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$533+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — STL
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Find 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 October 20, 2025.

This United Airlines deal was found by Cheapflights users on 10/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:45 amBLL - STL
2 stops22h 09mUnited Airlines
Fri 11/73:14 pmSTL - BLL
2 stops15h 06mUnited Airlines
Deal found 10/18$541
This Ticket deal was found by Cheapflights users on 10/19. 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.
Tue 11/410:25 amBLL - STL
2 stops18h 39mMultiple Airlines
Sat 11/810:20 amSTL - BLL
2 stops16h 15mMultiple Airlines
Deal found 10/19$555
This Flybillet deal was found by Cheapflights users on 10/19. 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 Flybillet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/42:15 pmBLL - STL
1 stop30h 40mLufthansa
Sat 11/86:43 pmSTL - BLL
2 stops32h 17mLufthansa
Deal found 10/19$603
This Flysmarter deal was found by Cheapflights users on 10/19. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/41:10 pmBLL - STL
3 stops30h 27mBritish Airways
Sat 11/88:39 amSTL - BLL
2 stops20h 51mBritish Airways
Deal found 10/19$1,091
This Flysmarter deal was found by Cheapflights users on 10/18. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/31:10 pmBLL - STL
3 stops26h 45mBritish Airways
Fri 11/711:35 amSTL - BLL
2 stops17h 45mBritish Airways
Deal found 10/18$1,187
This Air Canada deal was found by Cheapflights users on 10/18. 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.
Mon 11/36:45 amBLL - STL
3 stops21h 55mAir Canada
Fri 11/78:00 amSTL - BLL
3 stops19h 00mAir Canada
Deal found 10/18$3,520

Cheap 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 October 20, 2025.

Round-trip from

$510
(Flysmarter)

Popular in

July

Cheapest in

March

Average price

$659
From Billund to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 20, 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

Thu 3/5

10:35 am-3:29 pm

2 stops35h 54m

Lambert-St Louis

Mon 3/9

4:05 pm-9:45 am

2 stops35h 40m

$533

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Mon 11/3

6:45 am-9:54 pm

2 stops22h 09m

Lambert-St Louis

Fri 11/7

3:14 pm-1:20 pm

2 stops15h 06m

$541

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 2/4

10:20 am-10:52 am

2 stops31h 32m

Lambert-St Louis

Mon 2/16

7:41 am-9:40 am

2 stops18h 59m

$542

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 2/4

10:20 am-10:58 pm

2 stops19h 38m

Lambert-St Louis

Tue 2/17

6:30 am-1:40 pm

2 stops24h 10m

$542

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 2/4

10:20 am-12:29 pm

2 stops33h 09m

Lambert-St Louis

Sun 2/15

6:45 pm-9:40 am

2 stops31h 55m

$542

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Fri 2/6

10:25 am-11:59 pm

2 stops20h 34m

Lambert-St Louis

Tue 2/17

11:39 am-1:40 pm

2 stops19h 01m

$543

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 2/5

6:30 am-11:59 pm

2 stops24h 29m

Lambert-St Louis

Tue 2/17

11:39 am-1:40 pm

2 stops19h 01m

$543

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 2/5

6:30 am-10:00 pm

2 stops22h 30m

Lambert-St Louis

Mon 2/16

11:25 am-9:40 am

2 stops15h 15m

$543

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 2/5

6:30 am-10:00 pm

2 stops22h 30m

Lambert-St Louis

Wed 2/18

8:30 am-10:00 am

2 stops18h 30m

$543

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 2/5

6:30 am-10:00 pm

2 stops22h 30m

Lambert-St Louis

Sun 2/15

6:45 pm-9:40 am

2 stops31h 55m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/18

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 December is currently the most expensive (average of $737). 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 $541, Air Canada can have you in St. Louis from Billund in 22h 09m. Airlines will cover a distance of 4391 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 December is currently the most expensive (average of $737). 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
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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