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Cheap flights from St. Louis to Denmark from $436

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 6/24. 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.
British Airways Logo
2:00 pm - 11:20 am
STL
-
CPH
14h 20m2 stops
British Airways Logo
12:15 pm - 11:35 pm
CPH
-
STL
18h 20m2 stops
$515British Airways
Fri, Feb 20 - Fri, Feb 27
Lufthansa Logo
6:55 pm - 5:35 pm
STL
-
CPH
15h 40m2 stops
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$528Lufthansa
Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
3:50 pm - 1:35 pm
STL
-
CPH
14h 45m1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$529Lufthansa
Sun, Mar 1 - Sun, Mar 8
Delta Logo
11:30 am - 1:10 pm
STL
-
CPH
18h 40m2 stops
Delta Logo
8:05 am - 11:58 pm
CPH
-
STL
21h 53m2 stops
$555Delta
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
7:41 am - 1:45 pm
STL
-
CPH
23h 04m2 stops
United Airlines Logo
6:50 am - 3:29 pm
CPH
-
STL
38h 39m2 stops
$565United Airlines
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
4:05 pm - 9:20 am
STL
-
CPH
35h 15m2 stops
United Airlines Logo
10:10 am - 3:29 pm
CPH
-
STL
35h 19m2 stops
$568United Airlines
Thu, Mar 12 - Thu, Mar 19
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$582United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
10:05 am - 10:58 pm
CPH
-
STL
19h 53m2 stops
$592United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
9:57 am - 2:05 pm
STL
-
CPH
21h 08m2 stops
United Airlines Logo
10:05 am - 10:58 pm
CPH
-
STL
19h 53m2 stops
$593United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
3:50 pm - 1:35 pm
STL
-
CPH
14h 45m1 stop
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$602United Airlines
Wed, Jan 21 - Sun, Jan 25

United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets
United Airlines
Mar 7
STL7:41 amLambert-St Louis
23h 04m
2 stops
CPH1:45 pmKastrup Copenhagen
Mar 15
CPH6:50 amKastrup Copenhagen
38h 39m
2 stops
STL3:29 pmLambert-St Louis
$565
United Airlines
Mar 12
STL4:05 pmLambert-St Louis
35h 15m
2 stops
CPH9:20 amKastrup Copenhagen
Mar 19
CPH10:10 amKastrup Copenhagen
35h 19m
2 stops
STL3:29 pmLambert-St Louis
$568
United Airlines
Jan 21
STL9:57 amLambert-St Louis
21h 08m
2 stops
CPH2:05 pmKastrup Copenhagen
Jan 25
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$582

British Airways flights from St. Louis to Denmark

Our best British Airways deals on St. Louis to Denmark flight tickets
British Airways
Feb 20
STL2:00 pmLambert-St Louis
14h 20m
2 stops
CPH11:20 amKastrup Copenhagen
Feb 27
CPH12:15 pmKastrup Copenhagen
18h 20m
2 stops
STL11:35 pmLambert-St Louis
$515
British Airways
Feb 13
STL2:00 pmLambert-St Louis
22h 10m
2 stops
CPH7:10 pmKastrup Copenhagen
Feb 22
CPH3:20 pmKastrup Copenhagen
36h 52m
2 stops
STL9:12 pmLambert-St Louis
$628
British Airways
Jan 21
STL11:05 amLambert-St Louis
18h 10m
2 stops
CPH12:15 pmKastrup Copenhagen
Jan 25
CPH11:50 amKastrup Copenhagen
18h 09m
2 stops
STL10:59 pmLambert-St Louis
$682

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 January 8, 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

Fri 2/20

2:00 pm-11:20 am

2 stops14h 20m

Kastrup Copenhagen

Fri 2/27

12:15 pm-11:35 pm

2 stops18h 20m

$515

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

$528

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/1

3:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 3/8

6:50 am-1:55 pm

1 stop14h 05m

$529

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

11:30 am-1:10 pm

2 stops18h 40m

Kastrup Copenhagen

Sun 3/15

8:05 am-11:58 pm

2 stops21h 53m

$555

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:41 am-1:45 pm

2 stops23h 04m

Kastrup Copenhagen

Sun 3/15

6:50 am-3:29 pm

2 stops38h 39m

$565

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 3/12

4:05 pm-9:20 am

2 stops35h 15m

Kastrup Copenhagen

Thu 3/19

10:10 am-3:29 pm

2 stops35h 19m

$568

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$582

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

10:05 am-10:58 pm

2 stops19h 53m

$592

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

9:57 am-2:05 pm

2 stops21h 08m

Kastrup Copenhagen

Sun 1/25

10:05 am-10:58 pm

2 stops19h 53m

$593

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 1/21

3:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 1/25

6:50 am-1:55 pm

1 stop14h 05m

$602

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 $667.

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 $810 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 22% 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

11h 45m

Direct flights

None
The fastest flight from St. Louis to Denmark takes 11h 45m
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
7,657 reviews
Search British Airways flights
DeltaPriceFrom $593Free CancellationRating
7.9
8,029 reviews
Search Delta flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,141 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,434 reviews
Search KLM flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,603 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.3
1,635 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,697 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,095 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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