When did momondo last update prices for flights from Lambert-St Louis Airport to Finland?

Prices for flights from Lambert-St Louis Airport to Finland are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Finland?

As of May 2026, there is 1 operator available to choose from for flights from Lambert-St Louis Airport to Finland.

How old do you have to be to fly from Lambert-St Louis Airport to Finland?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Finland.

What documentation or ID do you need to fly to Finland?

The travel and health documents you'll need for your trip to Finland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Finland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$476 Cheap Flights from St. Louis to Finland in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Finland

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:36 am - 10:45 am

STL

HEL

18h 09m

1 stop

4:25 pm - 11:59 pm

HEL

STL

15h 34m

1 stop

$953Multiple Airlines

Thu, Aug 6 - Wed, Aug 19

3:39 pm - 4:40 pm

STL

HEL

17h 01m

2 stops

7:00 am - 4:52 pm

HEL

STL

17h 52m

2 stops

$966Air France

Thu, Aug 6 - Wed, Aug 19

5:43 pm - 3:00 pm

STL

HEL

13h 17m

2 stops

4:25 pm - 11:59 pm

HEL

STL

15h 34m

1 stop

$974American Airlines

Thu, Aug 6 - Wed, Aug 19

3:30 pm - 5:30 pm

STL

HEL

18h 00m

1 stop

6:45 am - 5:49 pm

HEL

STL

19h 04m

2 stops

$977United Airlines

Fri, Aug 14 - Sat, Aug 22

10:16 am - 10:45 am

STL

HEL

16h 29m

1 stop

12:35 pm - 11:42 pm

HEL

STL

19h 07m

1 stop

$983Multiple Airlines

Fri, Aug 14 - Sat, Aug 22

1:13 pm - 1:05 pm

STL

HEL

15h 52m

2 stops

6:35 am - 1:25 pm

HEL

STL

14h 50m

1 stop

$989Lufthansa

Wed, Jul 1 - Wed, Jul 15

1:13 pm - 5:10 pm

STL

HEL

19h 57m

2 stops

6:35 am - 1:25 pm

HEL

STL

14h 50m

1 stop

$990Lufthansa

Wed, Jul 1 - Wed, Jul 15

8:49 am - 1:05 pm

STL

HEL

20h 16m

2 stops

7:00 am - 8:37 pm

HEL

STL

21h 37m

2 stops

$991Delta

Wed, Jul 1 - Wed, Jul 15

6:55 am - 2:15 pm

STL

HEL

23h 20m

1 stop

12:35 pm - 11:42 pm

HEL

STL

19h 07m

1 stop

$1,001Multiple Airlines

Thu, Jul 23 - Thu, Aug 6

1:13 pm - 1:05 pm

STL

HEL

15h 52m

2 stops

6:35 am - 11:44 pm

HEL

STL

25h 09m

2 stops

$1,007United Airlines

Wed, Jul 1 - Wed, Jul 15

American Airlines flights from St. Louis to Finland

Our best American Airlines deals on St. Louis to Finland flight tickets

American Airlines

Aug 6

STL5:43 pmLambert-St Louis

13h 17m

2 stops

HEL3:00 pmHelsinki-Vantaa

Aug 19

HEL4:25 pmHelsinki-Vantaa

15h 34m

1 stop

STL11:59 pmLambert-St Louis

$974

American Airlines

Jul 23

STL5:58 pmLambert-St Louis

12h 17m

1 stop

HEL2:15 pmHelsinki-Vantaa

Aug 6

HEL12:35 pmHelsinki-Vantaa

17h 50m

1 stop

STL10:25 pmLambert-St Louis

$1,078

American Airlines

Jul 23

STL5:48 pmLambert-St Louis

14h 32m

2 stops

HEL4:20 pmHelsinki-Vantaa

Aug 6

HEL12:35 pmHelsinki-Vantaa

15h 16m

1 stop

STL7:51 pmLambert-St Louis

$1,099

United Airlines flights from St. Louis to Finland

Our best United Airlines deals on St. Louis to Finland flight tickets

United Airlines

Aug 14

STL3:30 pmLambert-St Louis

18h 00m

1 stop

HEL5:30 pmHelsinki-Vantaa

Aug 22

HEL6:45 amHelsinki-Vantaa

19h 04m

2 stops

STL5:49 pmLambert-St Louis

$977

United Airlines

Jul 1

STL1:13 pmLambert-St Louis

15h 52m

2 stops

HEL1:05 pmHelsinki-Vantaa

Jul 15

HEL6:35 amHelsinki-Vantaa

25h 09m

2 stops

STL11:44 pmLambert-St Louis

$1,007

United Airlines

Jul 23

STL1:13 pmLambert-St Louis

15h 52m

2 stops

HEL1:05 pmHelsinki-Vantaa

Aug 6

HEL6:35 amHelsinki-Vantaa

25h 09m

2 stops

STL11:44 pmLambert-St Louis

$1,024

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 8/6

8:36 am-10:45 am

1 stop18h 09m

Helsinki-Vantaa

Wed 8/19

4:25 pm-11:59 pm

1 stop15h 34m

$953

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 8/6

3:39 pm-4:40 pm

2 stops17h 01m

Helsinki-Vantaa

Wed 8/19

7:00 am-4:52 pm

2 stops17h 52m

$966

Quickest round-trip

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 8/6

5:43 pm-3:00 pm

2 stops13h 17m

Helsinki-Vantaa

Wed 8/19

4:25 pm-11:59 pm

1 stop15h 34m

$974

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Fri 8/14

3:30 pm-5:30 pm

1 stop18h 00m

Helsinki-Vantaa

Sat 8/22

6:45 am-5:49 pm

2 stops19h 04m

$977

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Fri 8/14

10:16 am-10:45 am

1 stop16h 29m

Helsinki-Vantaa

Sat 8/22

12:35 pm-11:42 pm

1 stop19h 07m

$983

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/1

1:13 pm-1:05 pm

2 stops15h 52m

Helsinki-Vantaa

Wed 7/15

6:35 am-1:25 pm

1 stop14h 50m

$989

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/1

1:13 pm-5:10 pm

2 stops19h 57m

Helsinki-Vantaa

Wed 7/15

6:35 am-1:25 pm

1 stop14h 50m

$990

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/1

8:49 am-1:05 pm

2 stops20h 16m

Helsinki-Vantaa

Wed 7/15

7:00 am-8:37 pm

2 stops21h 37m

$991

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 7/23

6:55 am-2:15 pm

1 stop23h 20m

Helsinki-Vantaa

Thu 8/6

12:35 pm-11:42 pm

1 stop19h 07m

$1,001

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/1

1:13 pm-1:05 pm

2 stops15h 52m

Helsinki-Vantaa

Wed 7/15

6:35 am-11:44 pm

2 stops25h 09m

$1,007

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Finland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Finland?

If you don’t want to visit Finland in January, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $433.

Can stopping save me money on St. Louis to Finland flights?

You could potentially save up to 19% on your flight if you consider stops on a St. Louis to Finland flight.

Cheap St. Louis to Finland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Finland

Fastest flight time	14h 55m
Direct flights	None

The fastest flight from St. Louis to Finland takes 14h 55m

There are no direct flights from St. Louis to Finland. There are no popular flight routes from St. Louis to Finland.

Search flight deals

Frequently asked questions about flying from St. Louis to Finland

When did momondo last update prices for flights from Lambert-St Louis Airport to Finland?
Prices for flights from Lambert-St Louis Airport to Finland are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Finland?
As of May 2026, there is 1 operator available to choose from for flights from Lambert-St Louis Airport to Finland.
How old do you have to be to fly from Lambert-St Louis Airport to Finland?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Finland.
What documentation or ID do you need to fly to Finland?
The travel and health documents you'll need for your trip to Finland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Finland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Finland

Compare and see reviews for airlines that fly from St. Louis to Finland with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $481	Free Cancellation	Rating 7.1 11,667 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Finland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Finland from St. Louis.

Can I find flights from St. Louis to Finland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Finland flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Finland?

momondo helps you find the best flight between St. Louis and Finland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Finland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Finland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Finland and let you know when they change.