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Cheap flights from St. Louis (STL) to Helsinki (HEL) from $735

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 7/28. 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
Jun 18 — Jun 251
From?
To?
Tue 6/18
Tue 6/25
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 June 13, 2024.

Popular in

June

Cheapest in

October

Average price

$1,521

Round-trip from

$631
High demand for flights, 29% potential price rise
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Best time to find cheap flights, 51% potential price drop
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Average for round-trip flights in June 2024
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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 Wednesday can be a cost-effective option. It’s possible to save up to 38% 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 $1,075. You can even find prices in October for less than $1,075, 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 41%.

What is the cheapest time of day to fly from STL to 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 St. Louis to Helsinki flights in June & July 2024

Find cheap flight options from St. Louis to Helsinki specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,214,720 searches. Prices were last updated on June 13, 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.
Sun 7/1410:08 amSTL - HEL
2 stops22h 32mDelta
Tue 7/237:00 amHEL - STL
2 stops22h 00mDelta
Deal found 6/12$1,113
Sun 7/142:56 pmSTL - HEL
1 stop15h 19mAmerican Airlines
Tue 7/235:20 pmHEL - STL
1 stop23h 19mAmerican Airlines
Deal found 6/12$1,251
Sun 7/141:46 pmSTL - HEL
1 stop16h 29mAmerican Airlines
Tue 7/235:20 pmHEL - STL
2 stops28h 54mAmerican Airlines
Deal found 6/12$1,256
Thu 7/48:25 amSTL - HEL
2 stops26h 20mLufthansa
Sun 7/76:20 amHEL - STL
1 stop15h 10mLufthansa
Deal found 6/12$1,457
Fri 6/286:00 amSTL - HEL
2 stops22h 20mBritish Airways
Sun 7/77:30 pmHEL - STL
2 stops34h 24mBritish Airways
Deal found 6/12$1,459
Fri 6/285:03 pmSTL - HEL
2 stops41h 42mUnited Airlines
Sun 7/76:20 amHEL - STL
1 stop15h 10mUnited Airlines
Deal found 6/12$1,474
Thu 7/412:45 pmSTL - HEL
1 stop14h 00mAmerican Airlines
Sun 7/73:55 pmHEL - STL
1 stop13h 59mAmerican Airlines
Deal found 6/12$1,514
Thu 7/49:44 amSTL - HEL
2 stops45h 31mBritish Airways
Sun 7/77:30 pmHEL - STL
2 stops34h 24mBritish Airways
Deal found 6/12$1,520
Fri 6/286:08 pmSTL - HEL
1 stop12h 07mMultiple Airlines
Sun 7/73:55 pmHEL - STL
1 stop13h 59mMultiple Airlines
Deal found 6/12$1,619

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 3,214,720 searches. Data last updated June 13, 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.
Sun 7/1410:08 amSTL - HEL
2 stops22h 32mDelta
Tue 7/237:00 amHEL - STL
2 stops22h 00mDelta
Deal found 6/12$1,113
Sun 7/142:56 pmSTL - HEL
1 stop15h 19mAmerican Airlines
Tue 7/235:20 pmHEL - STL
1 stop23h 19mAmerican Airlines
Deal found 6/12$1,251
Sun 7/141:46 pmSTL - HEL
1 stop16h 29mAmerican Airlines
Tue 7/235:20 pmHEL - STL
2 stops28h 54mAmerican Airlines
Deal found 6/12$1,256
Thu 7/48:25 amSTL - HEL
2 stops26h 20mLufthansa
Sun 7/76:20 amHEL - STL
1 stop15h 10mLufthansa
Deal found 6/12$1,457
Fri 6/286:00 amSTL - HEL
2 stops22h 20mBritish Airways
Sun 7/77:30 pmHEL - STL
2 stops34h 24mBritish Airways
Deal found 6/12$1,459
Fri 6/285:03 pmSTL - HEL
2 stops41h 42mUnited Airlines
Sun 7/76:20 amHEL - STL
1 stop15h 10mUnited Airlines
Deal found 6/12$1,474
Thu 7/412:45 pmSTL - HEL
1 stop14h 00mAmerican Airlines
Sun 7/73:55 pmHEL - STL
1 stop13h 59mAmerican Airlines
Deal found 6/12$1,514
Thu 7/49:44 amSTL - HEL
2 stops45h 31mBritish Airways
Sun 7/77:30 pmHEL - STL
2 stops34h 24mBritish Airways
Deal found 6/12$1,520
Sat 11/164:09 pmSTL - HEL
1 stop34h 41mAmerican Airlines
Sun 11/244:55 pmHEL - STL
2 stops24h 20mAmerican Airlines
Deal found 6/12$1,528

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 3,214,720 searches. Data last updated June 13, 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.
Sun 7/2810:10 amSTL - HEL
3 stops31h 05mMultiple Airlines
Deal found 6/12$735
Sun 7/286:09 pmSTL - HEL
1 stop12h 06mMultiple Airlines
Deal found 6/12$792

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 3,214,720 searches. Data last updated June 13, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,113 - $2,301

Route

Depart

Return

Price

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sun 7/14

2 stops22h 32m

Helsinki-Vantaa

Tue 7/23

2 stops22h 00m

$1,113

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sun 7/14

1 stop15h 19m

Helsinki-Vantaa

Tue 7/23

1 stop23h 19m

$1,251

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sun 7/14

1 stop16h 29m

Helsinki-Vantaa

Tue 7/23

2 stops28h 54m

$1,256

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 7/4

2 stops26h 20m

Helsinki-Vantaa

Sun 7/7

1 stop15h 10m

$1,457

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/28

2 stops22h 20m

Helsinki-Vantaa

Sun 7/7

2 stops34h 24m

$1,459

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/28

2 stops41h 42m

Helsinki-Vantaa

Sun 7/7

1 stop15h 10m

$1,474

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Thu 7/4

2 stops45h 31m

Helsinki-Vantaa

Sun 7/7

2 stops34h 24m

$1,520

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Fri 6/28

1 stop12h 07m

Helsinki-Vantaa

Sun 7/7

1 stop13h 59m

$1,619

Lambert-St LouisHelsinki-Vantaa

STL - HEL

STLHEL

Lambert-St Louis

Sat 11/16

1 stop14h 52m

Helsinki-Vantaa

Sun 11/24

1 stop13h 51m

$2,301

Flights are sorted by cheapest first

Deals found on 6/12

What is the cheapest day 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 June 9, 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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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.

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

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 June 13, 2024.
See what other customers who have flown with British Airways, United Airlines and American Airlines 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
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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
8.0
Very good
10,000 reviews
Delta
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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
7.7
Good
1,360 reviews
Delta
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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
10,000 reviews
Delta
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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
10,000 reviews
Delta
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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.

Lufthansa
7.0
Good
7,483 reviews
Delta
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.6

Entertainment

8.0

Food

7.4

Boarding

8.2

Comfort

7.9

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 $1,113, but on average you can expect to pay $1,520.

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

    Delta, at $1,113, was found to be the cheapest airline from St. Louis to Helsinki.Alternate airlines to your destination round-trip include American Airlines and Lufthansa.

  • 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 6/12.

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Helsinki (average of $631). Flying from St. Louis to Helsinki in June is currently the most expensive (average of $1,233). 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

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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.

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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 3,214,720 searches. Data last updated June 13, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$507Average$1,198FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$528Average$590FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$559Average$896FlexibilityNo cancel feeOn-time69%
FinnairCheapest$705Average$1,071FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$707Average$1,260FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$806Average$1,531FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$890Average$1,473FlexibilityNo cancel feeOn-time70%
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