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Cheap flights from St. Louis to Copenhagen from $550

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Copenhagen departing on 2/5. 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.
United Airlines Logo
8:30 am - 5:35 pm
STL
-
CPH
26h 05m2 stops
United Airlines Logo
7:05 am - 3:29 pm
CPH
-
STL
39h 24m2 stops
$550United Airlines
Thu, Feb 5 - Thu, Feb 12
United Airlines Logo
6:30 am - 11:25 am
STL
-
CPH
21h 55m2 stops
United Airlines Logo
7:05 am - 3:29 pm
CPH
-
STL
39h 24m2 stops
$551United Airlines
Thu, Feb 5 - Thu, Feb 12
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
12:45 pm - 3:29 pm
CPH
-
STL
32h 44m2 stops
$553Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
8:45 am - 5:35 pm
STL
-
CPH
25h 50m2 stops
United Airlines Logo
6:50 am - 7:14 pm
CPH
-
STL
19h 24m2 stops
$554United Airlines
Sat, Feb 7 - Sat, Feb 14
Lufthansa Logo
7:00 pm - 9:20 am
STL
-
CPH
31h 20m2 stops
Lufthansa Logo
10:05 am - 11:51 pm
CPH
-
STL
43h 46m2 stops
$591Lufthansa
Sat, Mar 7 - Sun, Mar 15
British Airways Logo
11:14 am - 12:05 pm
STL
-
CPH
17h 51m2 stops
British Airways Logo
8:50 am - 6:17 pm
CPH
-
STL
16h 27m2 stops
$612British Airways
Sun, Apr 19 - Sat, Apr 25
United Airlines Logo
9:10 am - 5:20 pm
STL
-
CPH
25h 10m2 stops
United Airlines Logo
12:25 pm - 1:25 pm
CPH
-
STL
32h 00m1 stop
$615United Airlines
Sun, Apr 12 - Sat, Apr 18
United Airlines Logo
3:30 pm - 6:05 pm
STL
-
CPH
19h 35m1 stop
United Airlines Logo
2:50 pm - 1:25 pm
CPH
-
STL
29h 35m1 stop
$622United Airlines
Sun, Apr 12 - Sat, Apr 18
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m1 stop
$646Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
American Airlines Logo
4:39 pm - 4:15 pm
STL
-
CPH
16h 36m2 stops
American Airlines Logo
12:25 pm - 9:48 pm
CPH
-
STL
16h 23m2 stops
$668American Airlines
Sun, Apr 12 - Sat, Apr 18

United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Feb 19
STL7:41 amLambert-St Louis
32h 24m
2 stops
CPH11:05 pmKastrup Copenhagen
Feb 27
CPH2:30 pmKastrup Copenhagen
31h 59m
2 stops
STL3:29 pmLambert-St Louis
$550
Find similar
United Airlines
Feb 5
STL6:30 amLambert-St Louis
21h 55m
2 stops
CPH11:25 amKastrup Copenhagen
Feb 12
CPH7:05 amKastrup Copenhagen
39h 24m
2 stops
STL3:29 pmLambert-St Louis
$551
Find similar
United Airlines
Feb 7
STL8:45 amLambert-St Louis
25h 50m
2 stops
CPH5:35 pmKastrup Copenhagen
Feb 14
CPH6:50 amKastrup Copenhagen
19h 24m
2 stops
STL7:14 pmLambert-St Louis
$554
Find similar

Lufthansa flights from St. Louis to Copenhagen

Our best Lufthansa deals on St. Louis to Copenhagen flight tickets
Lufthansa
Mar 7
STL7:00 pmLambert-St Louis
33h 45m
2 stops
CPH11:45 amKastrup Copenhagen
Mar 15
CPH10:05 amKastrup Copenhagen
43h 46m
2 stops
STL11:51 pmLambert-St Louis
$591
Find similar
Lufthansa
Feb 24
STL1:11 pmLambert-St Louis
16h 14m
2 stops
CPH12:25 pmKastrup Copenhagen
Mar 7
CPH7:00 pmKastrup Copenhagen
25h 55m
1 stop
STL1:55 pmLambert-St Louis
$4,320
Find similar
Lufthansa
Feb 22
STL6:55 pmLambert-St Louis
15h 40m
2 stops
CPH5:35 pmKastrup Copenhagen
Mar 5
CPH6:50 pmKastrup Copenhagen
26h 05m
1 stop
STL1:55 pmLambert-St Louis
$4,384
Find similar

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 December 24, 2025.
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

Thu 2/5

8:30 am-5:35 pm

2 stops26h 05m

Kastrup Copenhagen

Thu 2/12

7:05 am-3:29 pm

2 stops39h 24m

$550

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 2/5

6:30 am-11:25 am

2 stops21h 55m

Kastrup Copenhagen

Thu 2/12

7:05 am-3:29 pm

2 stops39h 24m

$551

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

12:45 pm-3:29 pm

2 stops32h 44m

$553

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 2/7

8:45 am-5:35 pm

2 stops25h 50m

Kastrup Copenhagen

Sat 2/14

6:50 am-7:14 pm

2 stops19h 24m

$554

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:00 pm-9:20 am

2 stops31h 20m

Kastrup Copenhagen

Sun 3/15

10:05 am-11:51 pm

2 stops43h 46m

$591

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 4/19

11:14 am-12:05 pm

2 stops17h 51m

Kastrup Copenhagen

Sat 4/25

8:50 am-6:17 pm

2 stops16h 27m

$612

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 4/12

9:10 am-5:20 pm

2 stops25h 10m

Kastrup Copenhagen

Sat 4/18

12:25 pm-1:25 pm

1 stop32h 00m

$615

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 4/12

3:30 pm-6:05 pm

1 stop19h 35m

Kastrup Copenhagen

Sat 4/18

2:50 pm-1:25 pm

1 stop29h 35m

$622

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$646

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 4/12

4:39 pm-4:15 pm

2 stops16h 36m

Kastrup Copenhagen

Sat 4/18

12:25 pm-9:48 pm

2 stops16h 23m

$668

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 $668.

What is the cheapest day to depart on your flight to Copenhagen?

The cheapest day to depart from St. Louis to Copenhagen is on a Tuesday when prices can be found for as low as $727. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Copenhagen for around $1,340.

What is the cheapest time of day to depart on your flight to Copenhagen?

Flying to Copenhagen from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $839 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around $1,047. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $819 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 $743 on momondo.

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

You could potentially save up to 25% 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 14m

Direct flights

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

  • 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
7,612 reviews
Search British Airways flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,434 reviews
Search KLM flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,011 reviews
Search Delta flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,555 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.4
1,623 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,653 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,058 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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