Which airport is the most popular layover for flights between St. Louis and Copenhagen?

Toronto (YYZ) was the most common stop: 63% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from St. Louis to Copenhagen?

Philadelphia (PHL) has the shortest average layover time for this route: 2h 33m.

Which layover airport offers the lowest fares from St. Louis to Copenhagen?

Flights via London (LHR) offer the lowest average round-trip price of $655.

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

British Airways is the most popular carrier operating from Lambert-St Louis to Kastrup Copenhagen

What airlines fly to Copenhagen?

Air Canada, United Airlines and Lufthansa are the top three most popular airlines that fly to Copenhagen from St. Louis according to our data. Air Canada is the first choice among our users, with 28% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 6 different airlines that fly to Copenhagen on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from St. Louis to Copenhagen?

Flights connecting via Philadelphia (PHL) have the shortest average one-way travel time: 10h 55m.

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

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

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

As of September 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport.

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

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 Kastrup Copenhagen Airport.

What documentation or ID do you need to fly to Kastrup Copenhagen Airport?

The travel and health documents required for your trip to Kastrup Copenhagen 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 Kastrup Copenhagen Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$354 Cheap Flights from St. Louis to Copenhagen in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Copenhagen

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:27 am - 10:50 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

17h 23m2 stops Chicago O'Hare Intl Toronto Pearson Intl

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

18h 49m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$594Air Canada

Mon, Oct 19 - Wed, Nov 4

2:40 pm - 10:50 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

13h 10m1 stop Toronto Pearson Intl

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

18h 49m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$596Air Canada

Mon, Oct 19 - Wed, Nov 4

6:50 pm - 10:20 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

32h 30m2 stops Chicago O'Hare Intl Toronto Pearson Intl

11:35 am - 12:10 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

31h 35m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$666United Airlines

Mon, Nov 9 - Wed, Nov 18

2:40 pm - 10:50 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

13h 10m1 stop Toronto Pearson Intl

1:10 pm - 9:40 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

15h 30m2 stops Munich Franz Josef Strauss Chicago O'Hare Intl

$676Multiple Airlines

Mon, Oct 19 - Wed, Nov 4

6:50 pm - 10:20 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

32h 30m2 stops Chicago O'Hare Intl Toronto Pearson Intl

11:35 am - 3:26 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

34h 51m1 stop Toronto Pearson Intl

$679United Airlines

Mon, Nov 9 - Wed, Nov 18

1:06 pm - 2:20 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

19h 14m2 stops Chicago O'Hare Intl London Heathrow

10:30 am - 11:59 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

20h 29m2 stops London Heathrow Chicago O'Hare Intl

$691American Airlines

Tue, Oct 27 - Tue, Nov 3

4:05 pm - 9:05 amSTL Lambert-St Louis-CPH Kastrup Copenhagen

11h 00m1 stop Toronto Pearson Intl

6:45 am - 3:26 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

39h 41m2 stops Zurich Toronto Pearson Intl

$695Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

6:50 pm - 5:35 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

15h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

7:10 pm - 1:45 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

25h 35m1 stop Frankfurt am Main

$755Lufthansa

Sun, Nov 8 - Sat, Nov 14

6:50 pm - 5:35 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

15h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

12:40 pm - 1:45 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

32h 05m1 stop Frankfurt am Main

$756Lufthansa

Sun, Nov 8 - Sat, Nov 14

4:32 pm - 5:20 pmSTL Lambert-St Louis-CPH Kastrup Copenhagen

17h 48m2 stops Chicago O'Hare Intl London Heathrow

8:55 am - 8:19 pmCPH Kastrup Copenhagen-STL Lambert-St Louis

18h 24m2 stops Helsinki-Vantaa Dallas/Fort Worth

$800American Airlines

Thu, Dec 31 - Thu, Jan 7

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United Airlines flights from St. Louis to Copenhagen

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

United Airlines

Nov 9

STL6:50 pmLambert-St Louis

32h 30m

2 stops

CPH10:20 amKastrup Copenhagen

Nov 18

CPH11:35 amKastrup Copenhagen

31h 35m

2 stops

STL12:10 pmLambert-St Louis

$666

United Airlines

Nov 9

STL6:50 pmLambert-St Louis

32h 30m

2 stops

CPH10:20 amKastrup Copenhagen

Nov 18

CPH11:35 amKastrup Copenhagen

34h 51m

1 stop

STL3:26 pmLambert-St Louis

$679

United Airlines

Oct 19

STL8:55 amLambert-St Louis

18h 55m

1 stop

CPH10:50 amKastrup Copenhagen

Nov 4

CPH7:15 amKastrup Copenhagen

13h 30m

1 stop

STL1:45 pmLambert-St Louis

$698

American Airlines flights from St. Louis to Copenhagen

Our best American Airlines deals on St. Louis to Copenhagen flight tickets

American Airlines

Oct 27

STL1:06 pmLambert-St Louis

19h 14m

2 stops

CPH2:20 pmKastrup Copenhagen

Nov 3

CPH10:30 amKastrup Copenhagen

20h 29m

2 stops

STL11:59 pmLambert-St Louis

$691

American Airlines

Dec 31

STL4:32 pmLambert-St Louis

17h 48m

2 stops

CPH5:20 pmKastrup Copenhagen

Jan 7

CPH8:55 amKastrup Copenhagen

18h 24m

2 stops

STL8:19 pmLambert-St Louis

$800

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 10/19

10:27 am-10:50 am

2 stops17h 23m

Kastrup Copenhagen

Wed 11/4

11:35 am-11:24 pm

2 stops18h 49m

$594

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 10/19

2:40 pm-10:50 am

1 stop13h 10m

Kastrup Copenhagen

Wed 11/4

11:35 am-11:24 pm

2 stops18h 49m

$596

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 11/9

6:50 pm-10:20 am

2 stops32h 30m

Kastrup Copenhagen

Wed 11/18

11:35 am-12:10 pm

2 stops31h 35m

$666

Quickest round-trip

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 10/19

2:40 pm-10:50 am

1 stop13h 10m

Kastrup Copenhagen

Wed 11/4

1:10 pm-9:40 pm

2 stops15h 30m

$676

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 11/9

6:50 pm-10:20 am

2 stops32h 30m

Kastrup Copenhagen

Wed 11/18

11:35 am-3:26 pm

1 stop34h 51m

$679

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Tue 10/27

1:06 pm-2:20 pm

2 stops19h 14m

Kastrup Copenhagen

Tue 11/3

10:30 am-11:59 pm

2 stops20h 29m

$691

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Tue 10/27

4:05 pm-9:05 am

1 stop11h 00m

Kastrup Copenhagen

Tue 11/3

6:45 am-3:26 pm

2 stops39h 41m

$695

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 11/8

6:50 pm-5:35 pm

2 stops15h 45m

Kastrup Copenhagen

Sat 11/14

7:10 pm-1:45 pm

1 stop25h 35m

$755

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 11/8

6:50 pm-5:35 pm

2 stops15h 45m

Kastrup Copenhagen

Sat 11/14

12:40 pm-1:45 pm

1 stop32h 05m

$756

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Thu 12/31

4:32 pm-5:20 pm

2 stops17h 48m

Kastrup Copenhagen

Thu 1/7

8:55 am-8:19 pm

2 stops18h 24m

$800

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Layovers

What is the typical price of a round-trip flight between St. Louis and Copenhagen?

Prices are currently low for flights on this route.

Typical prices usually range from $941 to $1,317.
The lowest price recently found on this route was $594.

What is the cheapest month to fly to Copenhagen?

The cheapest month to fly to Copenhagen from St. Louis is in February. Flight prices, which tend to average around $523, are often lower during this time because this is during the off-season. If you aren’t able to travel to Copenhagen during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $680.

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

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

When to book flights from St. Louis to Copenhagen

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

Estimated round-trip price

Cheap St. Louis to Copenhagen (STL to CPH) flight deals and tips

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

Best Price Found	$354
Fastest flight time	11h 15m
Direct flights	None

The best one-way flight to Copenhagen from St. Louis in the past 72 hours is $354. The best round-trip flight deal from St. Louis to Copenhagen found on momondo in the last 72 hours is $594.

The fastest flight from St. Louis to Copenhagen takes 11h 15m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Copenhagen

How far is Lambert-St Louis to Kastrup Copenhagen by plane?
The straight-line distance from Lambert-St Louis to Kastrup Copenhagen is 4507.7 mi. In terms of flight time, this usually takes a little over 11h 15m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
Prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
As of September 2026, there are 6 operators available to choose from for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
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 Kastrup Copenhagen Airport.
What documentation or ID do you need to fly to Kastrup Copenhagen Airport?
The travel and health documents required for your trip to Kastrup Copenhagen 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 Kastrup Copenhagen Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Copenhagen?
Based on momondo bookings for flights between St. Louis and Copenhagen, the leading airline is Air Canada, making up 22% of the total bookings. Other popular airlines include United Airlines with 22%, Lufthansa with 19%, and Delta with 17%.

Best airlines flying from St. Louis to Copenhagen

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $406	Free Cancellation	Rating 7.8 8,570 reviews	Search Delta flights
United Airlines	PriceFrom $592	Free Cancellation	Rating 7.4 10,209 reviews	Search United Airlines flights
Lufthansa	PriceFrom $690	Free Cancellation	Rating 6.8 8,220 reviews	Search Lufthansa flights
American Airlines	PriceFrom $693	Free Cancellation	Rating 7.1 12,061 reviews	Search American Airlines flights
Air Canada	PriceFrom $761	Free Cancellation	Rating 7.1 11,631 reviews	Search Air Canada flights
Scandinavian Airlines	PriceFrom $769	Free Cancellation	Rating 7.4 1,984 reviews	Search Scandinavian Airlines flights

Kastrup

Roskilde

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Copenhagen. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from St. Louis to Copenhagen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential St. Louis to Copenhagen flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for St. Louis to Copenhagen flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from St. Louis to Copenhagen from $354

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 Copenhagen departing on 10/6. 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 Copenhagen

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American Airlines flights from St. Louis to Copenhagen

Our best American Airlines deals on St. Louis to Copenhagen flight tickets

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

What is the typical price of a round-trip flight between St. Louis and Copenhagen?

What is the cheapest month to fly to Copenhagen?

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

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

What airlines fly to Copenhagen?

Which airport is the most popular layover for flights between St. Louis and Copenhagen?

Which layover airport offers the lowest fares from St. Louis to Copenhagen?

Which layover airport has the shortest travel time from St. Louis to Copenhagen?

Which layover airport has the shortest connection time from St. Louis to Copenhagen?

When to book flights from St. Louis to Copenhagen

Cheap St. Louis to Copenhagen (STL to CPH) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Copenhagen

Best airlines flying from St. Louis to Copenhagen

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

Traveling to a place near Copenhagen?

Why use momondo?

An easier way to manage your Copenhagen trip

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Find better results for your trip to Denmark

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

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