Cheap Flights from St. Louis (STL) to Frankfurt (HHN)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Frankfurt (HHN-Frankfurt - Hahn)

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Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN) cost?
Secure a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN) 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 Frankfurt - Hahn Airport (HHN)?
is the cheapest month to fly from STL to HHN. Traveling during quieter months is often the key to finding better deals on flights.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to HHN flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to HHN?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary 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 Frankfurt - Hahn Airport (HHN)?
Choose a flight from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**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 Frankfurt - Hahn Airport (HHN) last-minute?
Holding off until just before your trip to book a ticket from STL to HHN generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for the best chance of landing a bargain.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Frankfurt - Hahn Airport (HHN)?
If you booked your STL to HHN flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Frankfurt - Hahn
Distance
4535 mi

Book with confidence

St. Louis to Frankfurt Flights

The cheapest times to fly from St. Louis to Frankfurt

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

 

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

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

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 Frankfurt 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 Frankfurt 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 Frankfurt 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 Frankfurt Flights

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*Available to One Key members.