Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chiang Mai to Guayaquil as you normally would.
Related info for your journey
Useful info, stats and facts about Chiang Mai to Guayaquil flights.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chiang Mai Airport to Guayaquil Jose Joaquin de Olmedo Airport flight would often be abbreviated as a CNX to GYE flight.