Cheap flights from Chicago to Helsinki from $340

The month of February is, on average, the cheapest month to fly to Helsinki from Chicago, with most prices found around $461. If you aren’t able to travel during the month of February, then book flights to Helsinki from Chicago during January instead. Flights to Helsinki in January, while not as cheap as those in February, still average around $511.

The cheapest day to depart on your flight to Helsinki is on a Sunday when prices can be found for as low as $787. This is often the case because there is less demand to fly during this day of the week. Flights from Chicago to Helsinki on a Friday will generally be more expensive and average around $1,086. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Fly from Chicago O'Hare Intl to Helsinki-Vantaa for the best Chicago - Helsinki-Vantaa flight prices

You are more likely to see cheaper flights to Helsinki from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $778 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Helsinki from Chicago for as low as $671 on momondo.

There are 3 cabin classes available to choose from on Chicago to Helsinki flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 1% on your flight if you consider stops on a Chicago to Helsinki flight.

Air France, Delta, and Icelandair are the most popular carriers operating from Chicago to Helsinki-Vantaa

Icelandair, Finnair and Scandinavian Airlines are the top three most popular airlines that fly to Helsinki from Chicago according to our data. Icelandair is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Helsinki. Keep in mind that there are 5 different airlines that fly to Helsinki on a routine basis, so you have a few additional options to choose from.

Copenhagen (CPH) was the most common stop: 48% of momondo users choosing 1-stop flights on this route connected there.

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $701.

Flights connecting via Reykjavik (KEF) have the shortest average one-way travel time: 10h 32m.

Reykjavik (KEF) has the shortest average layover time for this route: 0h 46m.

As of September 2026, there are 3 flights per day flying from Chicago to Helsinki. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

As of September 2026, 25 flights take off from Chicago and land in Helsinki each week. The most common flight departure day for this route is Tue, with 20% of weekly flights taking off on this day.