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Cheap flights from St. Louis to Denmark from $676

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 10/14. 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

KLM Logo
12:14 pm - 9:55 amSTL-CPH
14h 41m1 stop
KLM Logo
9:00 am - 4:43 pmCPH-STL
14h 43m1 stop
$676KLM
Find Deal
Tue, Oct 14 - Tue, Oct 21
Delta Logo
3:30 pm - 9:55 amSTL-CPH
11h 25m1 stop
Delta Logo
9:00 am - 8:23 pmCPH-STL
18h 23m2 stops
$680Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
1:48 pm - 12:15 pmSTL-CPH
15h 27m2 stops
American Airlines Logo
12:25 pm - 9:48 pmCPH-STL
16h 23m2 stops
$682American Airlines
Find Deal
Fri, Jan 16 - Thu, May 14
Air Canada Logo
1:30 pm - 7:30 amSTL-CPH
11h 00m1 stop
Air Canada Logo
6:10 am - 7:57 pmCPH-STL
20h 47m2 stops
$699Air Canada
Find Deal
Tue, Sep 16 - Sat, Sep 20
Air Canada Logo
9:15 am - 7:30 amSTL-CPH
15h 15m2 stops
Air Canada Logo
6:10 am - 7:57 pmCPH-STL
20h 47m2 stops
$700Air Canada
Find Deal
Tue, Sep 16 - Sat, Sep 20
United Airlines Logo
3:50 pm - 6:15 pmSTL-CPH
19h 25m1 stop
United Airlines Logo
12:25 pm - 2:18 pmCPH-STL
32h 53m2 stops
$714United Airlines
Find Deal
Fri, Jan 16 - Thu, May 14
Air Canada Logo
12:25 pm - 10:50 amSTL-CPH
39h 25m2 stops
Air Canada Logo
12:35 pm - 3:44 pmCPH-STL
34h 09m2 stops
$716Air Canada
Find Deal
Thu, Oct 16 - Thu, Oct 23
Scandinavian Airlines Logo
1:30 pm - 10:40 amSTL-CPH
14h 10m1 stop
Scandinavian Airlines Logo
1:15 pm - 10:04 pmCPH-STL
15h 49m1 stop
$723Scandinavian Airlines
Find Deal
Mon, Nov 3 - Sat, Nov 8
United Airlines Logo
3:50 pm - 12:00 pmSTL-CPH
13h 10m1 stop
United Airlines Logo
12:25 pm - 8:15 pmCPH-STL
14h 50m1 stop
$727United Airlines
Find Deal
Fri, Jan 16 - Thu, May 14
Scandinavian Airlines Logo
11:44 am - 10:40 amSTL-CPH
15h 56m1 stop
Scandinavian Airlines Logo
1:15 pm - 9:04 pmCPH-STL
14h 49m1 stop
$8,425Scandinavian Airlines
Find Deal
Thu, Nov 20 - Sun, Nov 30

KLM flights from St. Louis to Denmark

Our best KLM deals on St. Louis to Denmark flight tickets
KLM
Oct 14
STL12:14 pmLambert-St Louis
14h 41m
1 stop
CPH9:55 amKastrup Copenhagen
Oct 21
CPH9:00 amKastrup Copenhagen
14h 43m
1 stop
STL4:43 pmLambert-St Louis
$676
Find similar
KLM
Oct 16
STL12:14 pmLambert-St Louis
14h 41m
1 stop
CPH9:55 amKastrup Copenhagen
Oct 23
CPH9:00 amKastrup Copenhagen
14h 43m
1 stop
STL4:43 pmLambert-St Louis
$726
Find similar
KLM
Oct 15
STL5:31 pmLambert-St Louis
33h 24m
1 stop
CPH9:55 amKastrup Copenhagen
Oct 22
CPH12:30 pmKastrup Copenhagen
17h 37m
1 stop
STL11:07 pmLambert-St Louis
$733
Find similar

Delta flights from St. Louis to Denmark

Our best Delta deals on St. Louis to Denmark flight tickets
Delta
Oct 14
STL3:30 pmLambert-St Louis
11h 25m
1 stop
CPH9:55 amKastrup Copenhagen
Oct 21
CPH9:00 amKastrup Copenhagen
18h 23m
2 stops
STL8:23 pmLambert-St Louis
$680
Find similar
Delta
Oct 16
STL6:40 amLambert-St Louis
16h 50m
2 stops
CPH6:30 amKastrup Copenhagen
Oct 23
CPH9:00 amKastrup Copenhagen
14h 43m
1 stop
STL4:43 pmLambert-St Louis
$730
Find similar
Delta
Sep 8
STL6:40 amLambert-St Louis
16h 50m
2 stops
CPH6:30 amKastrup Copenhagen
Sep 13
CPH9:00 amKastrup Copenhagen
19h 50m
2 stops
STL9:50 pmLambert-St Louis
$740
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 September 2, 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

Tue 10/14

12:14 pm-9:55 am

1 stop14h 41m

Kastrup Copenhagen

Tue 10/21

9:00 am-4:43 pm

1 stop14h 43m

$676

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 10/14

3:30 pm-9:55 am

1 stop11h 25m

Kastrup Copenhagen

Tue 10/21

9:00 am-8:23 pm

2 stops18h 23m

$680

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/16

1:48 pm-12:15 pm

2 stops15h 27m

Kastrup Copenhagen

Thu 5/14

12:25 pm-9:48 pm

2 stops16h 23m

$682

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 9/16

1:30 pm-7:30 am

1 stop11h 00m

Kastrup Copenhagen

Sat 9/20

6:10 am-7:57 pm

2 stops20h 47m

$699

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 9/16

9:15 am-7:30 am

2 stops15h 15m

Kastrup Copenhagen

Sat 9/20

6:10 am-7:57 pm

2 stops20h 47m

$700

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/16

3:50 pm-6:15 pm

1 stop19h 25m

Kastrup Copenhagen

Thu 5/14

12:25 pm-2:18 pm

2 stops32h 53m

$714

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 10/16

12:25 pm-10:50 am

2 stops39h 25m

Kastrup Copenhagen

Thu 10/23

12:35 pm-3:44 pm

2 stops34h 09m

$716

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/3

1:30 pm-10:40 am

1 stop14h 10m

Kastrup Copenhagen

Sat 11/8

1:15 pm-10:04 pm

1 stop15h 49m

$723

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/16

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

Thu 5/14

12:25 pm-8:15 pm

1 stop14h 50m

$727

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 11/20

11:44 am-10:40 am

1 stop15h 56m

Kastrup Copenhagen

Sun 11/30

1:15 pm-9:04 pm

1 stop14h 49m

$8,425

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 $863 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 $593Free CancellationRating
7.9
7,973 reviews
Search Delta flights
KLMPriceFrom $625Free CancellationRating
7.8
1,382 reviews
Search KLM flights
LufthansaPriceFrom $626Free CancellationRating
6.8
7,385 reviews
Search Lufthansa flights
United AirlinesPriceFrom $654Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.4
1,480 reviews
Search Scandinavian Airlines flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
British AirwaysPriceFrom $663Free CancellationRating
6.7
7,344 reviews
Search British Airways flights
American AirlinesPriceFrom $821Free 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.

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