June is the cheapest month to fly this route, with average fares around $284 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $360 | $251 | ||
| June 2026 | $284 | $245 | Best | |
| July 2026 | $348 | $274 | ||
| August 2026 | $360 | $325 | Peak |
Departing on Monday offers the lowest average fares at $301. Friday departures are the most expensive at $359, a difference of $58.
The best time to fly is June. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Frankfurt to Lisbon is June, with average round-trip fares around $284. The lowest fare found in June is $245.
Monday departures are the cheapest, averaging $301 round trip. The most expensive day is Friday at $359.
Based on current pricing trends, booking for June travel offers the best value. Avoid August if possible, as fares average $360 compared to $284 in the cheapest month. May is a solid middle-ground option at $360.
Flying in June instead of August can save you approximately $76 per round trip. The cheapest month averages $284 while the most expensive averages $360.
Airlines, flight times, price calendar, and more for Frankfurt to Lisbon
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