Cheap flights from Billund to St. Louis from $512

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Billund to St. Louis departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
1:00 pm - 9:15 pm
BLL
-
STL
39h 15m2 stops
British Airways Logo
1:35 pm - 12:30 pm
STL
-
BLL
39h 55m2 stops
$512British Airways
Thu, Jan 22 - Mon, Jan 26
British Airways Logo
1:00 pm - 1:03 pm
BLL
-
STL
31h 03m2 stops
British Airways Logo
1:35 pm - 12:20 pm
STL
-
BLL
15h 45m2 stops
$551British Airways
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
6:35 am - 9:13 pm
BLL
-
STL
21h 38m2 stops
United Airlines Logo
9:55 am - 1:25 pm
STL
-
BLL
20h 30m2 stops
$566United Airlines
Wed, Feb 11 - Wed, Feb 18

British Airways flights from Billund to St. Louis

Our best British Airways deals on Billund to St. Louis flight tickets
British Airways
Jan 22
BLL1:00 pmBillund
39h 15m
2 stops
STL9:15 pmLambert-St Louis
Jan 26
STL1:35 pmLambert-St Louis
39h 55m
2 stops
BLL12:30 pmBillund
British Airways
Jan 22
BLL1:00 pmBillund
31h 03m
2 stops
STL1:03 pmLambert-St Louis
Jan 26
STL6:00 amLambert-St Louis
23h 20m
2 stops
BLL12:20 pmBillund

momondo 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, momondo users made 832,500 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Billund to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 1/22

1:00 pm-9:15 pm

2 stops39h 15m

Lambert-St Louis

Mon 1/26

1:35 pm-12:30 pm

2 stops39h 55m

$512

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Thu 1/22

1:00 pm-1:03 pm

2 stops31h 03m

Lambert-St Louis

Mon 1/26

1:35 pm-12:20 pm

2 stops15h 45m

$551

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 2/11

6:35 am-9:13 pm

2 stops21h 38m

Lambert-St Louis

Wed 2/18

9:55 am-1:25 pm

2 stops20h 30m

$566

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Billund to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, March is the cheapest month to fly from Billund to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $398. The month of August is another great option to travel to St. Louis, with average flight prices from Billund averaging around $564.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $844. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,155. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

When to book flights from Billund to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Billund to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Billund to St. Louis (BLL to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Billund to St. Louis

Fastest flight time

31h 03m

Direct flights

None
The fastest flight from Billund to St. Louis takes 31h 03m
There are no direct flights from Billund to St. Louis. There are no popular flight routes from Billund to St. Louis.
  • How far is Billund to Lambert-St Louis by plane?

    Lambert-St Louis is 4391.1 mi away from Billund. A reasonable flight in good conditions will take 31h 03m.

  • When did momondo last update prices for flights from Billund Airport to Lambert-St Louis Airport?

    Prices for flights from Billund Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Billund Airport to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billund Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Glencoe
Eureka
Festus
Edwardsville
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Billund to St. Louis?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Billund to St. Louis for you.

Can I find flights from Billund to St. Louis with flexible booking policies on momondo?

All flight searches from Billund to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Billund to St. Louis?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Billund.

I’m not ready to book a flight from Billund to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Billund to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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1 adult
Tue 1/27
Tue 2/3

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