AirHint found the following cheapest one-way flights from Seattle (SEA) to Helsinki (HEL) in June 2026 (see full year).
One-Way flights
| 02 Jun | Finnair | ||
| 05 Jun | Finnair | ||
| 09 Jun | Finnair | ||
| 01 Jun | Finnair | ||
| 03 Jun | Finnair | ||
| 10 Jun | Finnair | ||
| 08 Jun | Finnair | ||
| 07 Jun | Finnair | direct | |
| 21 Jun | Finnair | direct | |
| 05 Jun | Finnair | direct |
Also check the deals for return flights from Seattle to Helsinki in June.
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