The cheapest round-trip from Brussels to Oslo is about 230 EUR, usually in November 2026; January 2027 is priciest, so booking the low month saves around 4 EUR (~2%). Typical fare ~233 EUR, from 91 priced fares. Flightmussy live data, updated 2026-06-13.
Cheap flights from Brussels (BRU/CRL) to Oslo (OSL/TRF). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.
Cheapest round-trip seen: 230 EUR, usually around November 2026. Typical fare ~233 EUR. Across the year prices range roughly 230–234 EUR — about 2% cheaper in the low season than the peak (January 2027).
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-13. Prices change constantly — search live for current fares.
The lowest round-trip fare we found for each month over the coming year — low season versus peak at a glance. November 2026 is cheapest; January 2027 is priciest.
| Nov 2026 | 230 EUR | |
|---|---|---|
| Dec 2026 | 230 EUR | |
| Jan 2027 | 234 EUR | |
| Feb 2027 | 234 EUR |
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