I was trying to book online two flights using swiss.com. Flight details: Iad-zrh, jul13, 2017, price usd552 Zrh-yvr, aug03, 2017, pirce usd254 At the end the grand total was usd806. Once I got to the check-out the price was raised with no explanation to usd1130.85. Customer service's answer was that this ticket is no longer available. Still, the system kept offering me that price. A grand total is suppose to be legally binding.