The cheapest round-trip from Lisbon to Athens is about 136 EUR, usually in November 2026; May 2027 is priciest, so booking the low month saves around 116 EUR (~46%). Typical fare ~158 EUR, from 270 priced fares. Flightmussy live data, updated 2026-06-05.
Cheap flights from Lisbon (LIS) to Athens (ATH). 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: 136 EUR, usually around November 2026. Typical fare ~158 EUR. Across the year prices range roughly 136–252 EUR — about 46% cheaper in the low season than the peak (May 2027). Carriers on this route include Vueling, Iberia, Tap Air Portugal, KLM.
Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-05. Prices change constantly — search live for current fares.
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