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 February 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.

$484 Cheap Flights from St. Louis to Finland in 2026

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Find the cheapest flights from St. Louis to Finland

Round-trip

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:46 am - 10:45 am

STL

HEL

14h 59m

1 stop

12:30 pm - 7:29 pm

HEL

STL

13h 59m

1 stop

$484Finnair

Tue, Mar 3 - Tue, Mar 10

10:37 am - 10:45 am

STL

HEL

16h 08m

2 stops

12:30 pm - 11:22 pm

HEL

STL

17h 52m

1 stop

$489American Airlines

Tue, Mar 3 - Tue, Mar 10

11:41 am - 1:55 pm

STL

HEL

18h 14m

1 stop

4:50 pm - 11:11 am

HEL

STL

25h 21m

1 stop

$490Multiple Airlines

Thu, Mar 5 - Thu, Mar 12

9:55 am - 6:50 pm

STL

HEL

24h 55m

2 stops

1:55 pm - 3:29 pm

HEL

STL

32h 34m

2 stops

$499United Airlines

Tue, Mar 3 - Tue, Mar 17

1:39 pm - 4:25 pm

STL

HEL

19h 46m

2 stops

7:00 am - 9:05 am

HEL

STL

33h 05m

2 stops

$500Delta

Mon, Mar 9 - Wed, Mar 18

7:00 pm - 6:50 pm

STL

HEL

16h 50m

2 stops

1:55 pm - 2:49 pm

HEL

STL

31h 54m

2 stops

$501United Airlines

Tue, Mar 10 - Mon, Mar 16

10:14 am - 5:25 pm

STL

HEL

23h 11m

2 stops

7:00 am - 9:05 am

HEL

STL

33h 05m

2 stops

$506Delta

Wed, Mar 4 - Thu, Mar 19

7:41 am - 1:20 pm

STL

HEL

21h 39m

2 stops

1:55 pm - 3:29 pm

HEL

STL

32h 34m

2 stops

$512United Airlines

Thu, Mar 5 - Tue, Mar 17

7:41 am - 1:20 pm

STL

HEL

21h 39m

2 stops

6:55 am - 6:00 pm

HEL

STL

18h 05m

2 stops

$513United Airlines

Thu, Mar 5 - Wed, Mar 18

4:05 pm - 1:10 pm

STL

HEL

38h 05m

2 stops

6:55 am - 3:29 pm

HEL

STL

39h 34m

2 stops

$516Air Canada

Sun, Mar 8 - Mon, Mar 16

United Airlines flights from St. Louis to Finland

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

United Airlines

Mar 3

STL9:55 amLambert-St Louis

24h 55m

2 stops

HEL6:50 pmHelsinki-Vantaa

Mar 17

HEL1:55 pmHelsinki-Vantaa

32h 34m

2 stops

STL3:29 pmLambert-St Louis

$499

United Airlines

Mar 10

STL7:00 pmLambert-St Louis

16h 50m

2 stops

HEL6:50 pmHelsinki-Vantaa

Mar 16

HEL1:55 pmHelsinki-Vantaa

31h 54m

2 stops

STL2:49 pmLambert-St Louis

$501

United Airlines

Mar 5

STL7:41 amLambert-St Louis

24h 49m

2 stops

HEL4:30 pmHelsinki-Vantaa

Mar 12

HEL6:55 amHelsinki-Vantaa

21h 47m

2 stops

STL9:42 pmLambert-St Louis

$512

British Airways flights from St. Louis to Finland

Our best British Airways deals on St. Louis to Finland flight tickets

British Airways

Mar 8

STL6:33 pmLambert-St Louis

21h 27m

2 stops

HEL11:00 pmHelsinki-Vantaa

Mar 17

HEL12:30 pmHelsinki-Vantaa

13h 59m

1 stop

STL7:29 pmLambert-St Louis

$773

British Airways

Mar 8

STL6:33 pmLambert-St Louis

21h 27m

2 stops

HEL11:00 pmHelsinki-Vantaa

Mar 19

HEL12:30 pmHelsinki-Vantaa

27h 25m

1 stop

STL8:55 amLambert-St Louis

$779

British Airways

Feb 6

STL9:33 amLambert-St Louis

21h 42m

2 stops

HEL3:15 pmHelsinki-Vantaa

Feb 10

HEL12:30 pmHelsinki-Vantaa

18h 29m

1 stop

STL10:59 pmLambert-St Louis

$1,372

Fly from

Fly to

Route

Depart

Return

Price

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

11:46 am-10:45 am

1 stop14h 59m

Helsinki-Vantaa

Tue 3/10

12:30 pm-7:29 pm

1 stop13h 59m

$484

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

10:37 am-10:45 am

2 stops16h 08m

Helsinki-Vantaa

Tue 3/10

12:30 pm-11:22 pm

1 stop17h 52m

$489

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 3/5

11:41 am-1:55 pm

1 stop18h 14m

Helsinki-Vantaa

Thu 3/12

4:50 pm-11:11 am

1 stop25h 21m

$490

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/3

9:55 am-6:50 pm

2 stops24h 55m

Helsinki-Vantaa

Tue 3/17

1:55 pm-3:29 pm

2 stops32h 34m

$499

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 3/9

1:39 pm-4:25 pm

2 stops19h 46m

Helsinki-Vantaa

Wed 3/18

7:00 am-9:05 am

2 stops33h 05m

$500

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 3/10

7:00 pm-6:50 pm

2 stops16h 50m

Helsinki-Vantaa

Mon 3/16

1:55 pm-2:49 pm

2 stops31h 54m

$501

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 3/4

10:14 am-5:25 pm

2 stops23h 11m

Helsinki-Vantaa

Thu 3/19

7:00 am-9:05 am

2 stops33h 05m

$506

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 3/5

7:41 am-1:20 pm

2 stops21h 39m

Helsinki-Vantaa

Tue 3/17

1:55 pm-3:29 pm

2 stops32h 34m

$512

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 3/5

7:41 am-1:20 pm

2 stops21h 39m

Helsinki-Vantaa

Wed 3/18

6:55 am-6:00 pm

2 stops18h 05m

$513

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sun 3/8

4:05 pm-1:10 pm

2 stops38h 05m

Helsinki-Vantaa

Mon 3/16

6:55 am-3:29 pm

2 stops39h 34m

$516

Flights are sorted by cheapest round-trip flights first.

Sorted 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

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

You could potentially save up to 28% 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	12h 54m
Direct flights	None

The fastest flight from St. Louis to Finland takes 12h 54m

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

Search flight deals

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 February 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 $484	Free Cancellation	Rating 7.2 11,222 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.