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 March 2026, there are 2 operators 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.

$699 Cheap Flights from St. Louis to Finland in 2026

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Find the cheapest flights from St. Louis to Finland

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:42 pm - 8:25 pm

STL

HEL

20h 43m

2 stops

6:10 am - 8:50 pm

HEL

STL

22h 40m

2 stops

$699Scandinavian Airlines

월, 9월 7 - 월, 9월 14

5:21 pm - 2:15 pm

STL

HEL

12h 54m

1 stop

4:25 pm - 10:19 pm

HEL

STL

13h 54m

1 stop

$722Finnair

화, 5월 5 - 화, 5월 12

4:30 pm - 2:15 pm

STL

HEL

13h 45m

1 stop

4:25 pm - 11:46 pm

HEL

STL

15h 21m

1 stop

$726American Airlines

일, 4월 19 - 화, 5월 5

1:30 pm - 8:35 pm

STL

HEL

23h 05m

3 stops

6:10 am - 11:37 pm

HEL

STL

25h 27m

2 stops

$728Scandinavian Airlines

월, 9월 7 - 월, 9월 14

1:46 pm - 1:05 pm

STL

HEL

15h 19m

2 stops

7:00 am - 2:31 pm

HEL

STL

15h 31m

2 stops

$738KLM

화, 5월 5 - 화, 5월 12

11:14 am - 3:25 pm

STL

HEL

20h 11m

2 stops

4:40 pm - 7:33 pm

HEL

STL

34h 53m

2 stops

$766Iberia

월, 5월 4 - 월, 5월 11

12:27 pm - 2:15 pm

STL

HEL

17h 48m

1 stop

12:35 pm - 7:30 pm

HEL

STL

14h 55m

1 stop

$772American Airlines

월, 5월 4 - 월, 5월 11

12:27 pm - 10:45 am

STL

HEL

14h 18m

1 stop

4:25 pm - 8:27 am

HEL

STL

24h 02m

1 stop

$773American Airlines

금, 5월 1 - 금, 5월 8

12:27 pm - 2:15 pm

STL

HEL

17h 48m

1 stop

4:25 pm - 11:46 pm

HEL

STL

15h 21m

1 stop

$781American Airlines

일, 4월 19 - 일, 4월 26

8:30 am - 12:40 am

STL

HEL

32h 10m

2 stops

6:45 am - 1:25 pm

HEL

STL

14h 40m

1 stop

$796United Airlines

수, 4월 29 - 일, 5월 3

Finnair flights from St. Louis to Finland

Our best Finnair deals on St. Louis to Finland flight tickets

Finnair

May 5

STL5:21 pmLambert-St Louis

12h 54m

1 stop

HEL2:15 pmHelsinki-Vantaa

May 12

HEL4:25 pmHelsinki-Vantaa

13h 54m

1 stop

STL10:19 pmLambert-St Louis

$722

Finnair

Apr 29

STL5:21 pmLambert-St Louis

12h 54m

1 stop

HEL2:15 pmHelsinki-Vantaa

May 3

HEL4:25 pmHelsinki-Vantaa

13h 54m

1 stop

STL10:19 pmLambert-St Louis

$1,011

American Airlines flights from St. Louis to Finland

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

American Airlines

Apr 19

STL4:30 pmLambert-St Louis

13h 45m

1 stop

HEL2:15 pmHelsinki-Vantaa

May 5

HEL4:25 pmHelsinki-Vantaa

15h 21m

1 stop

STL11:46 pmLambert-St Louis

$726

American Airlines

May 4

STL12:27 pmLambert-St Louis

17h 48m

1 stop

HEL2:15 pmHelsinki-Vantaa

May 11

HEL12:35 pmHelsinki-Vantaa

14h 55m

1 stop

STL7:30 pmLambert-St Louis

$772

American Airlines

May 1

STL12:27 pmLambert-St Louis

14h 18m

1 stop

HEL10:45 amHelsinki-Vantaa

May 8

HEL4:25 pmHelsinki-Vantaa

24h 02m

1 stop

STL8:27 amLambert-St Louis

$773

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

월 9/7

3:42 pm-8:25 pm

2 stops20h 43m

Helsinki-Vantaa

월 9/14

6:10 am-8:50 pm

2 stops22h 40m

$699

Quickest round-trip

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

화 5/5

5:21 pm-2:15 pm

1 stop12h 54m

Helsinki-Vantaa

화 5/12

4:25 pm-10:19 pm

1 stop13h 54m

$722

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

일 4/19

4:30 pm-2:15 pm

1 stop13h 45m

Helsinki-Vantaa

화 5/5

4:25 pm-11:46 pm

1 stop15h 21m

$726

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

월 9/7

1:30 pm-8:35 pm

3 stops23h 05m

Helsinki-Vantaa

월 9/14

6:10 am-11:37 pm

2 stops25h 27m

$728

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

화 5/5

1:46 pm-1:05 pm

2 stops15h 19m

Helsinki-Vantaa

화 5/12

7:00 am-2:31 pm

2 stops15h 31m

$738

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

월 5/4

11:14 am-3:25 pm

2 stops20h 11m

Helsinki-Vantaa

월 5/11

4:40 pm-7:33 pm

2 stops34h 53m

$766

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

월 5/4

12:27 pm-2:15 pm

1 stop17h 48m

Helsinki-Vantaa

월 5/11

12:35 pm-7:30 pm

1 stop14h 55m

$772

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

금 5/1

12:27 pm-10:45 am

1 stop14h 18m

Helsinki-Vantaa

금 5/8

4:25 pm-8:27 am

1 stop24h 02m

$773

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

일 4/19

12:27 pm-2:15 pm

1 stop17h 48m

Helsinki-Vantaa

일 4/26

4:25 pm-11:46 pm

1 stop15h 21m

$781

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

수 4/29

8:30 am-12:40 am

2 stops32h 10m

Helsinki-Vantaa

일 5/3

6:45 am-1:25 pm

1 stop14h 40m

$796

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 March 2026, there are 2 operators 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
Finnair	PriceFrom $433	Free Cancellation	Rating 7.7 1,374 reviews		Search Finnair flights
American Airlines	PriceFrom $481	Free Cancellation	Rating 7.1 11,488 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.