AirHint found the following cheapest return flights from Portland (PDX) to Dublin (DUB) in May 2026 (see full year).
Return flights
| 05 May - 26 May | United | ||
| 11 May - 19 May | Delta | ||
| 31 May - 09 Jun | British Airways | ||
| 11 May - 25 May | Delta | ||
| 20 May - 13 Jun | Air Canada |
Also check the deals for one-way flights from Portland to Dublin in May.
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