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Cheap flights from St. Louis to Copenhagen from $345

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 1/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from St. Louis to Copenhagen

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
Lufthansa Logo
7:15 am - 1:45 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 30m1 stop Frankfurt am Main
$796Lufthansa
Mon, Nov 9 - Wed, Nov 18
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
Lufthansa Logo
7:15 am - 1:45 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
13h 30m1 stop Frankfurt am Main
$802Lufthansa
Mon, Nov 9 - Wed, Nov 18
Air Canada Logo
5:34 pm - 10:20 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
57h 46m2 stops Chicago O'Hare Intl Toronto Pearson Intl
Air Canada Logo
9:50 am - 3:26 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
36h 36m2 stops Zurich Toronto Pearson Intl
$814Air Canada
Sun, Jan 17 - Thu, Jan 21
United Airlines Logo
1:08 pm - 12:25 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
16h 17m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss
United Airlines Logo
7:15 am - 11:09 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
22h 54m2 stops Frankfurt am Main Chicago O'Hare Intl
$839United Airlines
Sun, Jan 17 - Thu, Jan 21
United Airlines Logo
3:40 pm - 1:30 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
14h 50m1 stop Frankfurt am Main
United Airlines Logo
10:05 am - 9:13 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
18h 08m2 stops Frankfurt am Main Chicago O'Hare Intl
$846United Airlines
Sun, Jan 17 - Thu, Jan 21
Multiple Airlines Logo
2:54 pm - 2:25 pmSTL  Lambert-St Louis-CPH Kastrup Copenhagen
16h 31m2 stops Boston Logan Intl London Heathrow
Multiple Airlines Logo
8:55 am - 7:29 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
17h 34m2 stops Helsinki-Vantaa Dallas/Fort Worth
$853Multiple Airlines
Thu, Jan 21 - Sun, Jan 31
Multiple Airlines Logo
4:05 pm - 10:20 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
11h 15m1 stop Toronto Pearson Intl
Multiple Airlines Logo
8:55 am - 10:59 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
21h 04m2 stops Helsinki-Vantaa Dallas/Fort Worth
$861Multiple Airlines
Thu, Jan 21 - Sun, Jan 31
Scandinavian Airlines Logo
12:00 pm - 10:15 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
15h 15m1 stop Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
1:35 pm - 11:42 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
17h 07m1 stop Atlanta Hartsfield-Jackson
$892Scandinavian Airlines
Mon, Sep 14 - Mon, Sep 21
Air Canada Logo
12:10 pm - 10:50 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
15h 40m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
12:45 pm - 11:57 amCPH  Kastrup Copenhagen-STL Lambert-St Louis
30h 12m2 stops Toronto Pearson Intl Chicago O'Hare Intl
$909Air Canada
Wed, Sep 9 - Tue, Sep 15
Scandinavian Airlines Logo
12:20 pm - 10:40 amSTL  Lambert-St Louis-CPH Kastrup Copenhagen
15h 20m1 stop Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
1:50 pm - 9:33 pmCPH  Kastrup Copenhagen-STL Lambert-St Louis
14h 43m1 stop Atlanta Hartsfield-Jackson
$1,082Scandinavian Airlines
Mon, Nov 9 - Wed, Nov 18

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Air Canada flights from St. Louis to Copenhagen

Our best Air Canada deals on St. Louis to Copenhagen flight tickets
Air Canada
Jan 17
STL5:34 pmLambert-St Louis
57h 46m
2 stops
CPH10:20 amKastrup Copenhagen
Jan 21
CPH9:50 amKastrup Copenhagen
36h 36m
2 stops
STL3:26 pmLambert-St Louis
$814
Air Canada
Sep 9
STL12:10 pmLambert-St Louis
15h 40m
2 stops
CPH10:50 amKastrup Copenhagen
Sep 15
CPH12:45 pmKastrup Copenhagen
30h 12m
2 stops
STL11:57 amLambert-St Louis
$909
Air Canada
Aug 17
STL8:55 amLambert-St Louis
18h 55m
1 stop
CPH10:50 amKastrup Copenhagen
Aug 24
CPH10:30 amKastrup Copenhagen
39h 12m
2 stops
STL6:42 pmLambert-St Louis
$924

Lufthansa flights from St. Louis to Copenhagen

Our best Lufthansa deals on St. Louis to Copenhagen flight tickets
Lufthansa
Nov 9
STL6:50 pmLambert-St Louis
15h 45m
2 stops
CPH5:35 pmKastrup Copenhagen
Nov 18
CPH7:15 amKastrup Copenhagen
13h 30m
1 stop
STL1:45 pmLambert-St Louis
$796
Lufthansa
Nov 9
STL6:50 pmLambert-St Louis
15h 45m
2 stops
CPH5:35 pmKastrup Copenhagen
Nov 18
CPH7:15 amKastrup Copenhagen
13h 30m
1 stop
STL1:45 pmLambert-St Louis
$802
Lufthansa
Nov 9
STL6:50 pmLambert-St Louis
15h 45m
2 stops
CPH5:35 pmKastrup Copenhagen
Nov 18
CPH7:15 amKastrup Copenhagen
13h 30m
1 stop
STL1:45 pmLambert-St Louis
$803

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Copenhagen 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 9, 2026.
Use the filters below to find and compare flights from St. Louis to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 11/9

6:50 pm-5:35 pm

2 stops15h 45m

Kastrup Copenhagen

Wed 11/18

7:15 am-1:45 pm

1 stop13h 30m

$796

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 11/9

6:50 pm-5:35 pm

2 stops15h 45m

Kastrup Copenhagen

Wed 11/18

7:15 am-1:45 pm

1 stop13h 30m

$802

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 1/17

5:34 pm-10:20 am

2 stops57h 46m

Kastrup Copenhagen

Thu 1/21

9:50 am-3:26 pm

2 stops36h 36m

$814

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 1/17

1:08 pm-12:25 pm

2 stops16h 17m

Kastrup Copenhagen

Thu 1/21

7:15 am-11:09 pm

2 stops22h 54m

$839

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Sun 1/17

3:40 pm-1:30 pm

1 stop14h 50m

Kastrup Copenhagen

Thu 1/21

10:05 am-9:13 pm

2 stops18h 08m

$846

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Thu 1/21

2:54 pm-2:25 pm

2 stops16h 31m

Kastrup Copenhagen

Sun 1/31

8:55 am-7:29 pm

2 stops17h 34m

$853

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Thu 1/21

4:05 pm-10:20 am

1 stop11h 15m

Kastrup Copenhagen

Sun 1/31

8:55 am-10:59 pm

2 stops21h 04m

$861

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 9/14

12:00 pm-10:15 am

1 stop15h 15m

Kastrup Copenhagen

Mon 9/21

1:35 pm-11:42 pm

1 stop17h 07m

$892

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Wed 9/9

12:10 pm-10:50 am

2 stops15h 40m

Kastrup Copenhagen

Tue 9/15

12:45 pm-11:57 am

2 stops30h 12m

$909

St. LouisCopenhagen

STL Lambert-St Louis - CPH Kastrup Copenhagen

STLCPH

Lambert-St Louis

Mon 11/9

12:20 pm-10:40 am

1 stop15h 20m

Kastrup Copenhagen

Wed 11/18

1:50 pm-9:33 pm

1 stop14h 43m

$1,082

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 Copenhagen from

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

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 $921 to $1,178.
The lowest price recently found on this route was $796.

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 24% 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

14h 41m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 14h 41m
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 14h 41m.

  • 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?

  • 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?

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
DeltaPriceFrom $406Free CancellationRating
7.8
8,497 reviews
Search Delta flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
8,175 reviews
Search Lufthansa flights
American AirlinesPriceFrom $693Free CancellationRating
7.1
11,892 reviews
Search American Airlines flights
Air CanadaPriceFrom $734Free CancellationRating
7.1
11,455 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $769Free CancellationRating
7.4
1,932 reviews
Search Scandinavian Airlines flights

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
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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