AirHint found the following cheapest return flights from Denver (DEN) to Helsinki (HEL) in November 2025 (see full year).
Return flights
| 18 Nov - 13 Dec | United | ||
| 15 Nov - 06 Dec | United | ||
| 17 Nov - 13 Dec | Icelandair | ||
| 21 Nov - 13 Dec | Frontier Airlines | ||
| 30 Nov - 20 Dec | Icelandair |
Also check the deals for one-way flights from Denver to Helsinki in November.
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