$642 Cheap Finnair flights Oslo (OSL) to Cincinnati (CVG)

Use the "Price (lowest to highest)" filter on Expedia to search for cheap Finnair round-trip flights from $837 from OSL to CVG. Affordable one-way tickets from $642 are available too.**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.

Start your search for Finnair flights from OSL to CVG about one month before you want to go. The cheapest time to book an international flight is usually 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of itinerary or fare class, the best day of the week to book international airfare is usually Sunday. Friday can be the most expensive. Travelers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**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.

Sort your results by "Morning" and "Early Morning" to find the earliest departures from OSL to CVG. Heading off early means you're 20% less likely to experience 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.

With a rewarding loyalty program and a 4-star airline rating, Finnair is a top choice for many travelers flying from OSL to CVG. Plus, if you're a Finnair Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.