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Cheap flights from St. Louis to Denmark from $324

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 9/29. 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

Scandinavian Airlines Logo
4:00 pm - 10:40 amSTL-CPH
11h 40m1 stop
Scandinavian Airlines Logo
1:15 pm - 11:40 pmCPH-STL
17h 25m1 stop
$563Scandinavian Airlines
Find Deal
seg, jan 12 - sáb, jan 17
Delta Logo
6:40 am - 6:30 amSTL-CPH
16h 50m2 stops
Delta Logo
9:00 am - 4:43 pmCPH-STL
14h 43m1 stop
$616Delta
Find Deal
qua, out 15 - qua, out 22
Lufthansa Logo
6:42 pm - 5:35 pmSTL-CPH
15h 53m2 stops
Lufthansa Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
$641Lufthansa
Find Deal
ter, dez 2 - dom, dez 7
Lufthansa Logo
3:50 pm - 12:00 pmSTL-CPH
13h 10m1 stop
Lufthansa Logo
6:50 am - 2:55 pmCPH-STL
14h 05m1 stop
$650Lufthansa
Find Deal
sex, mar 6 - sex, mar 13
United Airlines Logo
3:50 pm - 12:00 pmSTL-CPH
13h 10m1 stop
United Airlines Logo
6:50 am - 2:55 pmCPH-STL
14h 05m1 stop
$654United Airlines
Find Deal
sex, mar 6 - sex, mar 13
United Airlines Logo
1:35 pm - 12:00 pmSTL-CPH
16h 25m2 stops
United Airlines Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
$656United Airlines
Find Deal
sex, out 31 - sex, nov 7
Air Canada Logo
4:05 pm - 1:45 pmSTL-CPH
14h 40m2 stops
Air Canada Logo
2:30 pm - 3:29 pmCPH-STL
30h 59m2 stops
$667Air Canada
Find Deal
sex, mar 6 - sex, mar 13
KLM Logo
5:31 pm - 9:55 amSTL-CPH
33h 24m1 stop
KLM Logo
12:30 pm - 11:07 pmCPH-STL
17h 37m1 stop
$668KLM
Find Deal
qua, out 15 - qua, out 22
KLM Logo
5:32 pm - 2:00 pmSTL-CPH
13h 28m2 stops
KLM Logo
9:00 am - 4:43 pmCPH-STL
14h 43m1 stop
$696KLM
Find Deal
qua, out 1 - ter, out 14
Air Canada Logo
4:05 pm - 2:00 pmSTL-CPH
15h 55m2 stops
Air Canada Logo
6:50 am - 3:29 pmCPH-STL
38h 39m2 stops
$709Air Canada
Find Deal
dom, mar 8 - sex, mar 13

United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets
United Airlines
Mar 6
STL3:50 pmLambert-St Louis
13h 10m
1 stop
CPH12:00 pmKastrup Copenhagen
Mar 13
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL2:55 pmLambert-St Louis
$654
Find similar
United Airlines
Oct 31
STL1:35 pmLambert-St Louis
16h 25m
2 stops
CPH12:00 pmKastrup Copenhagen
Nov 7
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$656
Find similar
United Airlines
Oct 31
STL4:50 pmLambert-St Louis
14h 55m
1 stop
CPH1:45 pmKastrup Copenhagen
Nov 7
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$657
Find similar

Scandinavian Airlines flights from St. Louis to Denmark

Our best Scandinavian Airlines deals on St. Louis to Denmark flight tickets
Scandinavian Airlines
Jan 12
STL4:00 pmLambert-St Louis
11h 40m
1 stop
CPH10:40 amKastrup Copenhagen
Jan 17
CPH1:15 pmKastrup Copenhagen
17h 25m
1 stop
STL11:40 pmLambert-St Louis
$563
Find similar
Scandinavian Airlines
Dec 1
STL1:55 pmLambert-St Louis
13h 45m
1 stop
CPH10:40 amKastrup Copenhagen
Dec 7
CPH1:15 pmKastrup Copenhagen
17h 26m
1 stop
STL11:41 pmLambert-St Louis
$682
Find similar
Scandinavian Airlines
Oct 30
STL3:59 pmLambert-St Louis
12h 41m
1 stop
CPH10:40 amKastrup Copenhagen
Nov 6
CPH1:15 pmKastrup Copenhagen
15h 23m
1 stop
STL9:38 pmLambert-St Louis
$902
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 setembro 17, 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

seg 1/12

4:00 pm-10:40 am

1 stop11h 40m

Kastrup Copenhagen

sáb 1/17

1:15 pm-11:40 pm

1 stop17h 25m

$563

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

qua 10/15

6:40 am-6:30 am

2 stops16h 50m

Kastrup Copenhagen

qua 10/22

9:00 am-4:43 pm

1 stop14h 43m

$616

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

ter 12/2

6:42 pm-5:35 pm

2 stops15h 53m

Kastrup Copenhagen

dom 12/7

6:50 am-1:55 pm

1 stop14h 05m

$641

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

sex 3/6

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

sex 3/13

6:50 am-2:55 pm

1 stop14h 05m

$650

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

sex 3/6

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

sex 3/13

6:50 am-2:55 pm

1 stop14h 05m

$654

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

sex 10/31

1:35 pm-12:00 pm

2 stops16h 25m

Kastrup Copenhagen

sex 11/7

6:50 am-1:55 pm

1 stop14h 05m

$656

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

sex 3/6

4:05 pm-1:45 pm

2 stops14h 40m

Kastrup Copenhagen

sex 3/13

2:30 pm-3:29 pm

2 stops30h 59m

$667

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

qua 10/15

5:31 pm-9:55 am

1 stop33h 24m

Kastrup Copenhagen

qua 10/22

12:30 pm-11:07 pm

1 stop17h 37m

$668

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

qua 10/1

5:32 pm-2:00 pm

2 stops13h 28m

Kastrup Copenhagen

ter 10/14

9:00 am-4:43 pm

1 stop14h 43m

$696

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

dom 3/8

4:05 pm-2:00 pm

2 stops15h 55m

Kastrup Copenhagen

sex 3/13

6:50 am-3:29 pm

2 stops38h 39m

$709

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 $659. 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 $683.

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 $867 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 $749 on momondo.

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
DeltaPriceFrom $609Free CancellationRating
7.9
7,961 reviews
Search Delta flights
KLMPriceFrom $625Free CancellationRating
7.8
1,386 reviews
Search KLM flights
United AirlinesPriceFrom $653Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
British AirwaysPriceFrom $663Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
LufthansaPriceFrom $709Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
10,000 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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