Cheapest return flights from Seattle to Helsinki in April from 578€

Best time to book flights for Seattle (SEA) to Helsinki (HEL) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Helsinki (HEL) in April 2025 (see full year).

Return flights

22 Apr - 29 Apr Finnair
15 Apr - 22 Apr Finnair
02 Apr - 09 Apr Delta
23 Apr - 30 Apr Delta
29 Apr - 06 May Delta
18 Apr - 25 Apr Icelandair
17 Apr - 24 Apr Icelandair
01 Apr - 08 Apr Delta
21 Apr - 28 Apr Delta
03 Apr - 10 Apr Delta
25 Apr - 02 May Delta
27 Apr - 04 May Delta
19 Apr - 26 Apr Delta

Also check the deals for one-way flights from Seattle to Helsinki in April.

Skyscanner

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.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki