Cheap Flights from St. Louis (STL) to Kassel (KSF)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Kassel (KSF-Calden)

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF) cost?
Lock in a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF) 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 Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF)?
is the most affordable month to fly from STL to KSF. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF)?
To find the cheapest airline flying from STL to KSF, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF)?
You'll have to book a flight with a layover when traveling from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from STL to KSF?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF) last-minute?
Last-minute fares from STL to KSF are usually more expensive. To lock in the best rates, start looking for flights early. That being said, if your travel plans are flexible, you may land a cheap ticket just before your departure.
Is it cheaper to book a STL to KSF flight and hotel package?
You'll typically save money by securing a STL to KSF flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your preferred accommodations and flights, you can add extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Calden Airport (KSF)?
In most instances, you can modify or cancel your STL to KSF flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more details, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Calden
Distance
4559 mi

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St. Louis to Kassel Flights

The cheapest times to fly from St. Louis to Kassel

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 St. Louis to Kassel are during the month of . You can find some of the cheapest flights from St. Louis to Kassel with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Kassel: 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 St. Louis to Kassel

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 St. Louis to Kassel in 2025. 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 St. Louis to Kassel 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 St. Louis to Kassel 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.

 

St. Louis to Kassel Flights

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*Available to One Key members.