August is the cheapest month to fly this route, with average fares around $68 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $133 | $75 | Peak | |
| June 2026 | $76 | $40 | ||
| July 2026 | $72 | $55 | ||
| August 2026 | $68 | $55 | Best |
Departing on Wednesday offers the lowest average fares at $56. Saturday departures are the most expensive at $99, a difference of $43.
The best time to fly is August. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Madrid to Lisbon is August, with average round-trip fares around $68. The lowest fare found in August is $55.
Wednesday departures are the cheapest, averaging $56 round trip. The most expensive day is Saturday at $99.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $133 compared to $68 in the cheapest month. June is a solid middle-ground option at $76.
Flying in August instead of May can save you approximately $65 per round trip. The cheapest month averages $68 while the most expensive averages $133.
Airlines, flight times, price calendar, and more for Madrid to Lisbon
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