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 Calgary and Winnipeg, 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 Calgary to Winnipeg are generally
Freedom Airlines,
Kish Airlines,
Air Canada,
Lan Airlines,
Westjet,
Air Canada Jazz,
KLM,
Virgin Atlantic,
Xiamen Airlines,
Delta Air Lines,
Qantas Airways
are companies.