We've actually just recently added that exact feature (though we're short on South American inventory at the moment): http://adioso.com/nl/amsterdam-to-north-am

We've actually just recently added that exact feature (though we're short on South American inventory at the moment): http://adioso.com/nl/amsterdam-to-north-america http://adioso.com/nl/amsterdam-to-north-america Looks like we need to tighten up our geo-constraints a little, not quite sure how Istanbul snuck in there :)