August is the cheapest month to fly this route, with average fares around $137 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $165 | $112 | Peak | |
| June 2026 | $156 | $92 | ||
| July 2026 | $158 | $119 | ||
| August 2026 | $137 | $109 | Best |
Departing on Tuesday offers the lowest average fares at $129. Saturday departures are the most expensive at $174, a difference of $45.
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 Dublin to Barcelona is August, with average round-trip fares around $137. The lowest fare found in August is $109.
Tuesday departures are the cheapest, averaging $129 round trip. The most expensive day is Saturday at $174.
Based on current pricing trends, booking for August travel offers the best value. Avoid May if possible, as fares average $165 compared to $137 in the cheapest month. July is a solid middle-ground option at $158.
Flying in August instead of May can save you approximately $28 per round trip. The cheapest month averages $137 while the most expensive averages $165.
Airlines, flight times, price calendar, and more for Dublin to Barcelona
View DUB → BCN Details