The cheapest round-trip from Oslo to Lisbon is about 143 EUR, usually in January 2027; July 2026 is priciest, so booking the low month saves around 188 EUR (~57%). Typical fare ~168 EUR, from 340 priced fares. Flightmussy live data, updated 2026-06-03.
Cheap flights from Oslo (OSL/TRF) to Lisbon (LIS). 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: 143 EUR, usually around January 2027. Typical fare ~168 EUR. Across the year prices range roughly 143–331 EUR — about 57% cheaper in the low season than the peak (July 2026). Carriers on this route include Vueling, Air Serbia, Scandinavian Airlines.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-03. Prices change constantly — search live for current fares.
Flightmussy is a free flight meta-search built by one person in Oslo. No signup, no ads, no tracking — email is optional, only for route price alerts. Compare fares across airlines and see 12 months of prices at a glance — including low-cost carriers Google Flights often deprioritises (Widerøe, Wizz Air, Norwegian, Ryanair). Pay with a card at the airline, or use the Crypto button on any result to check out in BTC, ETH, USDT, BNB or AVA via Travala.