Virgin Atlantic, Delta, KLM, British Airways and various other airlines have round-trip flights from Austin (AUS) to London, United Kingdom (LHR) for $629, NONSTOP. Flights September to March. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required.
A Carry-on bag and also a personal item is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.