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Cheap flights from St. Louis to Copenhagen from $294

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 2/15. 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
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.
Finnair Logo
11:22 am - 6:35 pm
STL
-
CPH
25h 13m
2 stops
Finnair Logo
8:40 am - 11:58 pm
CPH
-
STL
21h 18m
2 stops
$557Finnair
Wed, Mar 11 - Wed, Mar 18
United Airlines Logo
11:25 am - 1:45 pm
STL
-
CPH
19h 20m
2 stops
United Airlines Logo
2:30 pm - 9:07 pm
CPH
-
STL
36h 37m
2 stops
$590United Airlines
Thu, Mar 5 - Sun, Mar 15
United Airlines Logo
10:00 am - 9:20 am
STL
-
CPH
16h 20m
2 stops
United Airlines Logo
2:20 pm - 10:16 pm
CPH
-
STL
37h 56m
2 stops
$639United Airlines
Thu, Mar 5 - Mon, Mar 16
United Airlines Logo
3:30 pm - 11:40 am
STL
-
CPH
13h 10m
1 stop
United Airlines Logo
12:45 pm - 10:28 pm
CPH
-
STL
40h 43m
2 stops
$641United Airlines
Fri, Apr 10 - Sun, Apr 12
Lufthansa Logo
4:50 pm - 6:05 pm
STL
-
CPH
19h 15m
1 stop
Lufthansa Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m
1 stop
$643Lufthansa
Sun, Mar 22 - Sun, Apr 5
United Airlines Logo
7:00 pm - 6:05 pm
STL
-
CPH
17h 05m
2 stops
United Airlines Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m
1 stop
$654United Airlines
Sun, Mar 22 - Sun, Apr 5
United Airlines Logo
11:25 am - 9:20 am
STL
-
CPH
15h 55m
2 stops
United Airlines Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m
1 stop
$656United Airlines
Wed, Mar 11 - Wed, Mar 18
Delta Logo
11:55 am - 1:40 pm
STL
-
CPH
18h 45m
2 stops
Delta Logo
8:10 am - 11:58 pm
CPH
-
STL
21h 48m
2 stops
$661Delta
Sat, Mar 7 - Sun, Mar 15
Lufthansa Logo
4:50 pm - 6:05 pm
STL
-
CPH
19h 15m
1 stop
Lufthansa Logo
6:00 am - 1:25 pm
CPH
-
STL
14h 25m
2 stops
$663Lufthansa
Sun, Mar 22 - Sun, Apr 5
Lufthansa Logo
4:50 pm - 5:35 pm
STL
-
CPH
18h 45m
2 stops
Lufthansa Logo
6:00 am - 1:25 pm
CPH
-
STL
14h 25m
2 stops
$686Lufthansa
Sun, Mar 22 - Sun, Apr 5

United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Mar 5
STL11:25 amLambert-St Louis
19h 20m
2 stops
CPH1:45 pmKastrup Copenhagen
Mar 15
CPH2:30 pmKastrup Copenhagen
36h 37m
2 stops
STL9:07 pmLambert-St Louis
$590
United Airlines
Mar 5
STL10:00 amLambert-St Louis
16h 20m
2 stops
CPH9:20 amKastrup Copenhagen
Mar 16
CPH2:20 pmKastrup Copenhagen
37h 56m
2 stops
STL10:16 pmLambert-St Louis
$639
United Airlines
Apr 10
STL3:30 pmLambert-St Louis
13h 10m
1 stop
CPH11:40 amKastrup Copenhagen
Apr 12
CPH12:45 pmKastrup Copenhagen
40h 43m
2 stops
STL10:28 pmLambert-St Louis
$641

American Airlines flights from St. Louis to Copenhagen

Our best American Airlines deals on St. Louis to Copenhagen flight tickets
American Airlines
May 25
STL5:46 pmLambert-St Louis
10h 49m
1 stop
CPH11:35 amKastrup Copenhagen
Jun 2
CPH3:20 pmKastrup Copenhagen
13h 08m
1 stop
STL9:28 pmLambert-St Louis
$781
American Airlines
May 31
STL5:46 pmLambert-St Louis
16h 34m
2 stops
CPH5:20 pmKastrup Copenhagen
Jun 3
CPH3:20 pmKastrup Copenhagen
26h 19m
1 stop
STL10:39 amLambert-St Louis
$784
American Airlines
May 31
STL5:46 pmLambert-St Louis
16h 34m
2 stops
CPH5:20 pmKastrup Copenhagen
Jun 3
CPH12:25 pmKastrup Copenhagen
18h 17m
2 stops
STL11:42 pmLambert-St Louis
$787

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 29, 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

Wed 3/11

11:22 am-6:35 pm

2 stops25h 13m

Kastrup Copenhagen

Wed 3/18

8:40 am-11:58 pm

2 stops21h 18m

$557

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 3/5

11:25 am-1:45 pm

2 stops19h 20m

Kastrup Copenhagen

Sun 3/15

2:30 pm-9:07 pm

2 stops36h 37m

$590

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 3/5

10:00 am-9:20 am

2 stops16h 20m

Kastrup Copenhagen

Mon 3/16

2:20 pm-10:16 pm

2 stops37h 56m

$639

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 4/10

3:30 pm-11:40 am

1 stop13h 10m

Kastrup Copenhagen

Sun 4/12

12:45 pm-10:28 pm

2 stops40h 43m

$641

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/22

4:50 pm-6:05 pm

1 stop19h 15m

Kastrup Copenhagen

Sun 4/5

6:20 am-1:25 pm

1 stop14h 05m

$643

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/22

7:00 pm-6:05 pm

2 stops17h 05m

Kastrup Copenhagen

Sun 4/5

6:20 am-1:25 pm

1 stop14h 05m

$654

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/11

11:25 am-9:20 am

2 stops15h 55m

Kastrup Copenhagen

Wed 3/18

6:50 am-2:55 pm

1 stop14h 05m

$656

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

11:55 am-1:40 pm

2 stops18h 45m

Kastrup Copenhagen

Sun 3/15

8:10 am-11:58 pm

2 stops21h 48m

$661

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/22

4:50 pm-6:05 pm

1 stop19h 15m

Kastrup Copenhagen

Sun 4/5

6:00 am-1:25 pm

2 stops14h 25m

$663

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/22

4:50 pm-5:35 pm

2 stops18h 45m

Kastrup Copenhagen

Sun 4/5

6:00 am-1:25 pm

2 stops14h 25m

$686

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?

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 $680.

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 $808 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 40% 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

16h 20m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 16h 20m
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 16h 20m.

  • 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
7,705 reviews
Search British Airways flights
DeltaPriceFrom $593Free CancellationRating
7.9
8,127 reviews
Search Delta flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,443 reviews
Search KLM flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,674 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $662Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,206 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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