| Cheap Flights: Austin to Frankfurt $417-$452 r/t â American Airlines / British Airways American Airlines and British Airways have round-trip flights from Austin (AUS) to Frankfurt (FRA) for $417-$452 with a connection. Flights March, April, May, August, September, October, November, and December. No Weekends. Departures on Monday, Tuesday, Wednesday, and Thursday. You can also save an additional 16% off your Hotel or up to $150 for Flight+Hotel packages on CheapTickets by using the âGLOBETROTTERâ or âADVENTURE150â coupon codes at checkout (before finalizing your booking). Note: Carry-on bag is allowed for free on American Airlines and British Airways. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. Want a notification sent straight to your phone when any new deals are found? Join our Telegram channel and never miss another deal. We donât charge a subscription fee. All of our deal notifications are available for FREE via Instagram, Facebook, Twitter, Telegram, our Webpage, and our E-mail list. If you are paying someone a subscription fee for our content, you are being ripped off. Read More Cheap Flights: Austin to Frankfurt $417-$452 r/t â American Airlines / British Airways . | 