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Cheap flights from St. Louis to Copenhagen from $321

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 5/4. 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.
Scandinavian Airlines Logo
1:30 pm - 10:15 am
STL
-
CPH
13h 45m
1 stop
Scandinavian Airlines Logo
1:35 pm - 8:50 pm
CPH
-
STL
14h 15m
1 stop
$760Scandinavian Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
1:30 pm - 11:35 am
STL
-
CPH
15h 05m
1 stop
Multiple Airlines Logo
7:25 pm - 7:46 pm
CPH
-
STL
31h 21m
2 stops
$770Multiple Airlines
Mon, Sep 7 - Mon, Sep 28
British Airways Logo
1:30 pm - 4:10 pm
STL
-
CPH
19h 40m
2 stops
British Airways Logo
3:20 pm - 11:42 pm
CPH
-
STL
15h 22m
1 stop
$775British Airways
Wed, Aug 19 - Wed, Sep 2
Multiple Airlines Logo
9:45 am - 3:40 pm
STL
-
CPH
22h 55m
2 stops
Multiple Airlines Logo
7:25 pm - 7:46 pm
CPH
-
STL
31h 21m
2 stops
$777Multiple Airlines
Mon, Sep 7 - Mon, Sep 28
KLM Logo
5:30 pm - 11:45 am
STL
-
CPH
11h 15m
1 stop
KLM Logo
9:00 am - 4:55 pm
CPH
-
STL
14h 55m
1 stop
$781KLM
Wed, Aug 19 - Wed, Sep 2
Scandinavian Airlines Logo
3:42 pm - 10:15 am
STL
-
CPH
11h 33m
1 stop
Scandinavian Airlines Logo
1:35 pm - 11:37 pm
CPH
-
STL
17h 02m
1 stop
$783Scandinavian Airlines
Mon, Aug 17 - Thu, Sep 3
Delta Logo
6:00 am - 6:45 am
STL
-
CPH
17h 45m
2 stops
Delta Logo
9:00 am - 5:05 pm
CPH
-
STL
15h 05m
1 stop
$785Delta
Tue, May 5 - Tue, May 12
Delta Logo
6:30 am - 11:45 am
STL
-
CPH
22h 15m
1 stop
Delta Logo
1:55 pm - 11:01 pm
CPH
-
STL
16h 06m
1 stop
$787Delta
Wed, Sep 9 - Mon, Sep 28
Delta Logo
4:13 pm - 6:45 am
STL
-
CPH
31h 32m
1 stop
Delta Logo
9:00 am - 4:55 pm
CPH
-
STL
14h 55m
1 stop
$788Delta
Sat, Sep 5 - Tue, Sep 29
KLM Logo
4:13 pm - 6:45 am
STL
-
CPH
31h 32m
1 stop
KLM Logo
1:55 pm - 11:01 pm
CPH
-
STL
16h 06m
1 stop
$789KLM
Mon, Sep 14 - Mon, Sep 21

Scandinavian Airlines flights from St. Louis to Copenhagen

Our best Scandinavian Airlines deals on St. Louis to Copenhagen flight tickets
Scandinavian Airlines
Aug 17
STL3:42 pmLambert-St Louis
11h 33m
1 stop
CPH10:15 amKastrup Copenhagen
Aug 24
CPH1:35 pmKastrup Copenhagen
14h 15m
1 stop
STL8:50 pmLambert-St Louis
$760
Scandinavian Airlines
Aug 17
STL3:42 pmLambert-St Louis
11h 33m
1 stop
CPH10:15 amKastrup Copenhagen
Sep 3
CPH1:35 pmKastrup Copenhagen
17h 02m
1 stop
STL11:37 pmLambert-St Louis
$783
Scandinavian Airlines
Aug 20
STL1:30 pmLambert-St Louis
13h 45m
1 stop
CPH10:15 amKastrup Copenhagen
Sep 3
CPH1:35 pmKastrup Copenhagen
17h 02m
1 stop
STL11:37 pmLambert-St Louis
$810

Lufthansa flights from St. Louis to Copenhagen

Our best Lufthansa deals on St. Louis to Copenhagen flight tickets
Lufthansa
Aug 17
STL3:30 pmLambert-St Louis
13h 05m
1 stop
CPH11:35 amKastrup Copenhagen
Aug 24
CPH6:40 amKastrup Copenhagen
21h 42m
2 stops
STL9:22 pmLambert-St Louis
$843
Lufthansa
Sep 13
STL1:18 pmLambert-St Louis
20h 07m
2 stops
CPH4:25 pmKastrup Copenhagen
Sep 21
CPH7:25 pmKastrup Copenhagen
25h 00m
2 stops
STL1:25 pmLambert-St Louis
$848
Lufthansa
Aug 31
STL6:55 pmLambert-St Louis
14h 40m
2 stops
CPH4:35 pmKastrup Copenhagen
Sep 15
CPH6:20 amKastrup Copenhagen
14h 05m
1 stop
STL1:25 pmLambert-St Louis
$852

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 April 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

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

1:30 pm-10:15 am

1 stop13h 45m

Kastrup Copenhagen

Mon 8/24

1:35 pm-8:50 pm

1 stop14h 15m

$760

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 9/7

1:30 pm-11:35 am

1 stop15h 05m

Kastrup Copenhagen

Mon 9/28

7:25 pm-7:46 pm

2 stops31h 21m

$770

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 8/19

1:30 pm-4:10 pm

2 stops19h 40m

Kastrup Copenhagen

Wed 9/2

3:20 pm-11:42 pm

1 stop15h 22m

$775

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 9/7

9:45 am-3:40 pm

2 stops22h 55m

Kastrup Copenhagen

Mon 9/28

7:25 pm-7:46 pm

2 stops31h 21m

$777
Quickest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 8/19

5:30 pm-11:45 am

1 stop11h 15m

Kastrup Copenhagen

Wed 9/2

9:00 am-4:55 pm

1 stop14h 55m

$781

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

3:42 pm-10:15 am

1 stop11h 33m

Kastrup Copenhagen

Thu 9/3

1:35 pm-11:37 pm

1 stop17h 02m

$783

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 5/5

6:00 am-6:45 am

2 stops17h 45m

Kastrup Copenhagen

Tue 5/12

9:00 am-5:05 pm

1 stop15h 05m

$785

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 9/9

6:30 am-11:45 am

1 stop22h 15m

Kastrup Copenhagen

Mon 9/28

1:55 pm-11:01 pm

1 stop16h 06m

$787

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 9/5

4:13 pm-6:45 am

1 stop31h 32m

Kastrup Copenhagen

Tue 9/29

9:00 am-4:55 pm

1 stop14h 55m

$788

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 9/14

4:13 pm-6:45 am

1 stop31h 32m

Kastrup Copenhagen

Mon 9/21

1:55 pm-11:01 pm

1 stop16h 06m

$789

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

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

You could potentially save up to 9% 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 33m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 11h 33m
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 11h 33m.

  • 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
7,866 reviews
Search British Airways flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,557 reviews
Search United Airlines flights
American AirlinesPriceFrom $635Free CancellationRating
7.1
11,564 reviews
Search American Airlines flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,393 reviews
Search Delta flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,910 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,748 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,900 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

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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.

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