The cheapest round-trip from Lisbon to Madrid is about 41 EUR, usually in August 2026; May 2027 is priciest, so booking the low month saves around 32 EUR (~44%). Typical fare ~59 EUR, from 148 priced fares. Flightmussy live data, updated 2026-06-13.
Cheap flights from Lisbon (LIS) to Madrid (MAD). 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: 41 EUR, usually around August 2026. Typical fare ~59 EUR. Across the year prices range roughly 41–73 EUR — about 44% cheaper in the low season than the peak (May 2027). Carriers on this route include Ryanair, easyJet, Iberia, Tap Air Portugal.
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. August 2026 is cheapest; May 2027 is priciest.
| Jun 2026 | 60 EUR | |
|---|---|---|
| Jul 2026 | 44 EUR | |
| Aug 2026 | 41 EUR | |
| Feb 2027 | 59 EUR | |
| Mar 2027 | 59 EUR | |
| Apr 2027 | 72 EUR | |
| May 2027 | 73 EUR |
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