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Cheap flights from St. Louis to Denmark from $535

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Denmark departing on 1/30. 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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Find the cheapest flights from St. Louis to Denmark

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
6:40 pm - 5:35 pmSTL-CPH
15h 55m2 stops
Lufthansa Logo
6:50 am - 7:27 pmCPH-STL
19h 37m2 stops
$535Lufthansa
Find Deal
Fri, Jan 30 - Tue, Feb 3
Lufthansa Logo
3:50 pm - 12:00 pmSTL-CPH
13h 10m1 stop
Lufthansa Logo
6:50 am - 7:27 pmCPH-STL
19h 37m2 stops
$547Lufthansa
Find Deal
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
9:57 am - 11:25 amSTL-CPH
18h 28m2 stops
United Airlines Logo
10:10 am - 3:29 pmCPH-STL
36h 19m2 stops
$548United Airlines
Find Deal
Fri, Feb 6 - Tue, Feb 10
Delta Logo
9:59 am - 5:00 pmSTL-CPH
24h 01m2 stops
Delta Logo
6:00 am - 4:37 pmCPH-STL
17h 37m2 stops
$551Delta
Find Deal
Fri, Feb 6 - Tue, Feb 10
Scandinavian Airlines Logo
1:00 pm - 10:15 amSTL-CPH
14h 15m1 stop
Scandinavian Airlines Logo
1:35 pm - 11:38 pmCPH-STL
17h 03m1 stop
$616Scandinavian Airlines
Find Deal
Tue, Apr 7 - Tue, Apr 14
Air Canada Logo
4:05 pm - 10:50 amSTL-CPH
11h 45m1 stop
Air Canada Logo
12:25 pm - 12:25 pmCPH-STL
31h 00m2 stops
$663Air Canada
Find Deal
Tue, Apr 7 - Fri, Apr 10
Air Canada Logo
7:45 am - 10:50 amSTL-CPH
20h 05m2 stops
Air Canada Logo
12:25 pm - 2:27 pmCPH-STL
33h 02m2 stops
$667Air Canada
Find Deal
Tue, Apr 7 - Fri, Apr 10
Air Canada Logo
4:05 pm - 10:50 amSTL-CPH
11h 45m1 stop
Air Canada Logo
12:25 pm - 3:24 pmCPH-STL
33h 59m1 stop
$668Air Canada
Find Deal
Mon, Apr 13 - Fri, Apr 17
United Airlines Logo
4:05 pm - 10:50 amSTL-CPH
11h 45m1 stop
United Airlines Logo
6:30 am - 1:30 pmCPH-STL
14h 00m1 stop
$675United Airlines
Find Deal
Tue, Apr 7 - Fri, Apr 10
Delta Logo
5:30 pm - 7:55 pmSTL-CPH
19h 25m2 stops
Delta Logo
9:00 am - 7:12 pmCPH-STL
17h 12m2 stops
$678Delta
Find Deal
Tue, Apr 7 - Tue, Apr 14

Lufthansa flights from St. Louis to Denmark

Our best Lufthansa deals on St. Louis to Denmark flight tickets
Lufthansa
Jan 30
STL6:40 pmLambert-St Louis
15h 55m
2 stops
CPH5:35 pmKastrup Copenhagen
Feb 3
CPH6:50 amKastrup Copenhagen
19h 37m
2 stops
STL7:27 pmLambert-St Louis
$535
Find similar
Lufthansa
Jan 30
STL3:50 pmLambert-St Louis
13h 10m
1 stop
CPH12:00 pmKastrup Copenhagen
Feb 3
CPH6:50 amKastrup Copenhagen
19h 37m
2 stops
STL7:27 pmLambert-St Louis
$547
Find similar
Lufthansa
Apr 8
STL3:30 pmLambert-St Louis
15h 25m
1 stop
CPH1:55 pmKastrup Copenhagen
Apr 13
CPH5:10 pmKastrup Copenhagen
34h 53m
2 stops
STL9:03 pmLambert-St Louis
$716
Find similar

United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets
United Airlines
Feb 6
STL9:57 amLambert-St Louis
18h 28m
2 stops
CPH11:25 amKastrup Copenhagen
Feb 10
CPH10:10 amKastrup Copenhagen
36h 19m
2 stops
STL3:29 pmLambert-St Louis
$548
Find similar
United Airlines
Apr 7
STL4:05 pmLambert-St Louis
11h 45m
1 stop
CPH10:50 amKastrup Copenhagen
Apr 10
CPH6:30 amKastrup Copenhagen
14h 00m
1 stop
STL1:30 pmLambert-St Louis
$675
Find similar
United Airlines
Apr 5
STL10:00 amLambert-St Louis
23h 25m
2 stops
CPH4:25 pmKastrup Copenhagen
Apr 8
CPH6:40 amKastrup Copenhagen
13h 50m
1 stop
STL1:30 pmLambert-St Louis
$681
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 November 22, 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

Fri 1/30

6:40 pm-5:35 pm

2 stops15h 55m

Kastrup Copenhagen

Tue 2/3

6:50 am-7:27 pm

2 stops19h 37m

$535

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/30

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

Tue 2/3

6:50 am-7:27 pm

2 stops19h 37m

$547

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 2/6

9:57 am-11:25 am

2 stops18h 28m

Kastrup Copenhagen

Tue 2/10

10:10 am-3:29 pm

2 stops36h 19m

$548

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 2/6

9:59 am-5:00 pm

2 stops24h 01m

Kastrup Copenhagen

Tue 2/10

6:00 am-4:37 pm

2 stops17h 37m

$551

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/7

1:00 pm-10:15 am

1 stop14h 15m

Kastrup Copenhagen

Tue 4/14

1:35 pm-11:38 pm

1 stop17h 03m

$616

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/7

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Fri 4/10

12:25 pm-12:25 pm

2 stops31h 00m

$663

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/7

7:45 am-10:50 am

2 stops20h 05m

Kastrup Copenhagen

Fri 4/10

12:25 pm-2:27 pm

2 stops33h 02m

$667

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 4/13

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Fri 4/17

12:25 pm-3:24 pm

1 stop33h 59m

$668

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/7

4:05 pm-10:50 am

1 stop11h 45m

Kastrup Copenhagen

Fri 4/10

6:30 am-1:30 pm

1 stop14h 00m

$675

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 4/7

5:30 pm-7:55 pm

2 stops19h 25m

Kastrup Copenhagen

Tue 4/14

9:00 am-7:12 pm

2 stops17h 12m

$678

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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, January 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 $668. If you aren’t able to travel to Denmark during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $704.

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 $831 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 8% 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

Direct flights

None
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
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,034 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,419 reviews
Search KLM flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.4
1,584 reviews
Search Scandinavian Airlines flights
British AirwaysPriceFrom $655Free CancellationRating
6.7
7,534 reviews
Search British Airways flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,465 reviews
Search Air Canada flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,047 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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