The cheapest Lisbon to Doha return flight on the radar right now is €603, flying with Etihad Airways via one or more connections. It covers departures in February 2027, and every dated link below opens that exact LIS–DOH search on Skyscanner. The price we usually record on this route is €617. Across 113 recorded checks it has ranged between €311 and €666. Our sampling points to February 2027 as the cheapest month to fly Lisbon to Doha.
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 62 other departure cities for Doha, 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 Doha is often still worth booking within a day or two of the fare we found.