AirHint found the following cheapest return flights from Chicago (ORD) to Helsinki (HEL) in September 2026 (see full year).
Return flights
| 30 Sep - 03 Oct | Scandinavian Airlines | ||
| 29 Sep - 02 Oct | Scandinavian Airlines | ||
| 30 Sep - 02 Oct | Icelandair | ||
| 29 Sep - 02 Oct | Finnair | direct |
Also check the deals for one-way flights from Chicago to Helsinki in September.
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