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Cheap flights from Denmark to St. Louis from $452

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denmark to St. Louis departing on 12/9. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denmark to St. Louis

Recent round-trip flight deals from Denmark to St. Louis

Enter your travel dates to find the best prices.
Lufthansa Logo
6:40 am - 1:25 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
3:30 pm - 11:35 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
13h 05m1 stop Frankfurt am Main
$651Lufthansa
Mon, Aug 31 - Mon, Sep 7
Lufthansa Logo
7:15 am - 1:45 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 30m1 stop Frankfurt am Main
Lufthansa Logo
3:40 pm - 12:00 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
13h 20m1 stop Frankfurt am Main
$652Lufthansa
Wed, Nov 18 - Sun, Nov 22
Lufthansa Logo
6:40 am - 1:25 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
6:53 pm - 4:35 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
14h 42m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
$653Lufthansa
Mon, Aug 31 - Mon, Sep 7
Lufthansa Logo
7:15 am - 1:45 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 30m1 stop Frankfurt am Main
Lufthansa Logo
6:50 pm - 5:35 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
15h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
$656Lufthansa
Wed, Nov 18 - Sun, Nov 22
Air Canada Logo
11:35 am - 10:24 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
17h 49m2 stops Toronto Pearson Intl Chicago O'Hare Intl
Air Canada Logo
4:05 pm - 10:20 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
11h 15m1 stop Toronto Pearson Intl
$665Air Canada
Wed, Nov 18 - Sat, Nov 21
Multiple Airlines Logo
7:15 am - 1:45 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 30m1 stop Frankfurt am Main
Multiple Airlines Logo
4:05 pm - 10:20 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
11h 15m1 stop Toronto Pearson Intl
$666Multiple Airlines
Wed, Nov 18 - Sat, Nov 21
Multiple Airlines Logo
10:05 am - 3:26 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
36h 21m2 stops Frankfurt am Main Toronto Pearson Intl
Multiple Airlines Logo
4:05 pm - 10:20 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
11h 15m1 stop Toronto Pearson Intl
$669Multiple Airlines
Tue, Nov 17 - Sat, Nov 21
United Airlines Logo
6:00 am - 1:25 pmBLL  Billund-STL Lambert-St Louis
14h 25m1 stop Frankfurt am Main
United Airlines Logo
9:30 am - 10:05 amSTL  Lambert-St Louis-BLL Billund
17h 35m2 stops Chicago O'Hare Intl Frankfurt am Main
$675United Airlines
Fri, Sep 4 - Mon, Sep 7
United Airlines Logo
2:45 pm - 2:17 pmBLL  Billund-STL Lambert-St Louis
30h 32m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
1:29 pm - 10:05 amSTL  Lambert-St Louis-BLL Billund
13h 36m2 stops Chicago O'Hare Intl Frankfurt am Main
$680United Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
2:45 pm - 10:59 pmBLL  Billund-STL Lambert-St Louis
15h 14m2 stops Frankfurt am Main Chicago O'Hare Intl
United Airlines Logo
12:59 pm - 10:05 amSTL  Lambert-St Louis-BLL Billund
14h 06m2 stops Chicago O'Hare Intl Frankfurt am Main
$681United Airlines
Fri, Sep 4 - Mon, Sep 7

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United Airlines flights from Denmark to St. Louis

Our best United Airlines deals on Denmark to St. Louis flight tickets
United Airlines
Sep 4
BLL6:00 amBillund
14h 25m
1 stop
STL1:25 pmLambert-St Louis
Sep 7
STL9:30 amLambert-St Louis
17h 35m
2 stops
BLL10:05 amBillund
$675
United Airlines
Oct 1
BLL2:45 pmBillund
30h 32m
2 stops
STL2:17 pmLambert-St Louis
Oct 5
STL1:29 pmLambert-St Louis
13h 36m
2 stops
BLL10:05 amBillund
$680
United Airlines
Sep 4
BLL2:45 pmBillund
15h 14m
2 stops
STL10:59 pmLambert-St Louis
Sep 7
STL12:59 pmLambert-St Louis
14h 06m
2 stops
BLL10:05 amBillund
$681

Lufthansa flights from Denmark to St. Louis

Our best Lufthansa deals on Denmark to St. Louis flight tickets
Lufthansa
Aug 31
CPH6:40 amKastrup Copenhagen
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 7
STL3:30 pmLambert-St Louis
13h 05m
1 stop
CPH11:35 amKastrup Copenhagen
$651
Lufthansa
Nov 18
CPH7:15 amKastrup Copenhagen
13h 30m
1 stop
STL1:45 pmLambert-St Louis
Nov 22
STL3:40 pmLambert-St Louis
13h 20m
1 stop
CPH12:00 pmKastrup Copenhagen
$652
Lufthansa
Aug 31
CPH6:40 amKastrup Copenhagen
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 7
STL6:53 pmLambert-St Louis
14h 42m
2 stops
CPH4:35 pmKastrup Copenhagen
$653

momondo Fare Finder

 
Customize your flight search to find flights from Denmark 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 August 14, 2026.
Use the filters below to find and compare flights from Denmark to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Mon 8/31

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/7

3:30 pm-11:35 am

1 stop13h 05m

$651

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Wed 11/18

7:15 am-1:45 pm

1 stop13h 30m

Lambert-St Louis

Sun 11/22

3:40 pm-12:00 pm

1 stop13h 20m

$652

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Mon 8/31

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/7

6:53 pm-4:35 pm

2 stops14h 42m

$653

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Wed 11/18

7:15 am-1:45 pm

1 stop13h 30m

Lambert-St Louis

Sun 11/22

6:50 pm-5:35 pm

2 stops15h 45m

$656

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Wed 11/18

11:35 am-10:24 pm

2 stops17h 49m

Lambert-St Louis

Sat 11/21

4:05 pm-10:20 am

1 stop11h 15m

$665
Quickest round-trip

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Wed 11/18

7:15 am-1:45 pm

1 stop13h 30m

Lambert-St Louis

Sat 11/21

4:05 pm-10:20 am

1 stop11h 15m

$666

CopenhagenSt. Louis

CPH Kastrup Copenhagen - STL Lambert-St Louis

CPHSTL

Kastrup Copenhagen

Tue 11/17

10:05 am-3:26 pm

2 stops36h 21m

Lambert-St Louis

Sat 11/21

4:05 pm-10:20 am

1 stop11h 15m

$669

BillundSt. Louis

BLL Billund - STL Lambert-St Louis

BLLSTL

Billund

Fri 9/4

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Mon 9/7

9:30 am-10:05 am

2 stops17h 35m

$675

BillundSt. Louis

BLL Billund - STL Lambert-St Louis

BLLSTL

Billund

Thu 10/1

2:45 pm-2:17 pm

2 stops30h 32m

Lambert-St Louis

Mon 10/5

1:29 pm-10:05 am

2 stops13h 36m

$680

BillundSt. Louis

BLL Billund - STL Lambert-St Louis

BLLSTL

Billund

Fri 9/4

2:45 pm-10:59 pm

2 stops15h 14m

Lambert-St Louis

Mon 9/7

12:59 pm-10:05 am

2 stops14h 06m

$681

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Denmark 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, December is the cheapest month to fly from Denmark to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $627. The month of March is another great option to travel to St. Louis, with average flight prices from Denmark averaging around $640.

How far in advance should I book a flight from Denmark to St. Louis?

You are more likely to see cheaper flights to St. Louis from Denmark when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $692 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Denmark for as low as $619 on momondo.

Can stopping save me money on Denmark to St. Louis flights?

You could potentially save up to 14% on your flight if you consider stops on a Denmark to St. Louis flight.

Cheap Denmark to St. Louis flight deals and tips

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

Fastest flight time

13h 45m

Direct flights

None
The fastest flight from Denmark to St. Louis takes 13h 45m
There are no direct flights from Denmark to St. Louis. There are no popular flight routes from Denmark to St. Louis.
Search flight deals

Frequently asked questions about flying from Denmark to St. Louis

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

    Prices for flights from Denmark to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Denmark to Lambert-St Louis Airport?

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denmark 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.

Best airlines flying from Denmark to St. Louis

Compare and see reviews for airlines that fly from Denmark to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $542Free CancellationRating
7.4
10,108 reviews
Search United Airlines flights
LufthansaPriceFrom $594Free CancellationRating
6.8
8,191 reviews
Search Lufthansa flights

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

Why use momondo?

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

Finding the right flight to St. Louis from Denmark is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Denmark to St. Louis flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Denmark and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to St. Louis from Denmark are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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