Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Coimbatore to Redmond as you normally would.
Related info for your journey
Useful info, stats and facts about Coimbatore to Redmond flights.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Coimbatore Peelamedu Airport to Bend/Redmond Airport flight would often be abbreviated as a CJB to RDM flight.