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

Scandinavian Airlines is the most popular carrier operating from Lambert-St Louis to Kastrup Copenhagen

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

Atlanta (ATL) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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.

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

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 40m.

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

Montreal (YUL) has the shortest average layover time for this route: 2h 40m.

What airlines fly to Copenhagen?

United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to Copenhagen from St. Louis according to our data. United Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 8 different airlines that fly to Copenhagen 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 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 January 2026, there are 8 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.

$374 Cheap Flights from St. Louis to Copenhagen in 2026

Q: 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 $654 to $784. The lowest price recently found on this route was $502.

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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.

9:37 am - 1:45 pm

STL

CPH

21h 08m

2 stops

6:55 am - 10:52 pm

CPH

STL

22h 57m

2 stops

$502British Airways

Fri, Feb 27 - Fri, Mar 6

6:00 am - 2:20 pm

STL

CPH

25h 20m

2 stops

6:55 am - 8:11 pm

CPH

STL

20h 16m

2 stops

$514British Airways

Sun, Mar 1 - Sun, Mar 8

4:05 pm - 1:45 pm

STL

CPH

14h 40m

2 stops

6:50 am - 1:55 pm

CPH

STL

14h 05m

1 stop

$537Multiple Airlines

Fri, Feb 27 - Fri, Mar 6

3:50 pm - 11:45 am

STL

CPH

12h 55m

1 stop

6:50 am - 1:55 pm

CPH

STL

14h 05m

1 stop

$551Lufthansa

Sun, Mar 1 - Sun, Mar 8

7:41 am - 6:25 pm

STL

CPH

27h 44m

2 stops

2:30 pm - 3:29 pm

CPH

STL

30h 59m

2 stops

$564United Airlines

Sat, Mar 7 - Sun, Mar 15

4:05 pm - 11:45 am

STL

CPH

36h 40m

2 stops

6:50 am - 3:29 pm

CPH

STL

38h 39m

2 stops

$567Air Canada

Sat, Mar 7 - Sun, Mar 15

3:11 pm - 2:05 pm

STL

CPH

15h 54m

2 stops

6:50 am - 1:55 pm

CPH

STL

14h 05m

1 stop

$581United Airlines

Wed, Jan 21 - Sun, Jan 25

4:05 pm - 2:05 pm

STL

CPH

15h 00m

2 stops

1:10 pm - 3:29 pm

CPH

STL

57h 19m

2 stops

$596Air Canada

Wed, Jan 21 - Sun, Jan 25

3:50 pm - 1:35 pm

STL

CPH

14h 45m

1 stop

6:50 am - 1:55 pm

CPH

STL

14h 05m

1 stop

$601United Airlines

Wed, Jan 21 - Sun, Jan 25

7:41 am - 6:25 pm

STL

CPH

27h 44m

2 stops

6:50 am - 2:55 pm

CPH

STL

14h 05m

1 stop

$736United Airlines

Sat, Mar 7 - Sun, Mar 15

British Airways flights from St. Louis to Copenhagen

Our best British Airways deals on St. Louis to Copenhagen flight tickets

British Airways

Feb 27

STL9:37 amLambert-St Louis

21h 08m

2 stops

CPH1:45 pmKastrup Copenhagen

Mar 6

CPH6:55 amKastrup Copenhagen

22h 57m

2 stops

STL10:52 pmLambert-St Louis

$502

British Airways

Mar 1

STL6:00 amLambert-St Louis

25h 20m

2 stops

CPH2:20 pmKastrup Copenhagen

Mar 8

CPH6:55 amKastrup Copenhagen

20h 16m

2 stops

STL8:11 pmLambert-St Louis

$514

British Airways

Mar 14

STL1:30 pmLambert-St Louis

16h 15m

2 stops

CPH11:45 amKastrup Copenhagen

Mar 25

CPH6:55 amKastrup Copenhagen

17h 12m

2 stops

STL6:07 pmLambert-St Louis

$3,804

Air Canada flights from St. Louis to Copenhagen

Our best Air Canada deals on St. Louis to Copenhagen flight tickets

Air Canada

Mar 7

STL4:05 pmLambert-St Louis

36h 40m

2 stops

CPH11:45 amKastrup Copenhagen

Mar 15

CPH6:50 amKastrup Copenhagen

38h 39m

2 stops

STL3:29 pmLambert-St Louis

$567

Air Canada

Jan 21

STL4:05 pmLambert-St Louis

15h 00m

2 stops

CPH2:05 pmKastrup Copenhagen

Jan 25

CPH1:10 pmKastrup Copenhagen

57h 19m

2 stops

STL3:29 pmLambert-St Louis

$596

Air Canada

Feb 27

STL4:05 pmLambert-St Louis

14h 40m

2 stops

CPH1:45 pmKastrup Copenhagen

Mar 6

CPH9:50 amKastrup Copenhagen

20h 09m

3 stops

STL10:59 pmLambert-St Louis

$2,154

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 2/27

9:37 am-1:45 pm

2 stops21h 08m

Kastrup Copenhagen

Fri 3/6

6:55 am-10:52 pm

2 stops22h 57m

$502

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

6:00 am-2:20 pm

2 stops25h 20m

Kastrup Copenhagen

Sun 3/8

6:55 am-8:11 pm

2 stops20h 16m

$514

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 2/27

4:05 pm-1:45 pm

2 stops14h 40m

Kastrup Copenhagen

Fri 3/6

6:50 am-1:55 pm

1 stop14h 05m

$537

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

3:50 pm-11:45 am

1 stop12h 55m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$551

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:41 am-6:25 pm

2 stops27h 44m

Kastrup Copenhagen

Sun 3/15

2:30 pm-3:29 pm

2 stops30h 59m

$564

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-11:45 am

2 stops36h 40m

Kastrup Copenhagen

Sun 3/15

6:50 am-3:29 pm

2 stops38h 39m

$567

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

3:11 pm-2:05 pm

2 stops15h 54m

Kastrup Copenhagen

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$581

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

4:05 pm-2:05 pm

2 stops15h 00m

Kastrup Copenhagen

Sun 1/25

1:10 pm-3:29 pm

2 stops57h 19m

$596

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

3:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$601

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:41 am-6:25 pm

2 stops27h 44m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$736

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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?

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 $651, 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 $667.

How far in advance should I book a flight to Copenhagen?

You are more likely to see cheaper flights to Copenhagen from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $810 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from St. Louis for as low as $733 on momondo.

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

You could potentially save up to 22% 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

Fastest flight time	15h 54m
Direct flights	None

The fastest flight from St. Louis to Copenhagen takes 15h 54m

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

Search flight deals

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 15h 54m.
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 January 2026, there are 8 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 United Airlines, making up 20% of the total bookings. Other popular airlines include Air Canada with 18%, American Airlines with 16%, and Delta with 16%.

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
British Airways	PriceFrom $523	Free Cancellation	Rating 6.7 7,676 reviews	Search British Airways flights
Delta	PriceFrom $593	Free Cancellation	Rating 7.9 8,049 reviews	Search Delta flights
United Airlines	PriceFrom $598	Free Cancellation	Rating 7.4 9,164 reviews	Search United Airlines flights
KLM	PriceFrom $625	Free Cancellation	Rating 7.7 1,440 reviews	Search KLM flights
Air Canada	PriceFrom $659	Free Cancellation	Rating 7.1 10,622 reviews	Search Air Canada flights
Scandinavian Airlines	PriceFrom $661	Free Cancellation	Rating 7.3 1,654 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $690	Free Cancellation	Rating 6.8 7,717 reviews	Search Lufthansa flights
American Airlines	PriceFrom $733	Free Cancellation	Rating 7.2 11,132 reviews	Search American Airlines flights

Kastrup

Roskilde

Why use momondo?

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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Airports servicing Denmark

Cheap flights from St. Louis to Copenhagen from $374

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 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.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from St. Louis to Copenhagen

Cheap round-trip flights

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British Airways flights from St. Louis to Copenhagen

Our best British Airways deals on St. Louis to Copenhagen flight tickets

Air Canada flights from St. Louis to Copenhagen

Our best Air Canada deals on St. Louis to Copenhagen flight tickets

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

See travel insights to Copenhagen from

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?

How far in advance should I book a flight to Copenhagen?

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

You could potentially save up to 22% on your flight if you consider stops on a St. Louis to Copenhagen flight.

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

Scandinavian Airlines is the most popular carrier operating 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?

Atlanta (ATL) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

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.

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

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 40m.

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

Montreal (YUL) has the shortest average layover time for this route: 2h 40m.

When to book flights from St. Louis to Copenhagen

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

Fastest flight time

Direct flights

How far is Lambert-St Louis to Kastrup Copenhagen by plane?

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

How many operators does momondo search 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?

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

What is the most popular airline 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?

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

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

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

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

An easier way to manage your Copenhagen 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

Airports servicing Denmark