The cheapest flight to Vienna you can get by boooking 12 days before departure.
The most popular airlines on the route Lisbon - Vienna: TAP Air Portugal (TP), Turkish Airlines (TK), Lufthansa (LH).
The cheapest flights you can book on the route Portela (LIS) - Schwechat (VIE).
Direct flights last about 3h 20min.
Direct flights available 7 days a week.
Direct flights: TAP Air Portugal (TP).