$538 Cheap Flights from Billund (BLL) to St. Louis (STL)

View $538 flight on Tue, Jul 7, 2026Opens in a new window

Popular airlines from Billund (BLL) to St. Louis Lambert Intl. Airport (STL)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Billund to St. Louis (BLL-STL)

Prices were available within the past 7 days and start at $538 for one-way flights and $565 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, Jan 7 - Sat, Mar 28
BLL
Billund
STL
St. Louis
$565 Roundtrip, found 1 hour ago
$565
Roundtrip
found 1 hour ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Sat, Mar 28, priced at $565 found 1 hour ago
Lufthansa
Wed, Jan 7 - Wed, Sep 2
BLL
Billund
STL
St. Louis
$603 Roundtrip, found 6 days ago
$603
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Wed, Sep 2, priced at $603 found 6 days ago
Lufthansa
Wed, Jan 7 - Sat, Mar 28
BLL
Billund
STL
St. Louis
$609 Roundtrip, found 1 hour ago
$609
Roundtrip
found 1 hour ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Sat, Mar 28, priced at $609 found 1 hour ago
Lufthansa
Wed, Jan 7 - Mon, Aug 31
BLL
Billund
STL
St. Louis
$621 Roundtrip, found 6 days ago
$621
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Mon, Aug 31, priced at $621 found 6 days ago
Lufthansa
Wed, Jan 7 - Wed, Sep 2
BLL
Billund
STL
St. Louis
$626 Roundtrip, found 6 days ago
$626
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Wed, Sep 2, priced at $626 found 6 days ago
Lufthansa
Wed, Jan 7 - Wed, Sep 2
BLL
Billund
STL
St. Louis
$632 Roundtrip, found 6 days ago
$632
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Wed, Sep 2, priced at $632 found 6 days ago
Lufthansa
Wed, Jan 7 - Wed, Jul 22
BLL
Billund
STL
St. Louis
$646 Roundtrip, found 6 days ago
$646
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Wed, Jan 7 from Billund to St. Louis, returning Wed, Jul 22, priced at $646 found 6 days ago
Air Canada
Wed, Jan 7 - Wed, Sep 2
BLL
Billund
STL
St. Louis
$719 Roundtrip, found 6 days ago
$719
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jan 7 from Billund to St. Louis, returning Wed, Sep 2, priced at $719 found 6 days ago
British Airways
Fri, Jan 9 - Sun, Mar 29
BLL
Billund
STL
St. Louis
$744 Roundtrip, found 6 days ago
$744
Roundtrip
found 6 days ago
Select British Airways flight, departing Fri, Jan 9 from Billund to St. Louis, returning Sun, Mar 29, priced at $744 found 6 days ago
Scandinavian Airlines
Fri, Jan 9 - Sun, Mar 29
BLL
Billund
STL
St. Louis
$1,184 Roundtrip, found 6 days ago
$1,184
Roundtrip
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, Jan 9 from Billund to St. Louis, returning Sun, Mar 29, priced at $1,184 found 6 days ago

Frequently asked questions

How much does a flight from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL) cost?
Secure a cheap one-way flight from $538 or cheap return flight from $565 from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in January can help you save, as it's the cheapest month for flights between BLL and STL. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from BLL to STL. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BLL 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 airline, time of year 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 Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this 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 Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your trip to book a ticket from BLL to STL generally means paying more. While it's possible to find some last-minute deals, they're not always guaranteed. Be flexible with your travel plans to maximize your chances of snagging a bargain.
Is it cheaper to book a BLL to STL flight and hotel package?
Booking a BLL to STL flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our wide range of accommodations and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Billund Airport (BLL) to Lambert-St. Louis Intl. Airport (STL)?
In most cases, you can modify or cancel your BLL to STL flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, go to our Customer Service portal.

Travel information

Origin airport
Billund
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$565
Distance
4393 mi

Book with confidence

Billund to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Billund 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 Billund 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 Billund to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $538 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 Billund 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 Billund 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.

 

Billund to St. Louis Flights

Explore a world of travel with Expedia

*Available to One Key members.