Returning a car rental at the airport and forgot to fill the tank of gas? Make this as part of your itinerary when returning to Calgary International Airport, as it is the only convenient gas station located near the airport. Prices are as cheap as gas stations located further away which is an added bonus. It can be a bit difficult to find as it's located in the middle of nowhere and there is currently construction of some sort going around it now. But drive around until you find it and you'll be as glad as we were.