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$486+ 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
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheapflights Tip: The best prices from Billund to Lambert-St Louis are usually found in March or February, booked 60 days in advance, depart on a Monday or Tuesday and return on a Tuesday

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 July 1, 2025.

Round-trip from

$486
(British Airways)

Popular in

June

Cheapest in

March

Average price

$883
From Billund to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($194 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 1, 2025.

This British Airways deal was found by Cheapflights users on 6/29. 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 12/48:40 pmBLL - STL
2 stops28h 35mBritish Airways
Mon 12/811:14 amSTL - BLL
2 stops18h 06mBritish Airways
Deal found 6/29$486
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 12/410:35 amBLL - STL
2 stops35h 54mUnited Airlines
Mon 12/83:15 pmSTL - BLL
2 stops15h 05mUnited Airlines
Deal found 6/30$524
This Travelis deal was found by Cheapflights users on 7/1. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:00 amBLL - STL
2 stops17h 42mAir France
Wed 8/1311:28 amSTL - BLL
2 stops16h 37mAir France
Deal found 7/1$659
This Flightnetwork deal was found by Cheapflights users on 7/1. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/610:50 amBLL - STL
2 stops16h 10mMultiple Airlines
Wed 8/133:30 pmSTL - BLL
1 stop11h 40mMultiple Airlines
Deal found 7/1$870
This Ticket deal was found by Cheapflights users on 7/1. 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.
Wed 8/66:00 amBLL - STL
1 stop14h 30mLufthansa
Wed 8/133:30 pmSTL - BLL
1 stop11h 40mLufthansa
Deal found 7/1$1,220

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 July 1, 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-6:15 pm

2 stops28h 35m

Lambert-St Louis

Mon 12/8

11:14 am-12:20 pm

2 stops18h 06m

$486

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 12/4

10:35 am-3:29 pm

2 stops35h 54m

Lambert-St Louis

Mon 12/8

3:15 pm-1:20 pm

2 stops15h 05m

$524

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 8/6

6:00 am-4:42 pm

2 stops17h 42m

Lambert-St Louis

Wed 8/13

11:28 am-11:05 am

2 stops16h 37m

$659

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 8/6

10:50 am-8:00 pm

2 stops16h 10m

Lambert-St Louis

Wed 8/13

3:30 pm-10:10 am

1 stop11h 40m

$870

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 8/6

6:00 am-1:30 pm

1 stop14h 30m

Lambert-St Louis

Wed 8/13

3:30 pm-10:10 am

1 stop11h 40m

$1,220

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sun 9/14

7:10 pm-9:06 am

3 stops44h 56m

$549

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sun 9/14

8:55 pm-6:23 pm

2 stops28h 28m

$673

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Sun 9/14

6:00 am-1:30 pm

1 stop14h 30m

$867

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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

How far ahead should I book a flight from Billund to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Billund to St. Louis. Price data was last updated on June 27, 2025.

The best time to book flights from Billund to St. Louis is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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.

How much does it cost to fly round-trip from Billund to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated July 1, 2025.
Read reviews from past customers who have flown Finnair, Air France, and United Airlines from Billund to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,301 reviews
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Air France
7.5
Good
1,472 reviews
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
8,858 reviews
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Lufthansa
6.8
Okay
7,204 reviews
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.6
Okay
7,086 reviews
Finnair
7.6
Good
1,301 reviews

Crew

8.1

Food

6.7

Boarding

7.6

Comfort

7.4

Entertainment

6.8

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

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.

  • What are the cheapest airlines flying from Billund to St. Louis round-trip?

    Flying on British Airways is currently your cheapest option to St. Louis, with prices starting at $486. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air France, with the lowest prices starting at $524 and $659, respectively. British Airways is currently priced 30% below the average price you’ll pay for this route.

  • 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 Billund?

Book flights to Billund if you plan to visit one of these locations
O'Fallon
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Collinsville
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