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Cheap flights from St. Louis to Denmark from $427

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 9/16. 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
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.
Multiple Airlines Logo
12:10 pm - 8:55 am
STL
-
CPH
13h 45m
1 stop
Multiple Airlines Logo
8:50 am - 7:46 pm
CPH
-
STL
17h 56m
2 stops
$776Multiple Airlines
Tue, Sep 1 - Wed, Sep 30
British Airways Logo
8:02 pm - 11:10 pm
STL
-
CPH
20h 08m
2 stops
British Airways Logo
8:50 am - 7:46 pm
CPH
-
STL
17h 56m
2 stops
$789British Airways
Tue, Sep 1 - Wed, Sep 30
United Airlines Logo
8:30 pm - 8:55 am
STL
-
CPH
29h 25m
2 stops
United Airlines Logo
12:45 pm - 12:13 pm
CPH
-
STL
30h 28m
2 stops
$830United Airlines
Mon, Aug 31 - Tue, Sep 15
Multiple Airlines Logo
12:10 pm - 8:55 am
STL
-
CPH
13h 45m
1 stop
Multiple Airlines Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m
1 stop
$836Multiple Airlines
Tue, Sep 1 - Wed, Sep 30
Lufthansa Logo
6:55 pm - 4:35 pm
STL
-
CPH
14h 40m
2 stops
Lufthansa Logo
6:45 pm - 1:25 pm
CPH
-
STL
25h 40m
1 stop
$843Lufthansa
Mon, Aug 17 - Mon, Aug 24
Air Canada Logo
6:55 pm - 8:55 am
STL
-
CPH
31h 00m
2 stops
Air Canada Logo
12:45 pm - 2:00 pm
CPH
-
STL
32h 15m
1 stop
$844Air Canada
Mon, Aug 31 - Tue, Sep 15
Multiple Airlines Logo
10:16 am - 1:10 pm
STL
-
CPH
19h 54m
2 stops
Multiple Airlines Logo
7:25 pm - 8:26 pm
CPH
-
STL
32h 01m
2 stops
$845Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
2:40 pm - 10:50 am
STL
-
CPH
13h 10m
1 stop
United Airlines Logo
12:35 pm - 1:25 pm
CPH
-
STL
31h 50m
1 stop
$846United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
8:30 pm - 8:55 am
STL
-
CPH
29h 25m
2 stops
United Airlines Logo
12:35 pm - 6:42 pm
CPH
-
STL
37h 07m
2 stops
$849United Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
1:13 pm - 6:15 pm
STL
-
CPH
22h 02m
2 stops
Multiple Airlines Logo
3:20 pm - 11:23 pm
CPH
-
STL
15h 03m
1 stop
$851Multiple Airlines
Wed, Aug 5 - Wed, Aug 12

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Lufthansa flights from St. Louis to Denmark

Our best Lufthansa deals on St. Louis to Denmark flight tickets
Lufthansa
Aug 17
STL6:55 pmLambert-St Louis
14h 40m
2 stops
CPH4:35 pmKastrup Copenhagen
Aug 24
CPH6:45 pmKastrup Copenhagen
25h 40m
1 stop
STL1:25 pmLambert-St Louis
$843
Lufthansa
Sep 14
STL6:55 pmLambert-St Louis
16h 45m
2 stops
CPH6:40 pmKastrup Copenhagen
Sep 21
CPH7:25 pmKastrup Copenhagen
25h 00m
2 stops
STL1:25 pmLambert-St Louis
$887

Air Canada flights from St. Louis to Denmark

Our best Air Canada deals on St. Louis to Denmark flight tickets
Air Canada
May 4
STL1:24 pmLambert-St Louis
14h 26m
2 stops
CPH10:50 amKastrup Copenhagen
May 19
CPH12:45 pmKastrup Copenhagen
14h 24m
1 stop
STL8:09 pmLambert-St Louis
$782
Air Canada
May 4
STL2:15 pmLambert-St Louis
13h 35m
1 stop
CPH10:50 amKastrup Copenhagen
May 19
CPH12:45 pmKastrup Copenhagen
14h 24m
1 stop
STL8:09 pmLambert-St Louis
$783
Air Canada
May 4
STL1:24 pmLambert-St Louis
14h 26m
2 stops
CPH10:50 amKastrup Copenhagen
May 19
CPH12:45 pmKastrup Copenhagen
17h 11m
2 stops
STL10:56 pmLambert-St Louis
$826

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 May 1, 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

Tue 9/1

12:10 pm-8:55 am

1 stop13h 45m

Kastrup Copenhagen

Wed 9/30

8:50 am-7:46 pm

2 stops17h 56m

$776

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 9/1

8:02 pm-11:10 pm

2 stops20h 08m

Kastrup Copenhagen

Wed 9/30

8:50 am-7:46 pm

2 stops17h 56m

$789

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/31

8:30 pm-8:55 am

2 stops29h 25m

Kastrup Copenhagen

Tue 9/15

12:45 pm-12:13 pm

2 stops30h 28m

$830
Quickest round-trip

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Tue 9/1

12:10 pm-8:55 am

1 stop13h 45m

Kastrup Copenhagen

Wed 9/30

6:20 am-1:25 pm

1 stop14h 05m

$836

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

6:55 pm-4:35 pm

2 stops14h 40m

Kastrup Copenhagen

Mon 8/24

6:45 pm-1:25 pm

1 stop25h 40m

$843

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/31

6:55 pm-8:55 am

2 stops31h 00m

Kastrup Copenhagen

Tue 9/15

12:45 pm-2:00 pm

1 stop32h 15m

$844

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

10:16 am-1:10 pm

2 stops19h 54m

Kastrup Copenhagen

Mon 8/24

7:25 pm-8:26 pm

2 stops32h 01m

$845

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

2:40 pm-10:50 am

1 stop13h 10m

Kastrup Copenhagen

Mon 8/24

12:35 pm-1:25 pm

1 stop31h 50m

$846

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 8/17

8:30 pm-8:55 am

2 stops29h 25m

Kastrup Copenhagen

Mon 8/24

12:35 pm-6:42 pm

2 stops37h 07m

$849

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 8/5

1:13 pm-6:15 pm

2 stops22h 02m

Kastrup Copenhagen

Wed 8/12

3:20 pm-11:23 pm

1 stop15h 03m

$851

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, April 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 $0. If you aren’t able to travel to Denmark during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $250.

How far in advance should I book a flight from St. Louis 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 $815 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 $711 on momondo.

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

You could potentially save up to 19% 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 50m

Direct flights

None
The fastest flight from St. Louis to Denmark takes 12h 50m
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
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,937 reviews
Search British Airways flights
United AirlinesPriceFrom $592Free CancellationRating
7.4
9,678 reviews
Search United Airlines flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,465 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.4
1,767 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $662Free CancellationRating
6.8
7,964 reviews
Search Lufthansa flights
American AirlinesPriceFrom $684Free CancellationRating
7.1
11,684 reviews
Search American Airlines flights
Air CanadaPriceFrom $734Free CancellationRating
7.1
10,983 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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