May is the cheapest month to fly this route, with average fares around $131 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $131 | $82 | Best | |
| June 2026 | $145 | $85 | ||
| July 2026 | $155 | $99 | ||
| August 2026 | $182 | $170 | Peak |
Departing on Thursday offers the lowest average fares at $135. Sunday departures are the most expensive at $171, a difference of $36.
The best time to fly is May. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from Lisbon to Rome is May, with average round-trip fares around $131. The lowest fare found in May is $82.
Thursday departures are the cheapest, averaging $135 round trip. The most expensive day is Sunday at $171.
Based on current pricing trends, booking for May travel offers the best value. Avoid August if possible, as fares average $182 compared to $131 in the cheapest month. July is a solid middle-ground option at $155.
Flying in May instead of August can save you approximately $51 per round trip. The cheapest month averages $131 while the most expensive averages $182.
Airlines, flight times, price calendar, and more for Lisbon to Rome
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