AirHint found the following cheapest return flights from Portland (PDX) to Dublin (DUB) in May 2026 (see full year).
Return flights
| 20 May - 16 Jun | Icelandair | ||
| 19 May - 25 May | KLM | ||
| 19 May - 16 Jun | British Airways | ||
| 04 May - 15 May | Icelandair | ||
| 21 May - 16 Jun | Icelandair | ||
| 19 May - 22 May | KLM | ||
| 04 May - 13 May | Delta | ||
| 08 May - 18 May | KLM |
Also check the deals for one-way flights from Portland to Dublin in May.
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