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Cheap flights from St. Louis (STL) to Helsinki (HEL) from $543

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 8/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — HEL
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
1 adult, Economy
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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 May 2, 2024.

Popular in

June

Cheapest in

October

Round-trip from

$628

One-way from

$543
High demand for flights, 31% potential price rise
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Best time to find cheap flights, 46% potential price drop
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From Lambert-St Louis to Helsinki-Vantaa
Search Deals
One-way flight from Lambert-St Louis to Helsinki-Vantaa
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What is the cheapest day to fly round-trip from St. Louis to Helsinki?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 33% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from St. Louis to Helsinki?

The best pricing can be found in the month of October. Prices to Helsinki from St. Louis average $981. You can even find prices in October for less than $981, as users have found deals to Helsinki from as low as $501. The month of June appears to be one of the more expensive times to travel to Helsinki from St. Louis. Flying in the targeted month can save you up to 44%.

When is the cheapest time to fly from St. Louis to Helsinki (STL - HEL)?

It’s typically best to fly out from St. Louis to Helsinki in the morning. Doing so could potentially save you 22% on the flight price compared to flying at noon, which is usually more expensive.

Cheap Delta flights from St. Louis to Helsinki

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Helsinki. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Consider these cheap Delta flights we've found departing from St. Louis to Helsinki. It's recommended that users confirm their flight details before booking.
Tue 5/2812:00 pmSTL - HEL
2 stops20h 40mDelta
Tue 6/46:40 amHEL - STL
2 stops22h 54mDelta
Deal found 5/1$1,199
Fri 6/1411:25 amSTL - HEL
2 stops21h 15mDelta
Thu 6/276:40 amHEL - STL
2 stops25h 03mDelta
Deal found 5/1$1,249

Cheap American Airlines flights from St. Louis to Helsinki

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Helsinki. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Take a gander at the lowest prices we've found on American Airlines flights from St. Louis to Helsinki. Check back soon if you're not seeing flights that suit your needs.
Fri 6/1412:44 pmSTL - HEL
2 stops17h 16mAmerican Airlines
Thu 6/2712:25 pmHEL - STL
1 stop15h 59mAmerican Airlines
Deal found 5/1$1,511
Fri 6/1411:03 amSTL - HEL
1 stop18h 57mAmerican Airlines
Thu 6/2712:25 pmHEL - STL
1 stop14h 06mAmerican Airlines
Deal found 5/1$3,796

Cheap St. Louis to Helsinki flights in May & June 2024

Find cheap flight options from St. Louis to Helsinki specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 2, 2024.
These are some of the best deals we've found on flights to Helsinki in 2024 at this time. For more flight deals, be sure to check back very soon.
Sat 5/45:25 pmSTL - HEL
2 stops34h 35mMultiple Airlines
Tue 5/216:20 amHEL - STL
2 stops22h 45mMultiple Airlines
Deal found 5/2$1,160
Sat 5/410:41 amSTL - HEL
2 stops19h 19mAmerican Airlines
Tue 5/214:00 pmHEL - STL
1 stop13h 47mAmerican Airlines
Deal found 5/2$1,169
Tue 5/2812:00 pmSTL - HEL
2 stops20h 40mDelta
Tue 6/46:40 amHEL - STL
2 stops22h 54mDelta
Deal found 5/1$1,199
Fri 6/1411:25 amSTL - HEL
2 stops21h 15mDelta
Thu 6/276:40 amHEL - STL
2 stops25h 03mDelta
Deal found 5/1$1,249
Sat 5/45:25 pmSTL - HEL
1 stop12h 50mMultiple Airlines
Tue 5/214:00 pmHEL - STL
1 stop13h 47mMultiple Airlines
Deal found 5/2$1,311
Tue 5/285:31 pmSTL - HEL
2 stops17h 14mUnited Airlines
Tue 6/41:25 pmHEL - STL
1 stop32h 05mUnited Airlines
Deal found 5/1$1,316
Tue 5/285:08 pmSTL - HEL
1 stop13h 07mFinnair
Tue 6/44:00 pmHEL - STL
1 stop13h 47mFinnair
Deal found 5/1$1,456
Fri 6/1411:03 amSTL - HEL
1 stop18h 57mMultiple Airlines
Thu 6/275:20 pmHEL - STL
1 stop23h 16mMultiple Airlines
Deal found 5/1$1,506
Fri 6/1412:44 pmSTL - HEL
2 stops17h 16mAmerican Airlines
Thu 6/2712:25 pmHEL - STL
1 stop15h 59mAmerican Airlines
Deal found 5/1$1,511

St. Louis to Helsinki 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Helsinki in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
These are some of the best deals we've found on flights to Helsinki in 2024 at this time. For more flight deals, be sure to check back very soon.
Wed 5/11:47 pmSTL - HEL
2 stops16h 13mAmerican Airlines
Wed 5/85:20 pmHEL - STL
2 stops24h 33mAmerican Airlines
Deal found 5/1$1,119
Wed 5/112:20 pmSTL - HEL
2 stops17h 40mAmerican Airlines
Wed 5/83:55 pmHEL - STL
1 stop13h 52mAmerican Airlines
Deal found 5/1$1,121
Sat 5/45:25 pmSTL - HEL
2 stops34h 35mMultiple Airlines
Tue 5/216:20 amHEL - STL
2 stops22h 45mMultiple Airlines
Deal found 5/2$1,160
Sat 5/410:41 amSTL - HEL
2 stops19h 19mAmerican Airlines
Tue 5/214:00 pmHEL - STL
1 stop13h 47mAmerican Airlines
Deal found 5/2$1,169
Tue 5/2812:00 pmSTL - HEL
2 stops20h 40mDelta
Tue 6/46:40 amHEL - STL
2 stops22h 54mDelta
Deal found 5/1$1,199
Fri 6/1411:25 amSTL - HEL
2 stops21h 15mDelta
Thu 6/276:40 amHEL - STL
2 stops25h 03mDelta
Deal found 5/1$1,249
Wed 5/112:20 pmSTL - HEL
1 stop17h 55mAmerican Airlines
Wed 5/83:55 pmHEL - STL
1 stop13h 52mAmerican Airlines
Deal found 5/1$1,261
Sat 5/45:25 pmSTL - HEL
1 stop12h 50mMultiple Airlines
Tue 5/214:00 pmHEL - STL
1 stop13h 47mMultiple Airlines
Deal found 5/2$1,311
Tue 5/285:31 pmSTL - HEL
2 stops17h 14mUnited Airlines
Tue 6/41:25 pmHEL - STL
1 stop32h 05mUnited Airlines
Deal found 5/1$1,316

One-way flights to Helsinki from St. Louis

Search for one-way flight options from St. Louis to Helsinki. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 2, 2024.
Some of the best available deals we've found on one-way flights from St. Louis to Helsinki. Users in need of a round-trip flight from St. Louis to Helsinki instead should update the search form at the top of page.
Sat 8/39:29 pmSTL - HEL
3 stops52h 11mMultiple Airlines
Deal found 5/1$543
Sat 8/311:34 amSTL - HEL
2 stops28h 06mMultiple Airlines
Deal found 5/1$564
Sat 8/35:30 pmSTL - HEL
1 stop33h 15mAmerican Airlines
Deal found 5/1$4,392

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 2,864,334 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,199 - $4,142

Route

Depart

Return

Price

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Tue 5/28

2 stops20h 40m

Helsinki-Vantaa

Tue 6/4

2 stops22h 54m

$1,199

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

2 stops21h 15m

Helsinki-Vantaa

Thu 6/27

2 stops25h 03m

$1,249

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Tue 5/28

2 stops17h 14m

Helsinki-Vantaa

Tue 6/4

1 stop32h 05m

$1,316

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Tue 5/28

1 stop13h 07m

Helsinki-Vantaa

Tue 6/4

1 stop13h 47m

$1,456

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

1 stop18h 57m

Helsinki-Vantaa

Thu 6/27

1 stop23h 16m

$1,506

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

2 stops17h 16m

Helsinki-Vantaa

Thu 6/27

1 stop15h 59m

$1,511

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

3 stops34h 50m

Helsinki-Vantaa

Thu 6/27

3 stops28h 00m

$1,831

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

2 stops18h 31m

Helsinki-Vantaa

Thu 6/27

1 stop18h 32m

$3,660

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/14

2 stops16h 45m

Helsinki-Vantaa

Thu 6/27

3 stops21h 01m

$4,142

Flights are sorted by cheapest first

Deals found on 5/1

When is the cheapest time to fly from St. Louis to Helsinki?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Helsinki. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Helsinki flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Helsinki by month

Plan your trip from St. Louis to Helsinki by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Helsinki is currently $1,833 while a round-trip flight costs $1,986. Price data was last updated on April 28, 2024.

Currently, January is the cheapest month in which you can book a flight from St. Louis to Helsinki (average of $628). Flying from St. Louis to Helsinki in June is currently the most expensive (average of $1,332). 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.

January

$628

February

$671

March

$704

April

$674

May

$776

June

$1,332

July

$1,171

August

$911

September

$725

October

$673

November

$651

December

$718

Temperature and rainfall in Helsinki by month

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

HEL

Temperature

21.2 - 60.8 °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 May 2, 2024.
See what other customers who have flown with Delta, American Airlines and British Airways from St. Louis to Helsinki have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.1
Very good
10,861 reviews
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Finnair
7.8
Good
1,376 reviews
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
11,142 reviews
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,769 reviews
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air Canada
7.0
Good
6,891 reviews
Delta
8.1
Very good
10,861 reviews
Check prices

Comfort

7.9

Crew

8.6

Boarding

8.2

Entertainment

8.0

Food

7.4

Overall

8.1

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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.

  • Can I find flights from St. Louis to Helsinki for under $1,200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Helsinki for under $1,200. The cheapest flight booked recently is on Delta for just $1,199, but on average you can expect to pay $2,266.

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

    Delta, at $1,199, was found to be the cheapest airline from St. Louis to Helsinki.Alternate airlines to your destination round-trip include United Airlines and Finnair.

  • What are the most popular airlines that fly from St. Louis to Helsinki?

    When booking a flight from St. Louis to Helsinki, you may want to consider flying on American Airlines, Finnair or British Airways as they are the most popular for this route.

  • What does STL to HEL mean?

    Lambert-St Louis Airport is STL and Helsinki-Vantaa Airport is HEL. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from St. Louis to Helsinki that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Helsinki flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Helsinki with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Helsinki flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from St. Louis to Helsinki that allow pets onboard?

    Many airlines flying from St. Louis to Helsinki offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Helsinki?

    Yes, you can often find last-minute deals on St. Louis to Helsinki flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Helsinki flight deals updated?

    The St. Louis to Helsinki flight deals you see on this page were last updated on 5/2.

See more FAQs

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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 7 airlines flying from St. Louis to Helsinki

Discover the top 7 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 2,864,334 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$507Average$1,229FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest$528Average$528FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest$559Average$896FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest$692Average$1,066FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest$711Average$1,260FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$890Average$1,473FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$932Average$1,531FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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Search flights from St. Louis to Helsinki by cabin class

Find flights from St. Louis to Helsinki, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Helsinki?

Deals for St. Louis to Helsinki flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Helsinki?

Cheapflights simply makes it quick and affordable to book flights from St. Louis to Helsinki by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from St. Louis to Helsinki with no change fees?

Certainly. Search results for flights to Helsinki from St. Louis shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from St. Louis to Helsinki become cheaper?

Of course! You can now track prices for flights from St. Louis to Helsinki and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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