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$483+ Cheap flights from St. Louis (STL) to Finland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HEL
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
1 adult, Economy
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Cheap flight deals from St. Louis to Finland

Best flights from St. Louis to Finland
Discover carefully curated flight deals from St. Louis to Finland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 30, 2025.

This Finnair deal was found by Cheapflights users on 12/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/138:53 amSTL - HEL
1 stop21h 22mMultiple Airlines
Fri 4/2412:35 pmHEL - STL
1 stop13h 42mMultiple Airlines
Deal found 12/30$483
This Delta deal was found by Cheapflights users on 12/28. 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.
Sun 1/256:57 pmSTL - HEL
2 stops37h 28mDelta
Tue 2/107:00 amHEL - STL
2 stops21h 37mDelta
Deal found 12/28$488
This United Airlines deal was found by Cheapflights users on 12/30. 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.
Mon 4/138:54 amSTL - HEL
2 stops26h 01mUnited Airlines
Fri 4/246:55 amHEL - STL
1 stop14h 30mUnited Airlines
Deal found 12/30$488
This Delta deal was found by Cheapflights users on 12/30. 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.
Mon 4/1311:43 amSTL - HEL
2 stops20h 57mDelta
Fri 4/247:00 amHEL - STL
2 stops21h 38mDelta
Deal found 12/30$496
This Delta deal was found by Cheapflights users on 12/28. 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.
Tue 2/105:56 pmSTL - HEL
2 stops14h 29mDelta
Wed 2/182:05 pmHEL - STL
2 stops28h 57mDelta
Deal found 12/28$497
This United Airlines deal was found by Cheapflights users on 12/29. 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 4/26:05 pmSTL - HEL
2 stops23h 30mUnited Airlines
Sun 4/56:45 amHEL - STL
2 stops23h 43mUnited Airlines
Deal found 12/29$599
This Delta deal was found by Cheapflights users on 12/28. 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.
Mon 2/99:59 amSTL - HEL
2 stops22h 26mDelta
Wed 2/182:05 pmHEL - STL
2 stops35h 37mDelta
Deal found 12/28$497
This Delta deal was found by Cheapflights users on 12/28. 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.
Tue 2/105:56 pmSTL - HEL
2 stops14h 29mDelta
Mon 2/162:05 pmHEL - STL
2 stops27h 01mDelta
Deal found 12/28$497
This Delta deal was found by Cheapflights users on 12/28. 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 2/116:00 amSTL - HEL
2 stops26h 25mDelta
Wed 2/187:00 amHEL - STL
2 stops24h 36mDelta
Deal found 12/28$497
This Delta deal was found by Cheapflights users on 12/28. 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.
Mon 2/99:59 amSTL - HEL
2 stops22h 26mDelta
Tue 2/177:00 amHEL - STL
2 stops21h 43mDelta
Deal found 12/28$497
This Delta deal was found by Cheapflights users on 12/28. 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 2/116:00 amSTL - HEL
2 stops26h 25mDelta
Mon 2/162:05 pmHEL - STL
2 stops28h 57mDelta
Deal found 12/28$497
This Delta deal was found by Cheapflights users on 12/28. 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 2/116:00 amSTL - HEL
2 stops26h 25mDelta
Tue 2/177:00 amHEL - STL
2 stops21h 43mDelta
Deal found 12/28$497

Find flight deals from St. Louis to Finland

Keep the following information in mind while searching for St. Louis to Finland flight deals. Data was last updated December 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$488
(Delta)

Popular in

May

Cheapest in

February

Average price

$636
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
From Lambert-St Louis to Finland
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($206 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Finland 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 2,558,603 searches. Data last updated December 30, 2025.
Use the filters below to find and compare flights from St. Louis to Finland that are best for you.

Fly from

St. Louis

Fly to

Finland

Route

Depart

Return

Price

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 4/13

8:53 am-2:15 pm

1 stop21h 22m

Helsinki-Vantaa

Fri 4/24

12:35 pm-6:17 pm

1 stop13h 42m

$483

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Sun 1/25

6:57 pm-4:25 pm

2 stops37h 28m

Helsinki-Vantaa

Tue 2/10

7:00 am-8:37 pm

2 stops21h 37m

$488

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 4/13

8:54 am-6:55 pm

2 stops26h 01m

Helsinki-Vantaa

Fri 4/24

6:55 am-1:25 pm

1 stop14h 30m

$488

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 4/13

11:43 am-4:40 pm

2 stops20h 57m

Helsinki-Vantaa

Fri 4/24

7:00 am-8:38 pm

2 stops21h 38m

$496

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 2/10

5:56 pm-4:25 pm

2 stops14h 29m

Helsinki-Vantaa

Wed 2/18

2:05 pm-11:02 am

2 stops28h 57m

$497

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 2/9

9:59 am-4:25 pm

2 stops22h 26m

Helsinki-Vantaa

Wed 2/18

2:05 pm-5:42 pm

2 stops35h 37m

$497

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Tue 2/10

5:56 pm-4:25 pm

2 stops14h 29m

Helsinki-Vantaa

Mon 2/16

2:05 pm-9:06 am

2 stops27h 01m

$497

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 2/11

6:00 am-4:25 pm

2 stops26h 25m

Helsinki-Vantaa

Wed 2/18

7:00 am-11:36 pm

2 stops24h 36m

$497

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Mon 2/9

9:59 am-4:25 pm

2 stops22h 26m

Helsinki-Vantaa

Tue 2/17

7:00 am-8:43 pm

2 stops21h 43m

$497

St. LouisHelsinki

STL - HEL

STLHEL

Lambert-St Louis

Wed 2/11

6:00 am-4:25 pm

2 stops26h 25m

Helsinki-Vantaa

Mon 2/16

2:05 pm-11:02 am

2 stops28h 57m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 12 results
1
2

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

Have a flexible travel schedule? Discover the best time to fly to Finland 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.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Finland
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Finland

Get insights into the airlines that provide service to Finland. 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 Finland. Reviews last updated December 30, 2025.
Peruse reviews from past customers who have flown with American Airlines from St. Louis to Finland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,073 reviews

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit
American Airlines
7.2
Good
11,073 reviews
American Airlines
7.2
Good
11,073 reviews

Boarding

7.5

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
10.0
Excellent

Jeremy,Dec 2025

OKC - CLT

Was an okay flight. Had extra seat empty beside me so was able to stretch a bit

Related info for your journey

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

  • What airport do you fly from for flights from St. Louis to Finland?

    For a flight from St. Louis to Finland, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How long is the flight from St. Louis to Finland?

    Airlines like Delta and United Airlines fly from St. Louis to Finland in about 26h 01m. The time it takes to get you to your destination can typically vary by up to 11h 27m. The distance from St. Louis to Finland is about 4678 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

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

See more FAQs

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Alternative routes for St. Louis to Finland

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Top airline flying from St. Louis to Finland

Discover the top airline that operate flights from St. Louis to Finland. 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 2,558,603 searches. Data last updated December 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$481Average$764FlexibilityNo cancel feeOn-time71%

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