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Cheap flights from St. Louis (STL) to Helsinki (HEL) from $1,298

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 6/7. 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 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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The best prices from Lambert-St Louis to Helsinki-Vantaa are usually found in October or November, booked 17 days in advance, depart on a Thursday or Tuesday and return on a Friday

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 6, 2024.

Popular in

June

Cheapest in

October

Average price

$1,526

Round-trip from

$631
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 50% 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.

How far in advance should I book a flight from St. Louis to Helsinki?

Find a great deal and save up to 79% by booking at least 18 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Helsinki within the next two weeks, with the cheapest ticket starting at $900.

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 $1,064. You can even find prices in October for less than $1,064, 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 43%.

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 3,050,429 searches. Prices were last updated on June 6, 2024.
Fri 6/710:15 amSTL - HEL
2 stops18h 25mUnited Airlines
Sun 6/912:45 pmHEL - STL
2 stops34h 56mUnited Airlines
Deal found 6/5$1,298
Fri 6/711:38 amSTL - HEL
2 stops21h 47mUnited Airlines
Sun 6/96:20 amHEL - STL
1 stop15h 10mUnited Airlines
Deal found 6/5$1,316
Fri 6/711:03 amSTL - HEL
1 stop18h 57mMultiple Airlines
Sun 6/93:55 pmHEL - STL
1 stop14h 07mMultiple Airlines
Deal found 6/5$1,765
Fri 6/73:07 pmSTL - HEL
2 stops26h 08mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,408
Fri 6/74:45 pmSTL - HEL
3 stops24h 30mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,436

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 3,050,429 searches. Data last updated June 6, 2024.
Fri 6/710:15 amSTL - HEL
2 stops18h 25mUnited Airlines
Sun 6/912:45 pmHEL - STL
2 stops34h 56mUnited Airlines
Deal found 6/5$1,298
Fri 6/711:38 amSTL - HEL
2 stops21h 47mUnited Airlines
Sun 6/96:20 amHEL - STL
1 stop15h 10mUnited Airlines
Deal found 6/5$1,316
Fri 6/711:03 amSTL - HEL
1 stop18h 57mMultiple Airlines
Sun 6/93:55 pmHEL - STL
1 stop14h 07mMultiple Airlines
Deal found 6/5$1,765
Fri 6/73:07 pmSTL - HEL
2 stops26h 08mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,408
Fri 6/74:45 pmSTL - HEL
3 stops24h 30mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,436

St. Louis to Helsinki flights leaving soon

Find last-minute flight options from St. Louis to Helsinki for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Fri 6/710:15 amSTL - HEL
2 stops18h 25mUnited Airlines
Sun 6/912:45 pmHEL - STL
2 stops34h 56mUnited Airlines
Deal found 6/5$1,298
Fri 6/711:38 amSTL - HEL
2 stops21h 47mUnited Airlines
Sun 6/96:20 amHEL - STL
1 stop15h 10mUnited Airlines
Deal found 6/5$1,316
Fri 6/711:03 amSTL - HEL
1 stop18h 57mMultiple Airlines
Sun 6/93:55 pmHEL - STL
1 stop14h 07mMultiple Airlines
Deal found 6/5$1,765
Fri 6/73:07 pmSTL - HEL
2 stops26h 08mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,408
Fri 6/74:45 pmSTL - HEL
3 stops24h 30mMultiple Airlines
Sun 6/93:05 pmHEL - STL
3 stops28h 25mMultiple Airlines
Deal found 6/5$2,436

How far ahead should I book a flight from St. Louis to Helsinki?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Helsinki. Price data was last updated on May 31, 2024.
The best time to book flights from St. Louis to Helsinki is 17 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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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 2, 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).

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.

  • Are there last-minute flights available from St. Louis to Helsinki for under $1,300?

    There are currently 5+ open flights from St. Louis to Helsinki within the next 7 days for less than $1,300.

  • 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 6/5.

  • 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 $1,255). 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.

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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 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$507Average$1,214FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$528Average$528FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$559Average$896FlexibilityNo cancel feeOn-time69%
FinnairCheapest$692Average$1,066FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$707Average$1,260FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$812Average$1,531FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$890Average$1,473FlexibilityNo cancel feeOn-time70%
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Search flights from St. Louis to Helsinki by cabin class

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