Cheapest return flights from Chicago to Helsinki in September from $1021

Best time to book flights for Chicago (MDW) to Helsinki (HEL) flights at AirHint

AirHint found the following cheapest return flights from Chicago (MDW) to Helsinki (HEL) in September 2025 (see full year).

Return flights

20 Sep - 28 Sep Delta

Also check the deals for one-way flights from Chicago to Helsinki in September.

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.

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