HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helsinki

$522+ Cheap flights from St. Louis (STL) to Helsinki (HEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HEL
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Helsinki with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 20, 2024.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Popular in

June

Cheapest in

November

Round-trip from

$733
(Scandinavian Airlines)

One-way from

$522
(Travelocity)
Provider with most accurate pricing for Lambert-St Louis-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Helsinki-Vantaa flights.
Search Deals
High demand for flights, 36% potential price rise
Search Deals
Best time to find cheap flights, 49% potential price drop
Search Deals
From Lambert-St Louis to Helsinki-Vantaa
Search Deals
One-way flight from Lambert-St Louis to Helsinki-Vantaa
Search Deals

Find flight deals from St. Louis to Helsinki

Cheapest flights from St. Louis to Helsinki
Explore the most affordable flight options available from St. Louis to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2024.

This United Airlines deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/218:05 amSTL - HEL
2 stops20h 55mUnited Airlines
Fri 11/296:50 amHEL - STL
1 stop15h 05mUnited Airlines
Deal found 11/19$1,058
This Scandinavian Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2310:14 amSTL - HEL
2 stops22h 36mScandinavian Airlines
Mon 11/256:30 amHEL - STL
2 stops25h 11mScandinavian Airlines
Deal found 11/20$1,061
This KAYAK deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2112:37 pmSTL - HEL
2 stops26h 48mLufthansa
Mon 12/27:25 pmHEL - STL
2 stops34h 11mLufthansa
Deal found 11/19$1,168
This Orbitz deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2111:51 amSTL - HEL
2 stops19h 14mMultiple Airlines
Sat 11/308:15 amHEL - STL
2 stops21h 44mMultiple Airlines
Deal found 11/19$1,406
This Delta deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/182:10 pmSTL - HEL
2 stops17h 50mDelta
Mon 12/237:00 amHEL - STL
2 stops22h 35mDelta
Deal found 11/20$1,470
This American Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/231:46 pmSTL - HEL
2 stops16h 49mAmerican Airlines
Mon 11/2512:25 pmHEL - STL
1 stop15h 03mAmerican Airlines
Deal found 11/20$2,228
This KAYAK deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/261:45 pmSTL - HEL
2 stops17h 00mFinnair
Sun 1/512:25 pmHEL - STL
1 stop15h 05mFinnair
Deal found 11/19$2,428
This Air France deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/214:04 pmSTL - HEL
2 stops15h 56mAir France
Sun 12/16:30 amHEL - STL
2 stops18h 45mAir France
Deal found 11/19$2,429
This Air Canada deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/263:50 pmSTL - HEL
2 stops18h 50mAir Canada
Sun 1/57:00 amHEL - STL
3 stops22h 45mAir Canada
Deal found 11/19$3,070

Find flights from St. Louis to Helsinki within your budget

Customize your flight search to find flights from St. Louis to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 4/17

4:00 pm-3:25 pm

2 stops15h 25m

Helsinki-Vantaa

Fri 5/2

11:15 am-8:01 pm

2 stops16h 46m

$733

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 4/17

4:00 pm-3:25 pm

2 stops15h 25m

Helsinki-Vantaa

Fri 5/2

9:00 pm-11:38 pm

2 stops34h 38m

$779

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Fri 3/21

1:39 pm-10:50 am

1 stop14h 11m

Helsinki-Vantaa

Fri 3/28

4:55 pm-8:20 am

2 stops22h 25m

$812

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sun 3/9

2:54 pm-2:45 pm

2 stops16h 51m

Helsinki-Vantaa

Sat 3/15

9:25 pm-9:40 pm

2 stops31h 15m

$835

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sun 3/23

5:33 pm-4:50 pm

2 stops16h 17m

Helsinki-Vantaa

Sun 3/30

6:10 am-1:30 pm

1 stop15h 20m

$839

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sun 3/9

4:45 pm-4:50 pm

1 stop17h 05m

Helsinki-Vantaa

Sat 3/15

5:50 pm-2:55 pm

1 stop28h 05m

$849

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Fri 3/21

3:40 pm-4:00 pm

2 stops17h 20m

Helsinki-Vantaa

Sat 3/29

7:00 am-6:02 pm

2 stops18h 02m

$896

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Fri 3/21

11:05 am-1:40 pm

3 stops19h 35m

Helsinki-Vantaa

Fri 3/28

2:00 pm-12:12 pm

3 stops29h 12m

$1,435

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Thu 12/26

1:45 pm-2:45 pm

2 stops17h 00m

Helsinki-Vantaa

Sun 1/5

12:25 pm-7:30 pm

1 stop15h 05m

$2,428

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sat 3/22

6:23 pm-2:45 pm

2 stops37h 22m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 13 results
1
2

Compare providers for flights from St. Louis to Helsinki

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Helsinki in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Helsinki flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Helsinki flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from St. Louis-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Helsinki flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Helsinki

Get recent, data-driven insights about flights from St. Louis to Helsinki including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Helsinki?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Helsinki (average of $441). Flying from St. Louis to Helsinki in June is currently the most expensive (average of $1,212). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to HEL?

Find hourly flight availability from St. Louis to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2024.

It’s typically best to fly out from St. Louis to Helsinki in the morning. Doing so could potentially save you 45% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Helsinki by month

Plan your trip to Helsinki by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helsinki ranges from 1.2 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Helsinki when rainfall is around 1.2 in.

Temperature in Helsinki by month

Plan your trip to Helsinki by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helsinki, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated November 20, 2024.
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,171 reviews
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines
7.3
Good
1,301 reviews
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,756 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from St. Louis to Helsinki round-trip?

    Scandinavian Airlines, at $779, was found to be the cheapest airline from St. Louis to Helsinki.Alternate airlines to your destination round-trip include American Airlines and British Airways. These flights start at 21% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Helsinki one-way?

    The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as $522. However, be on the lookout for offers from American Airlines and Air Canada, as they are both options that can get you from St. Louis to Helsinki for a low price.

  • Can I find deals for flights from St. Louis to Helsinki that include hotel bookings?

    Yes. In addition to deals on St. Louis to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Helsinki.

  • Can I find deals for business class flights from St. Louis to Helsinki?

    Yes. Cheapflights offers flight deals from St. Louis to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Helsinki?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Helsinki (average of $441). Flying from St. Louis to Helsinki in June is currently the most expensive (average of $1,212). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Helsinki flights

Top 4 airlines flying from St. Louis to Helsinki

Discover the top 4 airlines that operate flights from St. Louis to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$479Average$1,489FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$500Average$1,474FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$576Average$576FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$650Average$883FlexibilityNo cancel feeOn-time76%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines