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Cheap flights from St. Louis to Denmark from $431

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 Denmark departing on 6/23. 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 Denmark

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
6:55 pm - 5:35 pm
STL
-
CPH
15h 40m
2 stops
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$524Lufthansa
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m
2 stops
Multiple Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$528Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
3:50 pm - 11:45 am
STL
-
CPH
12h 55m
1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$532Lufthansa
Sun, Mar 1 - Sun, Mar 8
Delta Logo
1:45 pm - 1:20 pm
STL
-
CPH
16h 35m
2 stops
Delta Logo
9:00 am - 4:40 pm
CPH
-
STL
14h 40m
1 stop
$538Delta
Mon, Apr 27 - Tue, May 12
British Airways Logo
12:11 pm - 3:40 pm
STL
-
CPH
20h 29m
2 stops
British Airways Logo
9:45 pm - 10:14 pm
CPH
-
STL
31h 29m
2 stops
$542British Airways
Mon, Apr 27 - Tue, May 12
American Airlines Logo
10:37 am - 1:30 pm
STL
-
CPH
19h 53m
2 stops
American Airlines Logo
8:40 am - 6:29 pm
CPH
-
STL
16h 49m
2 stops
$546American Airlines
Sun, Mar 1 - Sun, Mar 8
Delta Logo
1:39 pm - 1:10 pm
STL
-
CPH
17h 31m
2 stops
Delta Logo
8:10 am - 9:06 pm
CPH
-
STL
18h 56m
2 stops
$549Delta
Tue, Mar 17 - Tue, Mar 24
United Airlines Logo
3:50 pm - 11:45 am
STL
-
CPH
12h 55m
1 stop
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$555United Airlines
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
6:55 pm - 11:05 pm
STL
-
CPH
21h 10m
2 stops
United Airlines Logo
6:50 am - 3:29 pm
CPH
-
STL
38h 39m
2 stops
$556United Airlines
Wed, Mar 4 - Sun, Mar 15
United Airlines Logo
5:00 am - 11:25 am
STL
-
CPH
23h 25m
2 stops
United Airlines Logo
10:10 am - 3:29 pm
CPH
-
STL
35h 19m
2 stops
$557United Airlines
Fri, Mar 6 - Fri, Mar 13

Delta flights from St. Louis to Denmark

Our best Delta deals on St. Louis to Denmark flight tickets
Delta
Apr 27
STL1:45 pmLambert-St Louis
16h 35m
2 stops
CPH1:20 pmKastrup Copenhagen
May 12
CPH9:00 amKastrup Copenhagen
14h 40m
1 stop
STL4:40 pmLambert-St Louis
$538
Delta
Mar 17
STL1:39 pmLambert-St Louis
17h 31m
2 stops
CPH1:10 pmKastrup Copenhagen
Mar 24
CPH8:10 amKastrup Copenhagen
18h 56m
2 stops
STL9:06 pmLambert-St Louis
$549
Delta
May 26
STL5:45 pmLambert-St Louis
16h 20m
2 stops
CPH5:05 pmKastrup Copenhagen
Jun 11
CPH1:55 pmKastrup Copenhagen
16h 06m
1 stop
STL11:01 pmLambert-St Louis
$789

British Airways flights from St. Louis to Denmark

Our best British Airways deals on St. Louis to Denmark flight tickets
British Airways
Apr 27
STL12:11 pmLambert-St Louis
20h 29m
2 stops
CPH3:40 pmKastrup Copenhagen
May 12
CPH9:45 pmKastrup Copenhagen
31h 29m
2 stops
STL10:14 pmLambert-St Louis
$542
British Airways
Mar 7
STL6:53 pmLambert-St Louis
35h 37m
2 stops
CPH1:30 pmKastrup Copenhagen
Mar 15
CPH7:50 pmKastrup Copenhagen
33h 12m
2 stops
STL11:02 pmLambert-St Louis
$806
British Airways
Mar 6
STL11:59 amLambert-St Louis
16h 21m
2 stops
CPH11:20 amKastrup Copenhagen
Mar 15
CPH1:00 pmKastrup Copenhagen
36h 29m
2 stops
STL7:29 pmLambert-St Louis
$922

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Denmark 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 February 1, 2026.
Use the filters below to find and compare flights from St. Louis to Denmark that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

6:55 pm-5:35 pm

2 stops15h 40m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$524

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$528

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

3:50 pm-11:45 am

1 stop12h 55m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$532

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/27

1:45 pm-1:20 pm

2 stops16h 35m

Kastrup Copenhagen

Tue 5/12

9:00 am-4:40 pm

1 stop14h 40m

$538

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/27

12:11 pm-3:40 pm

2 stops20h 29m

Kastrup Copenhagen

Tue 5/12

9:45 pm-10:14 pm

2 stops31h 29m

$542

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

10:37 am-1:30 pm

2 stops19h 53m

Kastrup Copenhagen

Sun 3/8

8:40 am-6:29 pm

2 stops16h 49m

$546

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 3/17

1:39 pm-1:10 pm

2 stops17h 31m

Kastrup Copenhagen

Tue 3/24

8:10 am-9:06 pm

2 stops18h 56m

$549

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

3:50 pm-11:45 am

1 stop12h 55m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$555

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/4

6:55 pm-11:05 pm

2 stops21h 10m

Kastrup Copenhagen

Sun 3/15

6:50 am-3:29 pm

2 stops38h 39m

$556

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 3/6

5:00 am-11:25 am

2 stops23h 25m

Kastrup Copenhagen

Fri 3/13

10:10 am-3:29 pm

2 stops35h 19m

$557

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 Denmark from

How to get the cheapest flight ticket from St. Louis to Denmark

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 cheapest month to fly to Denmark?

In general, February is the cheapest month to fly from St. Louis to Denmark. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $651. If you aren’t able to travel to Denmark 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 Denmark?

You are more likely to see cheaper flights to Denmark from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Denmark for around $808 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denmark from St. Louis for as low as $733 on momondo.

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

You could potentially save up to 40% on your flight if you consider stops on a St. Louis to Denmark flight.

Cheap St. Louis to Denmark flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Denmark

Fastest flight time

12h 55m

Direct flights

None
The fastest flight from St. Louis to Denmark takes 12h 55m
There are no direct flights from St. Louis to Denmark. There are no popular flight routes from St. Louis to Denmark.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Denmark?

    Prices for flights from Lambert-St Louis Airport to Denmark were last updated today.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Denmark?

  • How old do you have to be to fly from Lambert-St Louis Airport to Denmark?

    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 Denmark.

  • What documentation or ID do you need to fly to Denmark?

    The necessary travel and health documents for your Denmark trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to Denmark

Compare and see reviews for airlines that fly from St. Louis to Denmark with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,709 reviews
Search British Airways flights
DeltaPriceFrom $593Free CancellationRating
7.9
8,128 reviews
Search Delta flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,226 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,446 reviews
Search KLM flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,673 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,676 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $662Free CancellationRating
6.8
7,758 reviews
Search Lufthansa flights
American AirlinesPriceFrom $684Free CancellationRating
7.2
11,210 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Denmark?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Denmark for you.

Can I find flights from St. Louis to Denmark with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Denmark flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Denmark?

Once you have performed a search for St. Louis to Denmark flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Denmark right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Denmark from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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