The cheapest Lisbon to Belize return flight on the radar right now is €831, flying with United via one or more connections. It covers departures in January 2027, and every dated link below opens that exact LIS–BZE search on Skyscanner. Across 39 recorded checks it has ranged between €722 and €1,013. Our sampling points to January 2027 as the cheapest month to fly Lisbon to Belize.
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 42 other departure cities for Belize, 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 Belize is often still worth booking within a day or two of the fare we found.