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Cheap flights from St. Louis to Denmark from $248

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 4/15. 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.
United Airlines Logo
9:10 am - 4:25 pm
STL
-
CPH
24h 15m2 stops
United Airlines Logo
12:45 pm - 9:08 pm
CPH
-
STL
39h 23m2 stops
$530United Airlines
Wed, Apr 15 - Tue, Apr 21
United Airlines Logo
10:00 am - 5:20 pm
STL
-
CPH
24h 20m2 stops
United Airlines Logo
12:45 pm - 10:28 pm
CPH
-
STL
40h 43m2 stops
$531United Airlines
Wed, Apr 1 - Tue, Apr 7
Delta Logo
11:23 am - 1:10 pm
STL
-
CPH
18h 47m2 stops
Delta Logo
9:55 am - 11:23 pm
CPH
-
STL
20h 28m2 stops
$546Delta
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
10:05 am - 3:29 pm
CPH
-
STL
35h 24m2 stops
$554Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
4:50 pm - 1:35 pm
STL
-
CPH
14h 45m1 stop
Multiple Airlines Logo
12:45 pm - 3:29 pm
CPH
-
STL
32h 44m2 stops
$558Multiple Airlines
Sun, Mar 8 - Sun, Mar 15
United Airlines Logo
7:41 am - 9:20 am
STL
-
CPH
18h 39m2 stops
United Airlines Logo
10:05 am - 3:29 pm
CPH
-
STL
59h 24m2 stops
$584United Airlines
Fri, Mar 6 - Sun, Mar 15
Lufthansa Logo
3:30 pm - 11:40 am
STL
-
CPH
13h 10m1 stop
Lufthansa Logo
12:25 pm - 1:25 pm
CPH
-
STL
32h 00m1 stop
$599Lufthansa
Wed, Apr 15 - Tue, Apr 21
Lufthansa Logo
3:30 pm - 11:40 am
STL
-
CPH
13h 10m1 stop
Lufthansa Logo
12:25 pm - 1:25 pm
CPH
-
STL
32h 00m1 stop
$602Lufthansa
Wed, Apr 1 - Tue, Apr 7
Lufthansa Logo
4:50 pm - 11:45 am
STL
-
CPH
12h 55m1 stop
Lufthansa Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m1 stop
$618Lufthansa
Sun, Mar 8 - Sun, Mar 15
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m1 stop
$646Multiple Airlines
Sat, Mar 7 - Sun, Mar 15

United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets
United Airlines
Apr 15
STL9:10 amLambert-St Louis
24h 15m
2 stops
CPH4:25 pmKastrup Copenhagen
Apr 21
CPH12:45 pmKastrup Copenhagen
39h 23m
2 stops
STL9:08 pmLambert-St Louis
$530
Find similar
United Airlines
Apr 1
STL10:00 amLambert-St Louis
24h 20m
2 stops
CPH5:20 pmKastrup Copenhagen
Apr 7
CPH12:45 pmKastrup Copenhagen
40h 43m
2 stops
STL10:28 pmLambert-St Louis
$531
Find similar
United Airlines
Mar 6
STL7:41 amLambert-St Louis
18h 39m
2 stops
CPH9:20 amKastrup Copenhagen
Mar 15
CPH10:05 amKastrup Copenhagen
59h 24m
2 stops
STL3:29 pmLambert-St Louis
$584
Find similar

Delta flights from St. Louis to Denmark

Our best Delta deals on St. Louis to Denmark flight tickets
Delta
Feb 9
STL11:23 amLambert-St Louis
18h 47m
2 stops
CPH1:10 pmKastrup Copenhagen
Feb 16
CPH9:55 amKastrup Copenhagen
20h 28m
2 stops
STL11:23 pmLambert-St Louis
$546
Find similar
Delta
May 24
STL6:30 amLambert-St Louis
22h 15m
1 stop
CPH11:45 amKastrup Copenhagen
Jun 11
CPH9:00 amKastrup Copenhagen
14h 40m
1 stop
STL4:40 pmLambert-St Louis
$805
Find similar
Delta
May 24
STL6:30 amLambert-St Louis
22h 15m
1 stop
CPH11:45 amKastrup Copenhagen
Jun 8
CPH9:00 amKastrup Copenhagen
18h 49m
2 stops
STL8:49 pmLambert-St Louis
$809
Find similar

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 December 27, 2025.
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

Wed 4/15

9:10 am-4:25 pm

2 stops24h 15m

Kastrup Copenhagen

Tue 4/21

12:45 pm-9:08 pm

2 stops39h 23m

$530

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/1

10:00 am-5:20 pm

2 stops24h 20m

Kastrup Copenhagen

Tue 4/7

12:45 pm-10:28 pm

2 stops40h 43m

$531

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 2/9

11:23 am-1:10 pm

2 stops18h 47m

Kastrup Copenhagen

Mon 2/16

9:55 am-11:23 pm

2 stops20h 28m

$546

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

10:05 am-3:29 pm

2 stops35h 24m

$554

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/8

4:50 pm-1:35 pm

1 stop14h 45m

Kastrup Copenhagen

Sun 3/15

12:45 pm-3:29 pm

2 stops32h 44m

$558

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 3/6

7:41 am-9:20 am

2 stops18h 39m

Kastrup Copenhagen

Sun 3/15

10:05 am-3:29 pm

2 stops59h 24m

$584

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/15

3:30 pm-11:40 am

1 stop13h 10m

Kastrup Copenhagen

Tue 4/21

12:25 pm-1:25 pm

1 stop32h 00m

$599

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/1

3:30 pm-11:40 am

1 stop13h 10m

Kastrup Copenhagen

Tue 4/7

12:25 pm-1:25 pm

1 stop32h 00m

$602

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 3/8

4:50 pm-11:45 am

1 stop12h 55m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$618

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$646

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 $668.

What is the cheapest day to depart on your flight to Denmark?

The cheapest day to depart from St. Louis to Denmark is on a Tuesday. Travelers who choose to depart for Denmark on a Tuesday will often find tickets for as low as $727. On the other hand, Thursday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,340.

What is the cheapest time of day to depart on your flight to Denmark?

Flying to Denmark from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $839 when looking at flights departing in the morning. At noon is when there is more demand to fly to Denmark, so prices are often more expensive at around $1,047 per ticket.

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 $819 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 $743 on momondo.

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

You could potentially save up to 25% 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
7,614 reviews
Search British Airways flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,434 reviews
Search KLM flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,019 reviews
Search Delta flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.4
1,627 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,653 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,066 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.

An easier way to manage your Denmark trip

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