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St. Louis

$509+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BLL — STL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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 September 16, 2025.

Round-trip from

$509
(British Airways)

Popular in

July

Cheapest in

March

Average price

$685
From Billund to Lambert-St Louis
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Highest demand for flights based on searches. 19% potential increase in price ($172 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 16, 2025.

This British Airways deal was found by Cheapflights users on 9/14. 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 12/41:00 pmBLL - STL
2 stops31h 29mBritish Airways
Mon 12/87:36 pmSTL - BLL
2 stops33h 54mBritish Airways
Deal found 9/14$509
This oojo deal was found by Cheapflights users on 9/15. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1010:45 amBLL - STL
2 stops20h 12mLufthansa
Mon 10/205:28 pmSTL - BLL
2 stops35h 57mLufthansa
Deal found 9/15$659
This Air Canada deal was found by Cheapflights users on 9/14. 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 9/186:00 amBLL - STL
2 stops20h 57mAir Canada
Mon 9/291:30 pmSTL - BLL
2 stops17h 30mAir Canada
Deal found 9/14$740
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:00 amBLL - STL
2 stops17h 05mDelta
Mon 9/295:11 pmSTL - BLL
2 stops16h 14mDelta
Deal found 9/15$753
This Gurufare deal was found by Cheapflights users on 9/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:40 pmBLL - STL
1 stop29h 50mLufthansa
Mon 9/2912:25 pmSTL - BLL
2 stops17h 00mLufthansa
Deal found 9/15$886
This Gurufare deal was found by Cheapflights users on 9/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/121:05 pmBLL - STL
2 stops33h 39mLufthansa
Sat 10/185:28 pmSTL - BLL
2 stops33h 37mLufthansa
Deal found 9/14$1,067
This Ovago deal was found by Cheapflights users on 9/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:55 pmBLL - STL
2 stops39h 52mLufthansa
Sun 10/193:30 pmSTL - BLL
1 stop11h 35mLufthansa
Deal found 9/14$1,120

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 September 16, 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 12/4

8:40 pm-7:06 pm

2 stops29h 26m

Lambert-St Louis

Mon 12/8

7:36 pm-12:30 pm

2 stops33h 54m

$509

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Fri 10/10

10:45 am-11:57 pm

2 stops20h 12m

Lambert-St Louis

Mon 10/20

5:28 pm-12:25 pm

2 stops35h 57m

$659

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sun 10/12

1:05 pm-3:44 pm

2 stops33h 39m

Lambert-St Louis

Sat 10/18

5:28 pm-10:05 am

2 stops33h 37m

$1,067

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Fri 10/10

2:55 pm-11:47 pm

2 stops39h 52m

Lambert-St Louis

Sun 10/19

3:30 pm-10:05 am

1 stop11h 35m

$1,120

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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, August is the cheapest month in which you can book a flight from Billund to St. Louis (average of $311). Flying from Billund to St. Louis in March is currently the most expensive (average of $356). 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 $659, British Airways can have you in St. Louis from Billund in 20h 12m. 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, August is the cheapest month in which you can book a flight from Billund to St. Louis (average of $311). Flying from Billund to St. Louis in March is currently the most expensive (average of $356). 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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