Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Billund to St. Louis from $650

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 10/7. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Billund to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 1:25 pm
BLL
-
STL
14h 25m
1 stop
United Airlines Logo
9:04 am - 10:10 am
STL
-
BLL
18h 06m
2 stops
$650United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 1:25 pm
BLL
-
STL
14h 25m
1 stop
United Airlines Logo
3:30 pm - 10:10 am
STL
-
BLL
11h 40m
1 stop
$651United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 1:25 pm
BLL
-
STL
14h 25m
1 stop
United Airlines Logo
9:04 am - 10:10 am
STL
-
BLL
18h 06m
2 stops
$652United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 1:25 pm
BLL
-
STL
14h 25m
1 stop
United Airlines Logo
6:00 am - 2:10 pm
STL
-
BLL
25h 10m
2 stops
$653United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 6:41 pm
BLL
-
STL
19h 41m
2 stops
United Airlines Logo
11:35 am - 10:10 am
STL
-
BLL
15h 35m
2 stops
$654United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 6:41 pm
BLL
-
STL
19h 41m
2 stops
United Airlines Logo
11:35 am - 10:10 am
STL
-
BLL
15h 35m
2 stops
$655United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 6:41 pm
BLL
-
STL
19h 41m
2 stops
United Airlines Logo
11:35 am - 10:10 am
STL
-
BLL
15h 35m
2 stops
$656United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 6:41 pm
BLL
-
STL
19h 41m
2 stops
United Airlines Logo
3:30 pm - 6:00 pm
STL
-
BLL
19h 30m
1 stop
$657United Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
6:00 am - 1:25 pm
BLL
-
STL
14h 25m
1 stop
United Airlines Logo
3:30 pm - 10:10 am
STL
-
BLL
11h 40m
1 stop
$695United Airlines
Wed, Oct 7 - Sun, Oct 11
Multiple Airlines Logo
6:55 pm - 3:46 pm
BLL
-
STL
27h 51m
2 stops
Multiple Airlines Logo
8:55 am - 9:50 am
STL
-
BLL
17h 55m
2 stops
$908Multiple Airlines
Mon, Jul 20 - Fri, Jul 24

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Billund to St. Louis

Our best United Airlines deals on Billund to St. Louis flight tickets
United Airlines
Oct 7
BLL6:00 amBillund
14h 25m
1 stop
STL1:25 pmLambert-St Louis
Oct 11
STL9:04 amLambert-St Louis
18h 06m
2 stops
BLL10:10 amBillund
$650
United Airlines
Oct 7
BLL6:00 amBillund
14h 25m
1 stop
STL1:25 pmLambert-St Louis
Oct 11
STL3:30 pmLambert-St Louis
11h 40m
1 stop
BLL10:10 amBillund
$651
United Airlines
Oct 7
BLL6:00 amBillund
14h 25m
1 stop
STL1:25 pmLambert-St Louis
Oct 11
STL9:04 amLambert-St Louis
18h 06m
2 stops
BLL10:10 amBillund
$652

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 July 4, 2026.
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

Cheapest round-trip

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Sun 10/11

9:04 am-10:10 am

2 stops18h 06m

$650
Quickest round-trip

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Sun 10/11

3:30 pm-10:10 am

1 stop11h 40m

$651

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Sun 10/11

9:04 am-10:10 am

2 stops18h 06m

$652

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Sun 10/11

6:00 am-2:10 pm

2 stops25h 10m

$653

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-6:41 pm

2 stops19h 41m

Lambert-St Louis

Sun 10/11

11:35 am-10:10 am

2 stops15h 35m

$654

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-6:41 pm

2 stops19h 41m

Lambert-St Louis

Sun 10/11

11:35 am-10:10 am

2 stops15h 35m

$655

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-6:41 pm

2 stops19h 41m

Lambert-St Louis

Sun 10/11

11:35 am-10:10 am

2 stops15h 35m

$656

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-6:41 pm

2 stops19h 41m

Lambert-St Louis

Sun 10/11

3:30 pm-6:00 pm

1 stop19h 30m

$657

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Wed 10/7

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Sun 10/11

3:30 pm-10:10 am

1 stop11h 40m

$695

BillundSt. Louis

BLL - STL

BLLSTL

Billund

Mon 7/20

6:55 pm-3:46 pm

2 stops27h 51m

Lambert-St Louis

Fri 7/24

8:55 am-9:50 am

2 stops17h 55m

$908

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 typical price of a round-trip flight between Billund and St. Louis?

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

In general, May 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 $0. The month of August is another great option to travel to St. Louis, with average flight prices from Billund averaging around $600.

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

19h 41m

Direct flights

None
The fastest flight from Billund to St. Louis takes 19h 41m
There are no direct flights from Billund to St. Louis. There are no popular flight routes from Billund to St. Louis.
Search flight deals

Frequently asked questions about flying 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 19h 41m.

  • 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
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Fenton
Farmington
Wentzville
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/3
Mon 8/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States