Supermarket customers in France can add airline tickets to their shopping lists thanks to a unique promotion by a budget airline. For a limited time Transavia France is offering cheap flights with packets of crisps, gummy bears and cereal bars at participating shops. Customers who buy one of the products before the #SnackHolidays promotion ends on April 21 will find a voucher code that can be redeemed online for a discounted flight to one of three destinations within Europe. Scroll down for video . Transavia France is selling cheap flights with packets of crisps, bags of gummy bears and cereal bars . Each package contains a voucher that can be redeemed for a discounted flight to one of three destinations . Billed as ‘the first snacks with airline tickets’ promotion, the products are being sold at participating Carrefour City shops, in Selecta vending machines at two Paris metro stations, and at an Mk2 cinema in Paris. Once customers enter a code on SnackHolidays.com they can book one-way flights to Barcelona (€35), Dublin (€40) or Lisbon (€40) with guaranteed prices, for travel between June 1 and October 24. Customers who purchase the products will find vouchers for cheap flights to Barcelona, Lisbon or Dublin . Passengers can already fly to Dublin from Paris Orly Airport from €40, even without a voucher code . According to the fine print, passengers must pay a booking fee on top of the airfare cost, and fees  for any checked baggage. A quick scan of Transavia’s website found that the savings with a voucher code from one of the packages would mostly be minimal, depending on the day of the flight. Passengers can already fly from Paris Orly Airport to Barcelona from €35 to €65, to Dublin from €40 to €60, and to Lisbon for €40 to €120 on most days of the week between June 1 and October 24. The snacks are being sold at participating Carrefour City shops, in vending machines and at a cinema . The campaign was supposed to launch last month but was delayed due to the crash of Germanwings flight 4U9525 in the Alps, French media reported. This is not the first time Transavia France has launched a marketing stunt like this. They previously offered discounted airline tickets in exchange for  unwanted Christmas gifts. Based at Paris Orly Airport, Transavia France launched in 2007 and is a low-cost subsidiary of Air France-KLM.
Transavia France has included voucher codes with the branded products . Customers can enter the codes online to receive a discounted flight . The codes can be redeemed for flights to Barcelona, Lisbon and Dublin . Products are being sold at  shops, a cinema and in two vending machines . Passengers still have to pay a booking fee and checked baggage fees .