advocates hoping to bring the service to Waimakariri.
Last month, MyWay recorded its second highest number of rides in a day with 614, while daily average rides ranged from 490 to 580.
Similar on-demand trials in Greater Christchurch were being considered as part of ECan's long term plan and the Canterbury Regional Public Transport Plan, the ECan spokesman said.