Some airlines may restrict you to one item of baggage, whereas others may limit you to hand luggage only. If you are only acting as an air courier on the outward flight you can usually check in baggage as normal on the return trip. British air courier companies use major airlines like British Airways and Virgin etc and other international airlines. You are treated the same as the other passengers in the 'tourist' section of the aircraft. These are ideal for Australians returning home after traveling abroad .
Prices depend on the season, but the discount is usually substantial.
Recent bargain fares for couriers have included trips to the Far East for as little as 200. During summer prices usually remain higher than at other times of year. When a courier is required urgently at short notice the fare may be lower, resulting in substantial savings. Reservations are made by telephone with the courier company and you pay at the time of booking. The ticket is collected at the airport on the day of the flight.