AirHint found the following cheapest one-way flights from Tallinn (TLL) to Oslo (OSL) in September 2025 (see full year).

One-Way flights

10 Sep	Norwegian Air Sweden AOC	direct
19 Sep	Norwegian Air Sweden AOC	direct
03 Sep	Norwegian Air Sweden AOC	direct
07 Sep	airBaltic	direct
26 Sep	Norwegian Air Sweden AOC	direct
24 Sep	airBaltic
24 Sep	Norwegian Air Sweden AOC	direct
01 Sep	airBaltic
02 Sep	airBaltic
06 Sep	airBaltic

Also check the deals for return flights from Tallinn to Oslo in September.

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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Cheapest one-way flights from Tallinn to Oslo in September from $50

One-Way flights