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Cheap flights from St. Louis to Copenhagen from $341

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 Copenhagen departing on 5/5. 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

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Find the cheapest flights from St. Louis to Copenhagen

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
6:44 pm - 7:05 pm
STL
-
CPH
17h 21m2 stops
British Airways Logo
1:00 pm - 10:59 pm
CPH
-
STL
40h 59m2 stops
$527British Airways
Mon, Jan 12 - Thu, Jan 22
Lufthansa Logo
3:50 pm - 12:00 pm
STL
-
CPH
13h 10m1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$539Lufthansa
Fri, Jan 9 - Fri, Jan 23
Delta Logo
11:23 am - 1:10 pm
STL
-
CPH
18h 47m2 stops
Delta Logo
2:15 pm - 11:37 pm
CPH
-
STL
16h 22m2 stops
$544Delta
Fri, Jan 9 - Fri, Jan 23
United Airlines Logo
11:20 am - 11:25 am
STL
-
CPH
17h 05m2 stops
United Airlines Logo
10:10 am - 3:15 pm
CPH
-
STL
36h 05m2 stops
$550United Airlines
Fri, Jan 30 - Tue, Feb 3
Lufthansa Logo
3:50 pm - 12:00 pm
STL
-
CPH
13h 10m1 stop
Lufthansa Logo
10:10 am - 7:27 pm
CPH
-
STL
16h 17m2 stops
$551Lufthansa
Fri, Jan 30 - Tue, Feb 3
Multiple Airlines Logo
1:33 pm - 2:20 pm
STL
-
CPH
17h 47m2 stops
Multiple Airlines Logo
6:55 am - 10:58 pm
CPH
-
STL
22h 03m2 stops
$555Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
3:50 pm - 1:45 pm
STL
-
CPH
14h 55m1 stop
United Airlines Logo
6:50 am - 9:13 pm
CPH
-
STL
21h 23m2 stops
$560United Airlines
Fri, Jan 30 - Tue, Feb 3
Lufthansa Logo
6:40 pm - 5:35 pm
STL
-
CPH
15h 55m2 stops
Lufthansa Logo
12:30 pm - 1:55 pm
CPH
-
STL
32h 25m1 stop
$563Lufthansa
Mon, Jan 12 - Thu, Jan 22
United Airlines Logo
4:05 pm - 1:35 pm
STL
-
CPH
38h 30m2 stops
United Airlines Logo
8:55 am - 3:29 pm
CPH
-
STL
36h 34m2 stops
$565United Airlines
Sat, Mar 7 - Sun, Mar 15
United Airlines Logo
7:41 am - 5:30 pm
STL
-
CPH
26h 49m2 stops
United Airlines Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m1 stop
$643United Airlines
Sat, Mar 7 - Sun, Mar 15

British Airways flights from St. Louis to Copenhagen

Our best British Airways deals on St. Louis to Copenhagen flight tickets
British Airways
Jan 12
STL6:44 pmLambert-St Louis
17h 21m
2 stops
CPH7:05 pmKastrup Copenhagen
Jan 22
CPH1:00 pmKastrup Copenhagen
40h 59m
2 stops
STL10:59 pmLambert-St Louis
$527
Find similar
British Airways
Apr 27
STL7:50 amLambert-St Louis
24h 45m
2 stops
CPH3:35 pmKastrup Copenhagen
May 11
CPH9:45 pmKastrup Copenhagen
31h 03m
2 stops
STL9:48 pmLambert-St Louis
$679
Find similar
British Airways
May 26
STL10:00 pmLambert-St Louis
14h 15m
1 stop
CPH7:15 pmKastrup Copenhagen
Jun 9
CPH9:45 pmKastrup Copenhagen
29h 17m
2 stops
STL8:02 pmLambert-St Louis
$772
Find similar

Lufthansa flights from St. Louis to Copenhagen

Our best Lufthansa deals on St. Louis to Copenhagen flight tickets
Lufthansa
Jan 9
STL3:50 pmLambert-St Louis
13h 10m
1 stop
CPH12:00 pmKastrup Copenhagen
Jan 23
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$539
Find similar
Lufthansa
Jan 30
STL3:50 pmLambert-St Louis
13h 10m
1 stop
CPH12:00 pmKastrup Copenhagen
Feb 3
CPH10:10 amKastrup Copenhagen
16h 17m
2 stops
STL7:27 pmLambert-St Louis
$551
Find similar
Lufthansa
Jan 12
STL6:40 pmLambert-St Louis
15h 55m
2 stops
CPH5:35 pmKastrup Copenhagen
Jan 22
CPH12:30 pmKastrup Copenhagen
32h 25m
1 stop
STL1:55 pmLambert-St Louis
$563
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Copenhagen 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 December 11, 2025.
Use the filters below to find and compare flights from St. Louis to Copenhagen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 1/12

6:44 pm-7:05 pm

2 stops17h 21m

Kastrup Copenhagen

Thu 1/22

1:00 pm-10:59 pm

2 stops40h 59m

$527

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/9

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

Fri 1/23

6:50 am-1:55 pm

1 stop14h 05m

$539

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/9

11:23 am-1:10 pm

2 stops18h 47m

Kastrup Copenhagen

Fri 1/23

2:15 pm-11:37 pm

2 stops16h 22m

$544

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/30

11:20 am-11:25 am

2 stops17h 05m

Kastrup Copenhagen

Tue 2/3

10:10 am-3:15 pm

2 stops36h 05m

$550

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/30

3:50 pm-12:00 pm

1 stop13h 10m

Kastrup Copenhagen

Tue 2/3

10:10 am-7:27 pm

2 stops16h 17m

$551

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

1:33 pm-2:20 pm

2 stops17h 47m

Kastrup Copenhagen

Sun 3/15

6:55 am-10:58 pm

2 stops22h 03m

$555

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 1/30

3:50 pm-1:45 pm

1 stop14h 55m

Kastrup Copenhagen

Tue 2/3

6:50 am-9:13 pm

2 stops21h 23m

$560

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 1/12

6:40 pm-5:35 pm

2 stops15h 55m

Kastrup Copenhagen

Thu 1/22

12:30 pm-1:55 pm

1 stop32h 25m

$563

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-1:35 pm

2 stops38h 30m

Kastrup Copenhagen

Sun 3/15

8:55 am-3:29 pm

2 stops36h 34m

$565

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

7:41 am-5:30 pm

2 stops26h 49m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$643

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Copenhagen from

How to get the cheapest flight ticket from St. Louis to Copenhagen

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 Copenhagen?

The cheapest month to fly to Copenhagen from St. Louis is in February. Flight prices, which tend to average around $651, are often lower during this time because this is during the off-season. If you aren’t able to travel to Copenhagen 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 $668.

What is the cheapest day to depart on your flight to Copenhagen?

The cheapest day to depart from St. Louis to Copenhagen is on a Tuesday when prices can be found for as low as $727. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Copenhagen for around $1,340.

What is the cheapest time of day to depart on your flight to Copenhagen?

Flying to Copenhagen 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. Try not to purchase tickets at noon because they tend to be around $1,047. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Copenhagen?

You are more likely to see cheaper flights to Copenhagen from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $820 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from St. Louis for as low as $743 on momondo.

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

You could potentially save up to 25% on your flight if you consider stops on a St. Louis to Copenhagen flight.

When to book flights from St. Louis to Copenhagen

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Copenhagen according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Copenhagen (STL to CPH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Copenhagen

Fastest flight time

14h 28m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 14h 28m
There are no direct flights from St. Louis to Copenhagen. There are no popular flight routes from St. Louis to Copenhagen.
Search flight deals

  • How far is Lambert-St Louis to Kastrup Copenhagen by plane?

    The straight-line distance from Lambert-St Louis to Kastrup Copenhagen is 4507.7 mi. In terms of flight time, this usually takes a little over 14h 28m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?

    Prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Kastrup Copenhagen Airport?

    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 Kastrup Copenhagen Airport.

  • What documentation or ID do you need to fly to Kastrup Copenhagen Airport?

    The travel and health documents required for your trip to Kastrup Copenhagen Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kastrup Copenhagen Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Copenhagen?

Best airlines flying from St. Louis to Copenhagen

Compare and see reviews for airlines that fly from St. Louis to Copenhagen with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $523Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,432 reviews
Search KLM flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,005 reviews
Search Delta flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,516 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.4
1,605 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,626 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

Traveling to a place near Copenhagen?

Book flights to Copenhagen if you plan to visit one of these locations
Kastrup
Roskilde

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Copenhagen?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Copenhagen. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Copenhagen with flexible booking policies on momondo?

Flights from St. Louis to Copenhagen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Copenhagen?

Once all potential St. Louis to Copenhagen flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Copenhagen right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Copenhagen flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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