While purchasing the first ticket, you can mark the Return button, or after purchasing one-way, you can re-enter the system and purchase the return tickets by examining the reverse route sign with the reverse route sign.
When you search for flights between Chongqing and Hangzhou, all active companies and flight times on the date you entered are listed. You can find the cheapest flight tickets by sorting this list by price.
The most frequently used airline companies from Chongqing to Hangzhou are generally
Air Macau,
Deer Jet,
Chongqing Airlines,
Eurofly,
China Eastern Airlines,
Sichuan Airlines,
Northeastern Airlines,
Air China,
Hainan Airlines,
Shenzhen Airlines,
Xiamen Airlines,
Tianjin Airlines
are companies.