Cheap flights from St. Louis to Helsinki from $486

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3 stops
Mon, Jun 16
St. Louis STLHelsinki HEL

$486
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2 stops
Mon, Jun 16
St. Louis STLHelsinki HEL

$505
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3 stops
Mon, Jun 16
St. Louis STLHelsinki HEL

$525
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3 stops
Mon, Jun 16
St. Louis STLHelsinki HEL

$638
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3 stops
Tue, Jun 17
St. Louis STLHelsinki HEL

$644
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3 stops
Tue, Jun 17
St. Louis STLHelsinki HEL

$679
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Prices updated:

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2 stops
Sat, Jun 14 – Thu, Jun 19
St. Louis STLHelsinki HEL

$1,028
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2 stops
Sat, Jun 14 – Wed, Jun 18
St. Louis STLHelsinki HEL

$1,041
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2 stops
Sat, Jun 14 – Thu, Jun 19
St. Louis STLHelsinki HEL

$1,072
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2 stops
Thu, Jun 19 – Wed, Jun 25
St. Louis STLHelsinki HEL

$1,090
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2 stops
Thu, Jun 19 – Mon, Jun 23
St. Louis STLHelsinki HEL

$1,097
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2 stops
Mon, Jun 16 – Fri, Jun 20
St. Louis STLHelsinki HEL

$1,135
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Prices updated:

How much do flights to Helsinki cost?

Key info about flying to Helsinki

Depart from
St. Louis Lambert International
Arrive to
Helsinki
Average flights per week
390
Flight distance
Worth visiting
Temppeliaukion Kirkko - Old Town of Tallinn

Check-in for a flight from St. Louis to Helsinki

NameCarrier codeIATA CodePassport needed during booking
FinnairFINAYNo
Air CanadaACAACYes
Frontier AirlinesFFTF9No
RyanairRYRFRNo
Hawaiian AirlinesHALHANo

Weather in Helsinki

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January-1°C-5°C
February-1°C-5°C
March1°C-3°C
April6°C1°C
May13°C6°C
June17°C11°C
July20°C14°C
August19°C14°C
September15°C10°C
October8°C5°C
November4°C1°C
December0°C-2°C
Hottest Month
20°C
July
Coldest month
-5°C
January
Sunny days
231
days per year
Snow days
29
days per year

14 day forecast

Saturday
17 May
97%
12°C6°C
24 May
89%
9°C5°C
Sunday
18 May
86%
13°C7°C
25 May
84%
11°C7°C
Monday
19 May
13°C6°C
26 May
12°C6°C
Tuesday
20 May
84%
12°C6°C
27 May
76%
15°C7°C
Wednesday
21 May
86%
13°C8°C
28 May
15°C8°C
Thursday
22 May
89%
9°C7°C
29 May
87%
12°C9°C
Friday
23 May
85%
10°C6°C
30 May
14°C8°C
The most popular airlines for this route are Finnair, Air Canada, Frontier Airlines, Ryanair, and Hawaiian Airlines. St. Louis and Helsinki have 390 direct flights per week. When you arrive at Helsinki, consider visiting Temppeliaukion Kirkko, and Old Town of Tallinn.

Frequently asked questions

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Which airlines fly between St. Louis and Helsinki?
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What flights operate between St. Louis and Helsinki?
How many airports are there near St. Louis?
How many airports are there near Helsinki?
What time do nonstop (direct) flights between St. Louis and Helsinki depart?
What time do nonstop (direct) flights between St. Louis and Helsinki arrive?
What time do flights between St. Louis and Helsinki depart?
What time do flights between St. Louis and Helsinki arrive?

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