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Cheap flights from St. Louis to Copenhagen from $289

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 5/18. 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.
Air Canada Logo
4:05 pm - 10:50 am
STL
-
CPH
11h 45m
1 stop
Air Canada Logo
6:20 am - 8:25 pm
CPH
-
STL
21h 05m
2 stops
$667Air Canada
Mon, Apr 20 - Wed, May 6
Multiple Airlines Logo
9:40 pm - 11:10 pm
STL
-
CPH
18h 30m
2 stops
Multiple Airlines Logo
7:50 am - 8:23 pm
CPH
-
STL
19h 33m
2 stops
$672Multiple Airlines
Sun, Aug 9 - Sat, Aug 22
Multiple Airlines Logo
4:05 pm - 10:50 am
STL
-
CPH
11h 45m
1 stop
Multiple Airlines Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m
1 stop
$680Multiple Airlines
Mon, Apr 20 - Wed, May 6
United Airlines Logo
4:05 pm - 10:50 am
STL
-
CPH
11h 45m
1 stop
United Airlines Logo
12:45 pm - 10:28 pm
CPH
-
STL
40h 43m
2 stops
$697United Airlines
Tue, Apr 21 - Tue, Apr 28
Delta Logo
6:25 am - 6:45 am
STL
-
CPH
17h 20m
1 stop
Delta Logo
9:00 am - 7:26 pm
CPH
-
STL
17h 26m
1 stop
$699Delta
Mon, Apr 20 - Wed, May 6
United Airlines Logo
6:55 pm - 8:55 am
STL
-
CPH
31h 00m
2 stops
United Airlines Logo
12:45 pm - 12:13 pm
CPH
-
STL
30h 28m
2 stops
$701United Airlines
Mon, Aug 31 - Tue, Sep 15
Multiple Airlines Logo
12:10 pm - 8:55 am
STL
-
CPH
13h 45m
1 stop
Multiple Airlines Logo
7:50 pm - 7:30 pm
CPH
-
STL
30h 40m
1 stop
$702Multiple Airlines
Fri, Aug 7 - Sat, Aug 22
Delta Logo
9:59 am - 9:15 am
STL
-
CPH
16h 16m
2 stops
Delta Logo
9:00 am - 7:26 pm
CPH
-
STL
17h 26m
1 stop
$703Delta
Mon, Apr 20 - Wed, May 6
Multiple Airlines Logo
12:10 pm - 10:50 am
STL
-
CPH
15h 40m
2 stops
Multiple Airlines Logo
7:50 pm - 7:30 pm
CPH
-
STL
30h 40m
1 stop
$705Multiple Airlines
Fri, Aug 7 - Sat, Aug 22
Multiple Airlines Logo
11:42 am - 9:15 am
STL
-
CPH
14h 33m
2 stops
Multiple Airlines Logo
6:00 am - 3:32 pm
CPH
-
STL
16h 32m
2 stops
$708Multiple Airlines
Wed, Apr 22 - Wed, Apr 29

Air Canada flights from St. Louis to Copenhagen

Our best Air Canada deals on St. Louis to Copenhagen flight tickets
Air Canada
Apr 20
STL4:05 pmLambert-St Louis
11h 45m
1 stop
CPH10:50 amKastrup Copenhagen
May 6
CPH6:20 amKastrup Copenhagen
21h 05m
2 stops
STL8:25 pmLambert-St Louis
$667
Air Canada
Apr 22
STL6:15 amLambert-St Louis
19h 40m
3 stops
CPH8:55 amKastrup Copenhagen
Apr 29
CPH12:45 pmKastrup Copenhagen
15h 28m
2 stops
STL9:13 pmLambert-St Louis
$709
Air Canada
Sep 3
STL12:10 pmLambert-St Louis
13h 45m
1 stop
CPH8:55 amKastrup Copenhagen
Sep 8
CPH12:45 pmKastrup Copenhagen
31h 04m
2 stops
STL12:49 pmLambert-St Louis
$747

United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Apr 21
STL4:05 pmLambert-St Louis
11h 45m
1 stop
CPH10:50 amKastrup Copenhagen
Apr 28
CPH12:45 pmKastrup Copenhagen
40h 43m
2 stops
STL10:28 pmLambert-St Louis
$697
United Airlines
Aug 31
STL6:55 pmLambert-St Louis
31h 00m
2 stops
CPH8:55 amKastrup Copenhagen
Sep 15
CPH12:45 pmKastrup Copenhagen
30h 28m
2 stops
STL12:13 pmLambert-St Louis
$701
United Airlines
Apr 21
STL4:05 pmLambert-St Louis
11h 45m
1 stop
CPH10:50 amKastrup Copenhagen
Apr 28
CPH12:45 pmKastrup Copenhagen
33h 40m
1 stop
STL3:25 pmLambert-St Louis
$710

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 March 11, 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

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/20

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Wed 5/6

6:20 am-8:25 pm

2 stops21h 05m

$667

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 8/9

9:40 pm-11:10 pm

2 stops18h 30m

Kastrup Copenhagen

Sat 8/22

7:50 am-8:23 pm

2 stops19h 33m

$672
Quickest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/20

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Wed 5/6

6:20 am-1:25 pm

1 stop14h 05m

$680

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/21

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Tue 4/28

12:45 pm-10:28 pm

2 stops40h 43m

$697

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/20

6:25 am-6:45 am

1 stop17h 20m

Kastrup Copenhagen

Wed 5/6

9:00 am-7:26 pm

1 stop17h 26m

$699

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/31

6:55 pm-8:55 am

2 stops31h 00m

Kastrup Copenhagen

Tue 9/15

12:45 pm-12:13 pm

2 stops30h 28m

$701

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 8/7

12:10 pm-8:55 am

1 stop13h 45m

Kastrup Copenhagen

Sat 8/22

7:50 pm-7:30 pm

1 stop30h 40m

$702

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/20

9:59 am-9:15 am

2 stops16h 16m

Kastrup Copenhagen

Wed 5/6

9:00 am-7:26 pm

1 stop17h 26m

$703

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 8/7

12:10 pm-10:50 am

2 stops15h 40m

Kastrup Copenhagen

Sat 8/22

7:50 pm-7:30 pm

1 stop30h 40m

$705

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/22

11:42 am-9:15 am

2 stops14h 33m

Kastrup Copenhagen

Wed 4/29

6:00 am-3:32 pm

2 stops16h 32m

$708

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 $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 April is also cheap. Prices for this month can be found on momondo for an average of $640.

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 $778 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 $601 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

15h 00m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 15h 00m
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 00m.

  • 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
7,781 reviews
Search British Airways flights
DeltaPriceFrom $590Free CancellationRating
7.9
8,281 reviews
Search Delta flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,415 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.3
1,710 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $655Free CancellationRating
7.1
10,800 reviews
Search Air Canada flights
American AirlinesPriceFrom $684Free CancellationRating
7.1
11,425 reviews
Search American Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,843 reviews
Search Lufthansa 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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