June is the cheapest month to fly this route, with average fares around $150 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $215 | $177 | Peak | |
| June 2026 | $150 | $111 | Best | |
| July 2026 | $198 | $142 | ||
| August 2026 | $189 | $181 |
Departing on Tuesday offers the lowest average fares at $160. Friday departures are the most expensive at $212, a difference of $52.
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 Dublin to Lisbon is June, with average round-trip fares around $150. The lowest fare found in June is $111.
Tuesday departures are the cheapest, averaging $160 round trip. The most expensive day is Friday at $212.
Based on current pricing trends, booking for June travel offers the best value. Avoid May if possible, as fares average $215 compared to $150 in the cheapest month. July is a solid middle-ground option at $198.
Flying in June instead of May can save you approximately $65 per round trip. The cheapest month averages $150 while the most expensive averages $215.
Airlines, flight times, price calendar, and more for Dublin to Lisbon
View DUB → LIS Details