Cheap flights from St. Louis (STL) to Helsinki (HEL) from $400

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 7/8. 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
Apr 23 — Apr 301

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 April 18, 2024.

Popular in

June

Cheapest in

October

Round-trip from

$628

One-way from

$591
High demand for flights, 31% potential price rise
Best time to find cheap flights, 46% potential price drop
From Lambert-St Louis to Helsinki-Vantaa
One-way flight from Lambert-St Louis to Helsinki-Vantaa

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 United Airlines flights from St. Louis to Helsinki

Explore cheap flight options specifically provided by United 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 3,192,047 searches. Data last updated April 18, 2024.
Consider these cheap United Airlines flights we've found departing from St. Louis to Helsinki. It's recommended that users confirm their flight details before booking.
Thu 6/206:30 amSTL - HEL
2 stops28h 15mUnited Airlines
Thu 6/271:25 pmHEL - STL
1 stop32h 05mUnited Airlines
Deal found 4/17$1,465
Wed 7/38:25 amSTL - HEL
2 stops25h 00mUnited Airlines
Thu 7/186:20 amHEL - STL
3 stops23h 54mUnited Airlines
Deal found 4/16$1,669

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 3,192,047 searches. Data last updated April 18, 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.
Wed 7/39:47 amSTL - HEL
1 stop20h 28mAmerican Airlines
Thu 7/187:35 amHEL - STL
2 stops22h 24mAmerican Airlines
Deal found 4/16$1,483
Thu 6/207:00 amSTL - HEL
1 stop19h 45mAmerican Airlines
Thu 6/2712:25 pmHEL - STL
1 stop18h 32mAmerican Airlines
Deal found 4/17$1,506
Wed 7/31:47 pmSTL - HEL
1 stop16h 28mAmerican Airlines
Thu 7/1812:25 pmHEL - STL
1 stop16h 22mAmerican Airlines
Deal found 4/16$1,531

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 3,192,047 searches. Data last updated April 18, 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 11/133:55 pmSTL - HEL
1 stop13h 15mUnited Airlines
Sun 11/177:00 amHEL - STL
2 stops20h 25mUnited Airlines
Deal found 4/16$720
Wed 11/131:00 pmSTL - HEL
2 stops16h 10mUnited Airlines
Sun 11/177:00 amHEL - STL
2 stops20h 25mUnited Airlines
Deal found 4/16$724
Wed 11/133:55 pmSTL - HEL
1 stop13h 15mLufthansa
Sun 11/177:00 amHEL - STL
1 stop14h 55mLufthansa
Deal found 4/17$734
Fri 11/221:27 pmSTL - HEL
2 stops27h 33mMultiple Airlines
Sat 11/302:00 pmHEL - STL
2 stops27h 53mMultiple Airlines
Deal found 4/17$953
Fri 11/221:27 pmSTL - HEL
2 stops27h 33mLufthansa
Sat 11/302:00 pmHEL - STL
1 stop31h 55mLufthansa
Deal found 4/17$1,092
Fri 11/223:55 pmSTL - HEL
1 stop17h 00mLufthansa
Sat 11/302:00 pmHEL - STL
1 stop31h 55mLufthansa
Deal found 4/17$1,190
Wed 7/32:16 pmSTL - HEL
2 stops18h 24mDelta
Thu 7/186:40 amHEL - STL
2 stops21h 56mDelta
Deal found 4/16$1,299
Thu 6/2010:10 amSTL - HEL
2 stops17h 50mMultiple Airlines
Thu 6/276:05 amHEL - STL
2 stops41h 16mMultiple Airlines
Deal found 4/17$1,342
Thu 6/204:05 pmSTL - HEL
2 stops25h 10mMultiple Airlines
Fri 6/286:05 amHEL - STL
2 stops17h 35mMultiple Airlines
Deal found 4/17$1,429

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 3,192,047 searches. Data last updated April 18, 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.
Mon 7/88:00 pmSTL - HEL
2 stops50h 50mMultiple Airlines
Deal found 4/17$400
Mon 7/89:20 pmSTL - HEL
3 stops49h 30mMultiple Airlines
Deal found 4/17$434
Fri 7/56:42 pmSTL - HEL
2 stops59h 58mMultiple Airlines
Deal found 4/17$568
Fri 7/56:42 pmSTL - HEL
3 stops54h 33mMultiple Airlines
Deal found 4/17$588
Thu 7/118:49 pmSTL - HEL
3 stops55h 01mMultiple Airlines
Deal found 4/17$591
Thu 7/112:10 pmSTL - HEL
2 stops18h 30mDelta
Deal found 4/17$789
Mon 7/85:30 pmSTL - HEL
1 stop33h 15mAmerican Airlines
Deal found 4/17$958
Thu 7/1110:19 amSTL - HEL
1 stop16h 26mAmerican Airlines
Deal found 4/17$1,042
Fri 7/53:25 pmSTL - HEL
1 stop18h 00mLufthansa
Deal found 4/17$1,168

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 3,192,047 searches. Data last updated April 18, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,299 - $2,106

Route

Depart

Return

Price

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/3

2 stops18h 24m

Helsinki-Vantaa

Thu 7/18

2 stops21h 56m

$1,299

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 6/20

2 stops17h 50m

Helsinki-Vantaa

Thu 6/27

2 stops41h 16m

$1,342

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 6/20

2 stops25h 10m

Helsinki-Vantaa

Fri 6/28

2 stops17h 35m

$1,429

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 6/20

2 stops28h 15m

Helsinki-Vantaa

Thu 6/27

1 stop32h 05m

$1,465

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Wed 7/3

1 stop20h 28m

Helsinki-Vantaa

Thu 7/18

2 stops22h 24m

$1,483

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 6/20

1 stop19h 45m

Helsinki-Vantaa

Thu 6/27

1 stop18h 32m

$1,506

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/21

2 stops17h 14m

Helsinki-Vantaa

Wed 6/26

2 stops56h 45m

$1,809

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/21

1 stop12h 07m

Helsinki-Vantaa

Wed 6/26

2 stops22h 02m

$1,817

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 6/20

2 stops17h 50m

Helsinki-Vantaa

Thu 6/27

3 stops35h 25m

$2,106

Flights are sorted by cheapest first

Deals found on 4/16

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 14, 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.
Search Deals

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 $726 while a round-trip flight costs $1,584. Price data was last updated on April 14, 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 $1,329). 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

$690

May

$858

June

$1,329

July

$1,152

August

$911

September

$713

October

$673

November

$659

December

$723

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 April 18, 2024.
See what other customers who have flown with United Airlines, American Airlines and Finnair 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.
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

8.1
Very good
11,104 reviews
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.8
Good
1,388 reviews
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.4
Good
11,341 reviews
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.3
Good
14,963 reviews
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

7.0
Good
6,836 reviews
8.1
Very good
11,104 reviews

Food

7.5

Boarding

8.2

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Reviews

1 / 10

Terrible flight crew that skipped our row for service multiple times.

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 $1,300 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Helsinki for under $1,300. The cheapest flight booked recently is on Delta for just $1,299, but on average you can expect to pay $1,693.

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

    Delta, at $1,299, was found to be the cheapest airline from St. Louis to Helsinki.Alternate airlines to your destination round-trip include United Airlines and American Airlines.

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

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $789. However, be on the lookout for offers from American Airlines and Lufthansa, as they are both options that can get you from St. Louis to Helsinki for a low price.

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

  • 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 4/17.

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.

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 3,192,047 searches. Data last updated April 18, 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$559Average$978FlexibilityNo cancel feeOn-time76%
Search Finnair flights
LufthansaCheapest$711Average$1,260FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest$868Average$1,473FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest$932Average$1,529FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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.

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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