Additional information: How to use your eVoucher When you're ready to book, using your eVoucher couldn't be easier. 1. Find flights on ba.com 2. Review your booking and enter your eVoucher details 3. See your updated total and continue to payment Where will your eVoucher take you? You can use your eVoucher on flights to any destination, whenever you’re ready. Discover our outstanding fares and let your eVoucher take you further for less.