The cheapest Oslo to Tokyo return flight on the radar right now is €936, flying with KLM + Asiana Airlines + Air France via one or more connections. It covers departures in November 2026, and every dated link below opens that exact OSL–NRT search on Skyscanner. That is roughly 22% below the €1,195 this route usually costs. Across 85 recorded checks it has ranged between €670 and €1,361. Our sampling points to November 2026 as the cheapest month to fly Oslo to Tokyo.
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 Oslo? We track 62 other departure cities for Tokyo, 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 Oslo to Tokyo is often still worth booking within a day or two of the fare we found.