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Cheap flights from St. Louis to Copenhagen from $379

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 7/18. 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

Discover deals from 900+ travel sites with momondo.

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
4:15 pm - 1:30 pm
STL
-
CPH
38h 15m
2 stops
Air Canada Logo
11:35 am - 2:18 pm
CPH
-
STL
33h 43m
2 stops
$781Air Canada
Sun, Nov 1 - Wed, Nov 4
Air Canada Logo
4:15 pm - 6:25 pm
STL
-
CPH
43h 10m
2 stops
Air Canada Logo
11:35 am - 3:38 pm
CPH
-
STL
35h 03m
2 stops
$782Air Canada
Sun, Nov 1 - Wed, Nov 4
Air Canada Logo
4:15 pm - 2:10 pm
STL
-
CPH
14h 55m
2 stops
Air Canada Logo
11:35 am - 2:18 pm
CPH
-
STL
33h 43m
2 stops
$786Air Canada
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
4:15 pm - 1:30 pm
STL
-
CPH
38h 15m
2 stops
United Airlines Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$793United Airlines
Sun, Nov 1 - Wed, Nov 4
United Airlines Logo
4:15 pm - 9:15 am
STL
-
CPH
34h 00m
2 stops
United Airlines Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$794United Airlines
Tue, Dec 8 - Fri, Dec 11
Air Canada Logo
4:15 pm - 2:10 pm
STL
-
CPH
14h 55m
2 stops
Air Canada Logo
11:35 am - 3:30 pm
CPH
-
STL
34h 55m
1 stop
$800Air Canada
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
6:30 am - 12:00 pm
STL
-
CPH
22h 30m
3 stops
United Airlines Logo
6:55 am - 6:38 pm
CPH
-
STL
18h 43m
2 stops
$801United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
4:15 pm - 10:20 am
STL
-
CPH
11h 05m
1 stop
United Airlines Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$824United Airlines
Tue, Dec 8 - Fri, Dec 11
United Airlines Logo
4:15 pm - 10:20 am
STL
-
CPH
11h 05m
1 stop
United Airlines Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$825United Airlines
Tue, Dec 8 - Fri, Dec 11
British Airways Logo
9:40 pm - 10:40 pm
STL
-
CPH
18h 00m
1 stop
British Airways Logo
3:20 pm - 11:34 pm
CPH
-
STL
15h 14m
1 stop
$831British Airways
Sun, Aug 2 - Mon, Aug 17

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United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Nov 1
STL4:15 pmLambert-St Louis
38h 15m
2 stops
CPH1:30 pmKastrup Copenhagen
Nov 4
CPH7:10 amKastrup Copenhagen
13h 35m
1 stop
STL1:45 pmLambert-St Louis
$793
United Airlines
Dec 8
STL4:15 pmLambert-St Louis
34h 00m
2 stops
CPH9:15 amKastrup Copenhagen
Dec 11
CPH7:10 amKastrup Copenhagen
13h 35m
1 stop
STL1:45 pmLambert-St Louis
$794
United Airlines
Nov 16
STL6:30 amLambert-St Louis
22h 30m
3 stops
CPH12:00 pmKastrup Copenhagen
Nov 18
CPH6:55 amKastrup Copenhagen
18h 43m
2 stops
STL6:38 pmLambert-St Louis
$801

Lufthansa flights from St. Louis to Copenhagen

Our best Lufthansa deals on St. Louis to Copenhagen flight tickets
Lufthansa
Aug 2
STL7:05 pmLambert-St Louis
14h 20m
2 stops
CPH4:25 pmKastrup Copenhagen
Aug 17
CPH3:10 pmKastrup Copenhagen
29h 15m
1 stop
STL1:25 pmLambert-St Louis
$869
Lufthansa
Nov 8
STL6:45 pmLambert-St Louis
15h 50m
2 stops
CPH5:35 pmKastrup Copenhagen
Nov 14
CPH7:10 amKastrup Copenhagen
17h 59m
2 stops
STL6:09 pmLambert-St Louis
$873
Lufthansa
Aug 17
STL6:54 pmLambert-St Louis
14h 41m
2 stops
CPH4:35 pmKastrup Copenhagen
Aug 24
CPH6:45 pmKastrup Copenhagen
25h 40m
1 stop
STL1:25 pmLambert-St Louis
$875

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 June 12, 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

Sun 11/1

4:15 pm-1:30 pm

2 stops38h 15m

Kastrup Copenhagen

Wed 11/4

11:35 am-2:18 pm

2 stops33h 43m

$781

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 11/1

4:15 pm-6:25 pm

2 stops43h 10m

Kastrup Copenhagen

Wed 11/4

11:35 am-3:38 pm

2 stops35h 03m

$782

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/16

4:15 pm-2:10 pm

2 stops14h 55m

Kastrup Copenhagen

Wed 11/18

11:35 am-2:18 pm

2 stops33h 43m

$786

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 11/1

4:15 pm-1:30 pm

2 stops38h 15m

Kastrup Copenhagen

Wed 11/4

7:10 am-1:45 pm

1 stop13h 35m

$793

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 12/8

4:15 pm-9:15 am

2 stops34h 00m

Kastrup Copenhagen

Fri 12/11

7:10 am-1:45 pm

1 stop13h 35m

$794

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/16

4:15 pm-2:10 pm

2 stops14h 55m

Kastrup Copenhagen

Wed 11/18

11:35 am-3:30 pm

1 stop34h 55m

$800

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/16

6:30 am-12:00 pm

3 stops22h 30m

Kastrup Copenhagen

Wed 11/18

6:55 am-6:38 pm

2 stops18h 43m

$801
Quickest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 12/8

4:15 pm-10:20 am

1 stop11h 05m

Kastrup Copenhagen

Fri 12/11

7:10 am-1:45 pm

1 stop13h 35m

$824

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 12/8

4:15 pm-10:20 am

1 stop11h 05m

Kastrup Copenhagen

Fri 12/11

7:10 am-1:45 pm

1 stop13h 35m

$825

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 8/2

9:40 pm-10:40 pm

1 stop18h 00m

Kastrup Copenhagen

Mon 8/17

3:20 pm-11:34 pm

1 stop15h 14m

$831

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 January is also cheap. Prices for this month can be found on momondo for an average of $667.

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

You could potentially save up to 1% 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

13h 35m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 13h 35m
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 13h 35m.

  • 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
8,047 reviews
Search British Airways flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,816 reviews
Search United Airlines flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,406 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.4
1,821 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $684Free CancellationRating
7.1
11,650 reviews
Search American Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
8,057 reviews
Search Lufthansa flights
Air CanadaPriceFrom $761Free CancellationRating
7.1
11,172 reviews
Search Air Canada 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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Why should I use momondo to find a flight deal from St. Louis to Copenhagen?

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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.

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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