The cheapest Lisbon to Addis Ababa return flight on the radar right now is €936, flying with TAP Air Portugal + Ethiopian Airlines via one or more connections. It covers departures in December 2026, and every dated link below opens that exact LIS–ADD search on Skyscanner. The price we usually record on this route is €617. Across 47 recorded checks it has ranged between €553 and €1,029. Our sampling points to December 2026 as the cheapest month to fly Lisbon to Addis Ababa.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Lisbon? We track 54 other departure cities for Addis Ababa, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Lisbon to Addis Ababa is often still worth booking within a day or two of the fare we found.