$209 Cheap Finnair flights Oslo (OSL) to Oulu (OUL)

Scoring cheap one-way Finnair flights from OSL to OUL from $209 on Expedia is a cinch — just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Snagging the best Finnair deals from OSL to OUL often comes down to booking at the right time. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. What's more, you can pocket 17% on average by buying your fare on a Sunday rather than a Friday, which is usually the most expensive day to book.* It's a good idea to start checking out flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

To find the earliest departure from OSL to OUL with Finnair, sort your results by "Early Morning" and "Morning." Booking an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Finnair makes traveling from OSL to OUL more comfortable with a rewarding loyalty program and a 4-star airline rating. You even have the chance to collect points with Finnair Plus. Be sure to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.