HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$475+ Cheap flights from Billund (BLL) to St. Louis (STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — STL
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billund to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Billund to St. Louis

Cheapest flights from Billund to St. Louis
Explore the most affordable flight options available from Billund to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

This British Airways deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:40 pmBLL - STL
2 stops34h 15mBritish Airways
Mon 12/228:01 pmSTL - BLL
2 stops33h 29mBritish Airways
Deal found 12/2$1,147
This Expedia deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:25 amBLL - STL
2 stops17h 22mMultiple Airlines
Mon 12/223:17 pmSTL - BLL
2 stops15h 33mMultiple Airlines
Deal found 12/2$1,385
This Ticket deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/182:00 pmBLL - STL
1 stop30h 55mLufthansa
Mon 12/226:35 pmSTL - BLL
2 stops36h 05mLufthansa
Deal found 12/2$2,403
This Air Canada deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:30 amBLL - STL
3 stops22h 13mAir Canada
Mon 12/2211:05 amSTL - BLL
3 stops19h 15mAir Canada
Deal found 12/2$2,440

Find flight deals from Billund to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Billund (BLL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 3, 2025.

Round-trip from

$475
(Lufthansa)

Popular in

July

Cheapest in

March

Average price

$830
From Billund to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billund to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 3, 2025.
Use the filters below to find and compare flights from Billund to St. Louis that are best for you.

Fly from

Billund

Fly to

St. Louis

Route

Depart

Return

Price

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 1/21

6:35 am-1:55 pm

1 stop14h 20m

Lambert-St Louis

Sun 1/25

3:50 pm-1:30 pm

1 stop14h 40m

$475

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 1/21

6:35 am-1:55 pm

1 stop14h 20m

Lambert-St Louis

Sun 1/25

3:50 pm-10:00 am

1 stop11h 10m

$475

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/18

8:40 pm-11:55 pm

2 stops34h 15m

Lambert-St Louis

Mon 12/22

8:01 pm-12:30 pm

2 stops33h 29m

$1,147

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/18

10:25 am-8:47 pm

2 stops17h 22m

Lambert-St Louis

Mon 12/22

3:17 pm-1:50 pm

2 stops15h 33m

$1,385

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/18

2:00 pm-1:55 pm

1 stop30h 55m

Lambert-St Louis

Mon 12/22

6:35 pm-1:40 pm

2 stops36h 05m

$2,403

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/30

Best time to book a flight from Billund to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Billund with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Billund to St. Louis

What is the cheapest month to book a flight from Billund to St. Louis?

Currently, March is the cheapest month in which you can book a flight from Billund to St. Louis (average of $357). Flying from Billund to St. Louis in May is currently the most expensive (average of $708). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Billund to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Billund to St. Louis?

    For as low as $475, Lufthansa can have you in St. Louis from Billund in 14h 20m. Airlines will cover a distance of 4391 mi.

  • Can I find deals for flights from Billund to St. Louis that include hotel bookings?

    Yes. In addition to deals on Billund to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billund to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billund to St. Louis.

  • Can I find deals for business class flights from Billund to St. Louis?

    Yes. Cheapflights offers flight deals from Billund to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Billund to St. Louis?

    Currently, March is the cheapest month in which you can book a flight from Billund to St. Louis (average of $357). Flying from Billund to St. Louis in May is currently the most expensive (average of $708). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Billund to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Copenhagen to St. Louis flights
Copenhagen to Kansas City flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.