The cheapest Porto to Bonaire return flight on the radar right now is €789, flying with KLM via one or more connections. It covers departures in September 2027, and every dated link below opens that exact OPO–BON search on Skyscanner. Across 15 recorded checks it has ranged between €768 and €789. Our sampling points to September 2027 as the cheapest month to fly Porto to Bonaire.
Every fare here is re-confirmed against Skyscanner automatically, and each one is stamped with the moment it was last checked, so you can see how fresh it is instead of taking it on trust. Not flying from Porto? We track 34 other departure cities for Bonaire, listed at the foot of this page.
Fares move quickly. If this Porto to Bonaire price has gone by the time you search, shift the dates a day or two either side, because the same route is often still cheap just next door.