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