AirHint found the following cheapest one-way flights from Dublin (DUB) to Lisbon (LIS) in May 2026 (see full year).

One-Way flights

06 May	Iberia Express
09 May	Ryanair	direct
06 May	Ryanair	direct
08 May	Ryanair	direct
23 May	Ryanair	direct
01 May	Ryanair	direct
31 May	Ryanair	direct
14 May	Ryanair	direct
29 May	Ryanair	direct
22 May	Ryanair	direct

Also check the deals for return flights from Dublin to Lisbon in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Dublin to Lisbon in May from $85

One-Way flights