Hi everyone, CEO of Trippeo here. We just released our flight booking portal this morning where you can book flights (and track expenses) with Trippeo. We don't re-direct you to a 3rd party booking site - you search and booking directly with Trippeo. We have secured some pretty decent rates for North American flights and I welcome you to give it a try. You'll have to sign in to Trippeo to view the flight portal.