Cheapest one-way flights from Trondheim to Helsinki in September from $96

AirHint found the following cheapest one-way flights from Trondheim (TRD) to Helsinki (HEL) in September 2025 (see full year).

One-Way flights

15 Sep Norwegian
20 Sep Scandinavian Airlines
22 Sep Scandinavian Airlines
25 Sep Scandinavian Airlines
18 Sep Wizz Air
14 Sep Wizz Air
27 Sep Scandinavian Airlines
19 Sep Scandinavian Airlines
08 Sep Norwegian
07 Sep Finnair direct

Also check the deals for return flights from Trondheim 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.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki

Feel free to contact us with any feedback or request another flight research.