$712 Find Cheap Flights from St. Louis to Helsinki - Compare and Save

Three cabin classes are available on flights from St. Louis to Helsinki:

• Economy Class
• Premium Economy Class
• Business Class

There are currently no nonstop flights available from St. Louis to Helsinki. Flights with 1 layover take between 13h 45m and 14h 45m in total, depending on the connection.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Round-trip flights from St. Louis to Helsinki range from $660 to $1,091, with an average of $830 over the past 12 months. Anything below $660 counts as a good deal.

Helsinki-Vantaa Airport (HEL) hosts 5 major car rental companies, with daily rates averaging $51 for economy cars. Top options include:

• GREEN MOTION
• ADDCAR RENTAL
• Alamo
• Sixt
• Europcar

Flights from St. Louis to Helsinki usually depart from Lambert-St Louis (STL) and arrive at Helsinki-Vantaa (HEL).

One-stop flights from St. Louis to Helsinki most commonly connect through:

• Dallas/Fort Worth (DFW) - 52% of one-stop connections
• Frankfurt am Main (FRA) - 24% of one-stop connections
• Chicago O'Hare Intl (ORD) - 24% of one-stop connections

Yes. Flexible dates can save you up to 58% on flights from St. Louis to Helsinki. Tuesday is the cheapest departure day at $747 round-trip on average, while Saturday is the most expensive at $1,744, a difference of $997.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 13h 45m, compared with 14h 34m via Frankfurt am Main (FRA) and 14h 45m via Dallas/Fort Worth (DFW).

Helsinki is 8 hours ahead of St. Louis (Eastern European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Helsinki are Helsinki Central Station Square, Helsingin päärautatieasema and Esplanadi park. These are among the most viewed places in Helsinki on KAYAK.