What is the cheapest airline that flies from Lambert-St Louis to Denmark?

British Airways and United Airlines are the most popular carriers operating from Lambert-St Louis to Denmark

What airlines fly to Denmark?

Air Canada, United Airlines and Delta are the top three most popular airlines that fly to Denmark from St. Louis according to our data. Air Canada is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Denmark. Keep in mind that there are 5 different airlines that fly to Denmark on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Lambert-St Louis Airport to Denmark were last updated today.

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

As of October 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Denmark.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Denmark.

What documentation or ID do you need to fly to Denmark?

The necessary travel and health documents for your Denmark trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$336 Cheap Flights from St. Louis to Denmark in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Denmark

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 1:30 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

14h 50m1 stop Frankfurt am Main

11:35 am - 2:28 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

33h 53m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$737United Airlines

Wed, Feb 3 - Fri, Feb 5

3:40 pm - 1:30 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

14h 50m1 stop Frankfurt am Main

11:35 am - 4:19 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

35h 44m2 stops Toronto Pearson Intl Newark

$737United Airlines

Wed, Feb 3 - Fri, Feb 5

4:05 pm - 2:10 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

15h 05m2 stops Toronto Pearson Intl Zurich

11:35 am - 7:24 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

38h 49m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$743Air Canada

Wed, Feb 10 - Fri, Feb 12

4:05 pm - 2:10 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

15h 05m2 stops Toronto Pearson Intl Zurich

11:35 am - 2:28 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

33h 53m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$743Air Canada

Wed, Feb 3 - Fri, Feb 5

6:45 pm - 12:00 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

34h 15m2 stops Chicago O'Hare Intl Frankfurt am Main

7:15 am - 1:45 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

13h 30m1 stop Frankfurt am Main

$770Lufthansa

Tue, Feb 9 - Fri, Feb 12

6:00 am - 6:45 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

17h 45m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

9:00 am - 11:39 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

21h 39m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$793Delta

Sun, Apr 18 - Wed, Apr 28

9:40 pm - 3:55 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

11h 15m1 stop London Heathrow

8:15 pm - 7:30 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

30h 15m1 stop London Heathrow

$794British Airways

Sun, Apr 18 - Wed, Apr 28

3:30 pm - 11:40 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

13h 10m1 stop Frankfurt am Main

6:15 am - 1:25 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

14h 10m1 stop Frankfurt am Main

$795Lufthansa

Sun, Apr 18 - Wed, Apr 28

1:45 pm - 2:20 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

17h 35m2 stops Chicago O'Hare Intl London Heathrow

8:55 am - 8:16 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

18h 21m2 stops Helsinki-Vantaa Dallas/Fort Worth

$797Multiple Airlines

Sun, Feb 7 - Sun, Feb 14

10:00 am - 9:10 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

16h 10m2 stops New York LaGuardia Paris Charles de Gaulle

12:05 pm - 8:37 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

15h 32m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$799Delta

Mon, Feb 8 - Wed, Feb 17

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United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets

United Airlines

Feb 3

STL3:40 pmLambert-St Louis

14h 50m

1 stop

CPH1:30 pmKastrup Copenhagen

Feb 5

CPH11:35 amKastrup Copenhagen

35h 44m

2 stops

STL4:19 pmLambert-St Louis

$737

United Airlines

Feb 3

STL3:40 pmLambert-St Louis

14h 50m

1 stop

CPH1:30 pmKastrup Copenhagen

Feb 5

CPH11:35 amKastrup Copenhagen

35h 44m

2 stops

STL4:19 pmLambert-St Louis

$738

United Airlines

Apr 18

STL3:30 pmLambert-St Louis

15h 25m

1 stop

CPH1:55 pmKastrup Copenhagen

Apr 28

CPH12:45 pmKastrup Copenhagen

33h 53m

2 stops

STL3:38 pmLambert-St Louis

$787

Delta flights from St. Louis to Denmark

Our best Delta deals on St. Louis to Denmark flight tickets

Delta

Apr 18

STL6:00 amLambert-St Louis

17h 45m

2 stops

CPH6:45 amKastrup Copenhagen

Apr 28

CPH9:00 amKastrup Copenhagen

21h 39m

2 stops

STL11:39 pmLambert-St Louis

$793

Delta

Dec 13

STL5:20 pmLambert-St Louis

16h 00m

2 stops

CPH4:20 pmKastrup Copenhagen

Dec 29

CPH6:00 amKastrup Copenhagen

18h 26m

2 stops

STL5:26 pmLambert-St Louis

$950

Delta

Dec 13

STL5:20 pmLambert-St Louis

16h 00m

2 stops

CPH4:20 pmKastrup Copenhagen

Dec 28

CPH6:00 amKastrup Copenhagen

21h 43m

2 stops

STL8:43 pmLambert-St Louis

$1,010

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Wed 2/3

3:40 pm-1:30 pm

1 stop14h 50m

Kastrup Copenhagen

Fri 2/5

11:35 am-2:28 pm

2 stops33h 53m

$737

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Wed 2/3

3:40 pm-1:30 pm

1 stop14h 50m

Kastrup Copenhagen

Fri 2/5

11:35 am-4:19 pm

2 stops35h 44m

$737

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Wed 2/10

4:05 pm-2:10 pm

2 stops15h 05m

Kastrup Copenhagen

Fri 2/12

11:35 am-7:24 pm

2 stops38h 49m

$743

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Wed 2/3

4:05 pm-2:10 pm

2 stops15h 05m

Kastrup Copenhagen

Fri 2/5

11:35 am-2:28 pm

2 stops33h 53m

$743

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Tue 2/9

6:45 pm-12:00 pm

2 stops34h 15m

Kastrup Copenhagen

Fri 2/12

7:15 am-1:45 pm

1 stop13h 30m

$770

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 4/18

6:00 am-6:45 am

2 stops17h 45m

Kastrup Copenhagen

Wed 4/28

9:00 am-11:39 pm

2 stops21h 39m

$793

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 4/18

9:40 pm-3:55 pm

1 stop11h 15m

Kastrup Copenhagen

Wed 4/28

8:15 pm-7:30 pm

1 stop30h 15m

$794

Quickest round-trip

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 4/18

3:30 pm-11:40 am

1 stop13h 10m

Kastrup Copenhagen

Wed 4/28

6:15 am-1:25 pm

1 stop14h 10m

$795

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 2/7

1:45 pm-2:20 pm

2 stops17h 35m

Kastrup Copenhagen

Sun 2/14

8:55 am-8:16 pm

2 stops18h 21m

$797

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 2/8

10:00 am-9:10 am

2 stops16h 10m

Kastrup Copenhagen

Wed 2/17

12:05 pm-8:37 pm

2 stops15h 32m

$799

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Denmark?

In general, October is the cheapest month to fly from St. Louis to Denmark. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $512. If you aren’t able to travel to Denmark during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $523.

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

You could potentially save up to 32% on your flight if you consider stops on a St. Louis to Denmark flight.

Cheap St. Louis to Denmark flight deals and tips

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

Best Price Found	$336
Fastest flight time	14h 50m
Direct flights	None

The best one-way flight to Denmark from St. Louis in the past 72 hours is $336. The best round-trip flight deal from St. Louis to Denmark found on momondo in the last 72 hours is $737.

The fastest flight from St. Louis to Denmark takes 14h 50m

There are no direct flights from St. Louis to Denmark. There are no popular flight routes from St. Louis to Denmark.

Search flight deals

Frequently asked questions about flying from St. Louis to Denmark

When did momondo last update prices for flights from Lambert-St Louis Airport to Denmark?
Prices for flights from Lambert-St Louis Airport to Denmark were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Denmark?
As of October 2026, there are 5 operators available to choose from for flights from Lambert-St Louis Airport to Denmark.
How old do you have to be to fly from Lambert-St Louis Airport to Denmark?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Denmark.
What documentation or ID do you need to fly to Denmark?
The necessary travel and health documents for your Denmark trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Denmark

Compare and see reviews for airlines that fly from St. Louis to Denmark with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $406	Free Cancellation	Rating 7.8 8,650 reviews	Search Delta flights
Lufthansa	PriceFrom $601	Free Cancellation	Rating 6.8 8,279 reviews	Search Lufthansa flights
United Airlines	PriceFrom $650	Free Cancellation	Rating 7.3 10,388 reviews	Search United Airlines flights
Scandinavian Airlines	PriceFrom $756	Free Cancellation	Rating 7.4 2,019 reviews	Search Scandinavian Airlines flights
Air Canada	PriceFrom $761	Free Cancellation	Rating 7.1 11,785 reviews	Search Air Canada flights

Why use momondo?

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

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 St. Louis to Denmark for you.

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

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

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

Once you have performed a search for St. Louis to Denmark flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Denmark from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Popular cities in Denmark

Flights to Copenhagenfrom $446

Flights to Billundfrom $598

Flights to Aalborgfrom $588

Flights to Aarhusfrom $591

Flights to Sønderborgfrom $841

Flights to Karupfrom $1,271

Cheap flights from St. Louis to Denmark from $336

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Denmark departing on 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets

Delta flights from St. Louis to Denmark

Our best Delta deals on St. Louis to Denmark flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Denmark that are best for you.

See travel insights to Denmark from

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

What is the cheapest month to fly to Denmark?

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

What is the cheapest airline that flies from Lambert-St Louis to Denmark?

What airlines fly to Denmark?

Cheap St. Louis to Denmark flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Denmark

Best airlines flying from St. Louis to Denmark

Compare and see reviews for airlines that fly from St. Louis to Denmark with momondo

Why use momondo?

An easier way to manage your Denmark 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Denmark

Popular cities in Denmark

Popular flights according to clicks in the last 7 days on momondo

St. Louis flight routes

According to popular flight searches on momondo this year

Denmark flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Denmark

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denmark

List of cabin classes available on flights landing in Denmark. Availability may vary depending on flight origin and airline.

Complete your trip to Denmark

Explore popular destinations other users love

According to popular flight searches on momondo this year