I would suggest to enjoy the spontaneity (and the excitement) out of the Mile High Club rarity which an Ohio airline is giving people who like to plan a chance to book one hour flights with a bottle of chanpagne and a box of chocolate as well as a discreet pilot for an affordable price. I believe $425 plus taxes and fees are reasonable and it would be worth for some couples.
www.flamingoair.netmile-high-club-romantic-flights