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Cheap flights from St. Louis to Denmark from $340

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 8/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Denmark

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
1:30 pm - 10:00 pm
STL
-
CPH
25h 30m
2 stops
Virgin Atlantic Logo
9:00 am - 11:39 pm
CPH
-
STL
21h 39m
2 stops
$419Virgin Atlantic
Thu, Oct 8 - Thu, Oct 15
Air Canada Logo
4:05 pm - 12:00 pm
STL
-
CPH
36h 55m
2 stops
Air Canada Logo
11:35 am - 12:06 pm
CPH
-
STL
31h 31m
2 stops
$781Air Canada
Sun, Nov 1 - Wed, Nov 4
United Airlines Logo
4:15 pm - 1:30 pm
STL
-
CPH
38h 15m
2 stops
United Airlines Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$793United Airlines
Sun, Nov 1 - Wed, Nov 4
Multiple Airlines Logo
7:04 pm - 5:35 pm
STL
-
CPH
15h 31m
2 stops
Multiple Airlines Logo
11:35 am - 12:06 pm
CPH
-
STL
31h 31m
2 stops
$808Multiple Airlines
Mon, Nov 9 - Wed, Nov 18
Multiple Airlines Logo
7:04 pm - 11:05 pm
STL
-
CPH
21h 01m
2 stops
Multiple Airlines Logo
11:35 am - 12:06 pm
CPH
-
STL
31h 31m
2 stops
$809Multiple Airlines
Mon, Nov 9 - Wed, Nov 18
Lufthansa Logo
7:04 pm - 11:05 pm
STL
-
CPH
21h 01m
2 stops
Lufthansa Logo
7:10 am - 1:45 pm
CPH
-
STL
13h 35m
1 stop
$813Lufthansa
Mon, Nov 9 - Wed, Nov 18
United Airlines Logo
1:08 pm - 11:25 am
STL
-
CPH
15h 17m
2 stops
United Airlines Logo
11:35 am - 12:06 pm
CPH
-
STL
31h 31m
2 stops
$814United Airlines
Mon, Nov 9 - Wed, Nov 18
Multiple Airlines Logo
5:34 pm - 11:45 am
STL
-
CPH
11h 11m
1 stop
Multiple Airlines Logo
8:50 am - 8:26 pm
CPH
-
STL
18h 36m
2 stops
$835Multiple Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
8:00 am - 8:55 am
STL
-
CPH
17h 55m
2 stops
Multiple Airlines Logo
8:50 am - 8:26 pm
CPH
-
STL
18h 36m
2 stops
$839Multiple Airlines
Sun, Aug 16 - Sat, Aug 29
Multiple Airlines Logo
6:54 pm - 4:25 pm
STL
-
CPH
14h 31m
2 stops
Multiple Airlines Logo
3:20 pm - 11:34 pm
CPH
-
STL
15h 14m
1 stop
$849Multiple Airlines
Sun, Aug 16 - Sat, Aug 29

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United Airlines flights from St. Louis to Denmark

Our best United Airlines deals on St. Louis to Denmark flight tickets
United Airlines
Nov 1
STL4:15 pmLambert-St Louis
38h 15m
2 stops
CPH1:30 pmKastrup Copenhagen
Nov 4
CPH7:10 amKastrup Copenhagen
13h 35m
1 stop
STL1:45 pmLambert-St Louis
$793
United Airlines
Nov 9
STL1:08 pmLambert-St Louis
15h 17m
2 stops
CPH11:25 amKastrup Copenhagen
Nov 18
CPH11:35 amKastrup Copenhagen
31h 31m
2 stops
STL12:06 pmLambert-St Louis
$814
United Airlines
Aug 17
STL7:00 amLambert-St Louis
42h 55m
3 stops
CPH8:55 amKastrup Copenhagen
Aug 24
CPH10:30 amKastrup Copenhagen
33h 55m
1 stop
STL1:25 pmLambert-St Louis
$876

Air Canada flights from St. Louis to Denmark

Our best Air Canada deals on St. Louis to Denmark flight tickets
Air Canada
Nov 1
STL4:05 pmLambert-St Louis
36h 55m
2 stops
CPH12:00 pmKastrup Copenhagen
Nov 4
CPH11:35 amKastrup Copenhagen
31h 31m
2 stops
STL12:06 pmLambert-St Louis
$781
Air Canada
Aug 6
STL12:10 pmLambert-St Louis
13h 45m
1 stop
CPH8:55 amKastrup Copenhagen
Aug 22
CPH12:15 pmKastrup Copenhagen
34h 23m
2 stops
STL3:38 pmLambert-St Louis
$935
Air Canada
Aug 6
STL7:20 amLambert-St Louis
18h 35m
2 stops
CPH8:55 amKastrup Copenhagen
Aug 22
CPH12:15 pmKastrup Copenhagen
34h 23m
2 stops
STL3:38 pmLambert-St Louis
$940

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 June 28, 2026.
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

Cheapest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Thu 10/8

1:30 pm-10:00 pm

2 stops25h 30m

Kastrup Copenhagen

Thu 10/15

9:00 am-11:39 pm

2 stops21h 39m

$419

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 11/1

4:05 pm-12:00 pm

2 stops36h 55m

Kastrup Copenhagen

Wed 11/4

11:35 am-12:06 pm

2 stops31h 31m

$781

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 11/1

4:15 pm-1:30 pm

2 stops38h 15m

Kastrup Copenhagen

Wed 11/4

7:10 am-1:45 pm

1 stop13h 35m

$793

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/9

7:04 pm-5:35 pm

2 stops15h 31m

Kastrup Copenhagen

Wed 11/18

11:35 am-12:06 pm

2 stops31h 31m

$808

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/9

7:04 pm-11:05 pm

2 stops21h 01m

Kastrup Copenhagen

Wed 11/18

11:35 am-12:06 pm

2 stops31h 31m

$809

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/9

7:04 pm-11:05 pm

2 stops21h 01m

Kastrup Copenhagen

Wed 11/18

7:10 am-1:45 pm

1 stop13h 35m

$813

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 11/9

1:08 pm-11:25 am

2 stops15h 17m

Kastrup Copenhagen

Wed 11/18

11:35 am-12:06 pm

2 stops31h 31m

$814

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 8/16

5:34 pm-11:45 am

1 stop11h 11m

Kastrup Copenhagen

Sat 8/29

8:50 am-8:26 pm

2 stops18h 36m

$835

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 8/16

8:00 am-8:55 am

2 stops17h 55m

Kastrup Copenhagen

Sat 8/29

8:50 am-8:26 pm

2 stops18h 36m

$839
Quickest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sun 8/16

6:54 pm-4:25 pm

2 stops14h 31m

Kastrup Copenhagen

Sat 8/29

3:20 pm-11:34 pm

1 stop15h 14m

$849

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, September 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 $250. If you aren’t able to travel to Denmark during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $523.

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

You could potentially save up to 27% 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 45m

Direct flights

None
The fastest flight from St. Louis to Denmark takes 12h 45m
There are no direct flights from St. Louis to Denmark. There are no popular flight routes from St. Louis to Denmark.
Search flight deals

Frequently asked questions about flying from St. Louis to Denmark

  • 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 $592Free CancellationRating
7.4
9,896 reviews
Search United Airlines flights
DeltaPriceFrom $643Free CancellationRating
7.8
8,450 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $655Free CancellationRating
7.4
1,860 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $684Free CancellationRating
7.1
11,772 reviews
Search American Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
8,108 reviews
Search Lufthansa flights
Air CanadaPriceFrom $734Free CancellationRating
7.1
11,270 reviews
Search Air Canada 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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