Austin (AUS) to Lisbon (LIS): 4,877 miles (7,849 km) great-circle, about 10h 15m nonstop by our estimate. Cheapest fare observed: $1327 round-trip on Porter Airlines, with 2 stops, departing June 25, 2026.
$1327 round-trip, Porter Airlines PD628, departing 2026-06-25 at 16:30, returning 2026-07-03. The recorded itinerary left on a Thursday, returning on a Friday 8 nights later; the fare was observed 61 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $1327, it ranked 29th of the 30 round-trip fares we recorded from AUS (median $292). That is 27.2 cents per great-circle mile (round-trip price over one-way distance), above the AUS median of 22.5 cents across 30 round-trip routes.
Routes from AUS of similar length: Buenos Aires (5,164 mi) at $838 and Dubrovnik (5,973 mi) at $1141.
AUS to LIS is the only one of 30 AUS routes where Porter Airlines priced cheapest. It is the 5th longest of the 30 routes we track from AUS.
Of 24 departure airports with a fare to Lisbon, Austin (AUS) ranked 22nd at $1327. Lowest: $81 from Madrid (MAD); highest: $1476 from Buenos Aires (EZE); 10 nonstop. Cheapest-fare airlines (routes): easyJet (4), Ryanair (4), Air Europa (2), TAP Portugal (2), Air Canada (1) and Air Serbia (1), plus 10 more.
That depends on your passport and trip, so check the official source for Portugal: European Commission: Schengen visa policy. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, Europe/Lisbon; flight time is our estimate.