Cheap Flights from Kemi (KEM) to St. Louis (STL)

Popular airlines from Kemi (KEM-Kemi - Tornio) to St. Louis Lambert Intl. Airport (STL)

Flights from Kemi (KEM) to St. Louis (STL)
Origin airport
Kemi - Tornio
Destination airport
Lambert-St. Louis Intl.
Distance
4433 mi

Kemi to St. Louis Flights

The cheapest times to fly from Kemi to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kemi to St. Louis are during the month of . You can find some of the cheapest flights from Kemi to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kemi to St. Louis

Sunday is one of the best days to book for cheap flights from Kemi to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Kemi to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kemi to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kemi to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kemi to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight or cheap return flight from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL)?
is the most affordable month to fly from KEM to STL. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from KEM to STL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily nonstop flights available from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from KEM to STL?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from KEM to STL right before your getaway is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a KEM to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a KEM to STL flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of travel planning. Simply pick your flights and select from our wide range of hotels, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Kemi - Tornio Airport (KEM) to Lambert-St. Louis Intl. Airport (STL)?
Typically, it's possible to reschedule or cancel your KEM to STL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.