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 Edmonton and Calgary, 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 Edmonton to Calgary are generally
Lufthansa,
JSC Aviaprad,
Air North,
Air Canada,
Lan Airlines,
Virgin Atlantic,
Central Mountain Air,
Sunwing Airlines,
KLM,
Qantas Airways,
Westjet,
Canadian North,
Air Canada Jazz,
Delta Air Lines
are companies.