Denmark

$410+ Cheap flights from St. Louis (STL) to Denmark

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CPH
Mar 6 — Mar 131
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Cheap flight deals from St. Louis to Denmark

Cheapest flights from St. Louis to Denmark
Explore the most affordable flight options available from St. Louis to Denmark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:00 pm
STL
-
CPH
2 stops16h 35m
United Airlines
Sun 3/156:50 am
CPH
-
STL
2 stops38h 39m
United Airlines
Deal found 2/3$554
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:41 am
STL
-
CPH
2 stops20h 44m
United Airlines
Sun 3/156:50 am
CPH
-
STL
2 stops38h 39m
United Airlines
Deal found 2/2$557
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:59 pm
STL
-
CPH
2 stops13h 11m
Delta
Fri 4/39:00 am
CPH
-
STL
1 stop34h 19m
Delta
Deal found 2/3$577
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/255:55 pm
STL
-
CPH
2 stops23h 10m
United Airlines
Tue 3/3112:45 pm
CPH
-
STL
2 stops34h 23m
United Airlines
Deal found 2/1$583
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/259:41 am
STL
-
CPH
2 stops21h 29m
Delta
Thu 4/29:00 am
CPH
-
STL
1 stop14h 31m
Delta
Deal found 2/3$586
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:59 pm
STL
-
CPH
2 stops13h 11m
Delta
Tue 3/319:25 am
CPH
-
STL
2 stops18h 17m
Delta
Deal found 2/3$588
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 pm
STL
-
CPH
2 stops16h 35m
United Airlines
Wed 4/112:45 pm
CPH
-
STL
1 stop33h 39m
United Airlines
Deal found 2/3$591
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/251:34 pm
STL
-
CPH
2 stops17h 36m
Delta
Wed 4/16:00 am
CPH
-
STL
2 stops17h 16m
Delta
Deal found 2/3$595
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:59 pm
STL
-
CPH
2 stops13h 11m
Delta
Mon 3/309:00 am
CPH
-
STL
1 stop14h 31m
Delta
Deal found 2/3$597
This Air Canada deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:05 pm
STL
-
CPH
2 stops14h 20m
Air Canada
Tue 3/3112:45 pm
CPH
-
STL
1 stop33h 39m
Air Canada
Deal found 2/1$600
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:50 pm
STL
-
CPH
1 stop19h 15m
United Airlines
Fri 4/36:30 am
CPH
-
STL
1 stop13h 55m
United Airlines
Deal found 2/3$603
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/254:50 pm
STL
-
CPH
1 stop12h 55m
United Airlines
Wed 4/112:45 pm
CPH
-
STL
1 stop33h 39m
United Airlines
Deal found 2/3$604

Find flight deals from St. Louis to Denmark

Keep the following information in mind while searching for St. Louis to Denmark flight deals. Data was last updated February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$554
(United Airlines)

One-way from

$410
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$651
Provider with most accurate pricing for Lambert-St Louis-Kastrup Copenhagen flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Kastrup Copenhagen flights.
From Lambert-St Louis to Denmark
One-way flight from Lambert-St Louis to Denmark
Highest demand for flights based on searches. 14% potential increase in price ($133 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in February 2026

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from St. Louis to Denmark that are best for you.

Fly from

St. Louis

Fly to

Denmark

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 3/6

7:41 am-11:25 am

2 stops20h 44m

Kastrup Copenhagen

Sun 3/15

6:50 am-3:29 pm

2 stops38h 39m

$557

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 3/24

5:59 pm-1:10 pm

2 stops13h 11m

Kastrup Copenhagen

Fri 4/3

9:00 am-12:19 pm

1 stop34h 19m

$577

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/25

5:55 pm-11:05 pm

2 stops23h 10m

Kastrup Copenhagen

Tue 3/31

12:45 pm-4:08 pm

2 stops34h 23m

$583

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 3/24

5:59 pm-1:10 pm

2 stops13h 11m

Kastrup Copenhagen

Thu 4/2

6:00 am-4:32 pm

2 stops17h 32m

$586

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 3/24

5:59 pm-1:10 pm

2 stops13h 11m

Kastrup Copenhagen

Tue 3/31

9:25 am-8:42 pm

2 stops18h 17m

$588

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/25

1:34 pm-1:10 pm

2 stops17h 36m

Kastrup Copenhagen

Tue 3/31

9:00 am-9:06 pm

2 stops19h 06m

$591

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 3/24

5:59 pm-1:10 pm

2 stops13h 11m

Kastrup Copenhagen

Mon 3/30

9:00 am-4:31 pm

1 stop14h 31m

$597

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/25

4:05 pm-12:25 pm

2 stops14h 20m

Kastrup Copenhagen

Tue 3/31

12:45 pm-3:24 pm

1 stop33h 39m

$600

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/25

4:50 pm-6:05 pm

1 stop19h 15m

Kastrup Copenhagen

Fri 4/3

6:30 am-1:25 pm

1 stop13h 55m

$603

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 3/25

4:50 pm-11:45 am

1 stop12h 55m

Kastrup Copenhagen

Tue 3/31

12:45 pm-3:24 pm

1 stop33h 39m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 19 results
1
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Best time to book a flight from St. Louis to Denmark

Have a flexible travel schedule? Discover the best time to fly to Denmark from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Denmark

What is the cheapest month to book a flight from St. Louis to Denmark?

Currently, February is the cheapest month in which you can book a flight from St. Louis to Denmark (average of $536). Flying from St. Louis to Denmark in June is currently the most expensive (average of $856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Denmark

Get insights into the airlines that provide service to Denmark. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denmark. Reviews last updated February 4, 2026.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Denmark to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.9

Overall

7.9

Entertainment

7.8

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Denmark. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from St. Louis to Denmark?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Denmark.

  • How long is the flight from St. Louis to Denmark?

    For as low as $577, United Airlines can have you in Denmark from St. Louis in 13h 11m. The distance from St. Louis to Denmark is about 4511 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from St. Louis to Denmark that include hotel bookings?

    Yes. In addition to deals on St. Louis to Denmark flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Denmark?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Denmark.

  • Can I find deals for business class flights from St. Louis to Denmark?

    Yes. Cheapflights offers flight deals from St. Louis to Denmark by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Denmark?

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Denmark (average of $536). Flying from St. Louis to Denmark in June is currently the most expensive (average of $856). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Denmark

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from St. Louis to Denmark

Discover the top 8 airlines that operate flights from St. Louis to Denmark. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$523Average$837FlexibilityNo cancel feeOn-time70%
DeltaCheapest$593Average$785FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$598Average$818FlexibilityNo cancel feeOn-time69%
KLMCheapest$625Average$746FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$659Average$950FlexibilityNo cancel feeOn-time67%
Scandinavian AirlinesCheapest$661Average$938FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$662Average$800FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$684Average$1,008FlexibilityNo cancel feeOn-time71%

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