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Cheap flights from St. Louis to Copenhagen from $436

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 6/24. 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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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.
British Airways Logo
2:00 pm - 11:20 am
STL
-
CPH
14h 20m2 stops
British Airways Logo
12:15 pm - 11:35 pm
CPH
-
STL
18h 20m2 stops
$515British Airways
Fri, Feb 20 - Fri, Feb 27
Lufthansa Logo
6:55 pm - 5:35 pm
STL
-
CPH
15h 40m2 stops
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$528Lufthansa
Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
3:50 pm - 1:35 pm
STL
-
CPH
14h 45m1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$529Lufthansa
Sun, Mar 1 - Sun, Mar 8
Delta Logo
11:30 am - 1:10 pm
STL
-
CPH
18h 40m2 stops
Delta Logo
8:05 am - 11:58 pm
CPH
-
STL
21h 53m2 stops
$555Delta
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
7:41 am - 1:45 pm
STL
-
CPH
23h 04m2 stops
United Airlines Logo
6:50 am - 3:29 pm
CPH
-
STL
38h 39m2 stops
$565United Airlines
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
4:05 pm - 9:20 am
STL
-
CPH
35h 15m2 stops
United Airlines Logo
10:10 am - 3:29 pm
CPH
-
STL
35h 19m2 stops
$568United Airlines
Thu, Mar 12 - Thu, Mar 19
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$582United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
10:05 am - 10:58 pm
CPH
-
STL
19h 53m2 stops
$592United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
10:05 am - 10:58 pm
CPH
-
STL
19h 53m2 stops
$593United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
3:50 pm - 1:35 pm
STL
-
CPH
14h 45m1 stop
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$602United Airlines
Wed, Jan 21 - Sun, Jan 25

United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Mar 7
STL7:41 amLambert-St Louis
23h 04m
2 stops
CPH1:45 pmKastrup Copenhagen
Mar 15
CPH6:50 amKastrup Copenhagen
38h 39m
2 stops
STL3:29 pmLambert-St Louis
$565
United Airlines
Mar 12
STL4:05 pmLambert-St Louis
35h 15m
2 stops
CPH9:20 amKastrup Copenhagen
Mar 19
CPH10:10 amKastrup Copenhagen
35h 19m
2 stops
STL3:29 pmLambert-St Louis
$568
United Airlines
Jan 21
STL9:57 amLambert-St Louis
21h 08m
2 stops
CPH2:05 pmKastrup Copenhagen
Jan 25
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$582

British Airways flights from St. Louis to Copenhagen

Our best British Airways deals on St. Louis to Copenhagen flight tickets
British Airways
Feb 20
STL2:00 pmLambert-St Louis
14h 20m
2 stops
CPH11:20 amKastrup Copenhagen
Feb 27
CPH12:15 pmKastrup Copenhagen
18h 20m
2 stops
STL11:35 pmLambert-St Louis
$515
British Airways
Feb 13
STL2:00 pmLambert-St Louis
22h 10m
2 stops
CPH7:10 pmKastrup Copenhagen
Feb 22
CPH3:20 pmKastrup Copenhagen
36h 52m
2 stops
STL9:12 pmLambert-St Louis
$628
British Airways
Jan 21
STL11:05 amLambert-St Louis
18h 10m
2 stops
CPH12:15 pmKastrup Copenhagen
Jan 25
CPH11:50 amKastrup Copenhagen
18h 09m
2 stops
STL10:59 pmLambert-St Louis
$682

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 January 8, 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

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 2/20

2:00 pm-11:20 am

2 stops14h 20m

Kastrup Copenhagen

Fri 2/27

12:15 pm-11:35 pm

2 stops18h 20m

$515

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

6:55 pm-5:35 pm

2 stops15h 40m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$528

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

3:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$529

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

11:30 am-1:10 pm

2 stops18h 40m

Kastrup Copenhagen

Sun 3/15

8:05 am-11:58 pm

2 stops21h 53m

$555

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:41 am-1:45 pm

2 stops23h 04m

Kastrup Copenhagen

Sun 3/15

6:50 am-3:29 pm

2 stops38h 39m

$565

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 3/12

4:05 pm-9:20 am

2 stops35h 15m

Kastrup Copenhagen

Thu 3/19

10:10 am-3:29 pm

2 stops35h 19m

$568

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$582

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

10:05 am-10:58 pm

2 stops19h 53m

$592

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

10:05 am-10:58 pm

2 stops19h 53m

$593

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

$602

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
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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?

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

11h 45m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 11h 45m
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 11h 45m.

  • 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
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,657 reviews
Search British Airways flights
DeltaPriceFrom $593Free CancellationRating
7.9
8,027 reviews
Search Delta flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,434 reviews
Search KLM flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,603 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,635 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,694 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,097 reviews
Search American 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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