Cheap flights from St. Louis to Helsinki from $720
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Helsinki departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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American Airlines flights from St. Louis to Helsinki
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British Airways flights from St. Louis to Helsinki
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How to get the cheapest flight ticket from St. Louis to Helsinki
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between St. Louis and Helsinki?
What is the cheapest month to fly to Helsinki?
The month of November is, on average, the cheapest month to fly to Helsinki from St. Louis, with most prices found around $507. If you aren’t able to travel during the month of November, then book flights to Helsinki from St. Louis during March instead. Flights to Helsinki in March, while not as cheap as those in November, still average around $576.
What is the cheapest day to depart on your flight to Helsinki?
The cheapest day to depart on your flight to Helsinki is on a Tuesday when prices can be found for as low as $511. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Helsinki on a Wednesday will generally be more expensive and average around $1,482. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
When to book flights from St. Louis to Helsinki
Cheap St. Louis to Helsinki (STL to HEL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Helsinki
How far is Lambert-St Louis to Helsinki-Vantaa by plane?
The distance between Lambert-St Louis and Helsinki-Vantaa is about 4687.3 mi. 12h 51m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Helsinki-Vantaa Airport?
Prices for flights from Lambert-St Louis Airport to Helsinki-Vantaa Airport refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Helsinki-Vantaa Airport?
There are 4 operators available for flights from Lambert-St Louis Airport to Helsinki-Vantaa Airport as of April 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Helsinki-Vantaa Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Helsinki-Vantaa Airport.
What documentation or ID do you need to fly to Helsinki-Vantaa Airport?
The necessary travel and health documents for your Helsinki-Vantaa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Helsinki?
Based on momondo bookings for flights between St. Louis and Helsinki, the leading airline is American Airlines, making up 52% of the total bookings. Other popular airlines include British Airways with 17%, United Airlines with 16%, and Finnair with 15%.
Best airlines flying from St. Louis to Helsinki
Compare and see reviews for airlines that fly from St. Louis to Helsinki with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $479 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $495 | Free Cancellation | Rating 6.6 6,835 reviews | |||
| PriceFrom $506 | Free Cancellation | Rating 7.6 1,275 reviews | |||
| PriceFrom $576 | Free Cancellation | Rating 7.4 8,696 reviews |
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Why should I use momondo to find a flight deal from St. Louis to Helsinki?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Helsinki. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to Helsinki with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Helsinki from St. Louis with this policy.
How can momondo help me find flights from St. Louis to Helsinki?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Helsinki.
I’m not ready to book a flight from St. Louis to Helsinki right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to Helsinki flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.