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Cheap flights from St. Louis to Copenhagen from $315

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 2/3. 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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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.
Lufthansa Logo
1:15 pm - 5:35 pm
STL
-
CPH
21h 20m2 stops
Lufthansa Logo
6:00 am - 11:59 pm
CPH
-
STL
24h 59m2 stops
$533Lufthansa
Mon, Feb 2 - Mon, Feb 9
British Airways Logo
12:11 pm - 11:00 am
STL
-
CPH
15h 49m2 stops
British Airways Logo
8:50 pm - 7:30 pm
CPH
-
STL
29h 40m1 stop
$537British Airways
Wed, Apr 22 - Thu, Apr 30
British Airways Logo
2:29 pm - 8:05 pm
STL
-
CPH
22h 36m2 stops
British Airways Logo
8:50 pm - 10:14 pm
CPH
-
STL
32h 24m2 stops
$540British Airways
Wed, Apr 22 - Thu, Apr 30
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
10:05 am - 3:29 pm
CPH
-
STL
35h 24m2 stops
$554Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
Air Canada Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Air Canada Logo
10:05 am - 3:29 pm
CPH
-
STL
35h 24m2 stops
$558Air Canada
Sat, Mar 7 - Sun, Mar 15
British Airways Logo
1:29 pm - 1:15 pm
STL
-
CPH
16h 46m2 stops
British Airways Logo
8:50 am - 10:14 pm
CPH
-
STL
20h 24m2 stops
$629British Airways
Fri, Apr 17 - Sun, Apr 26
Multiple Airlines Logo
4:05 pm - 4:25 pm
STL
-
CPH
41h 20m2 stops
Multiple Airlines Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m1 stop
$636Multiple Airlines
Fri, Apr 17 - Sun, Apr 26
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m2 stops
Multiple Airlines Logo
6:50 am - 2:55 pm
CPH
-
STL
14h 05m1 stop
$649Multiple Airlines
Sat, Mar 7 - Sun, Mar 15
Multiple Airlines Logo
7:30 am - 4:50 pm
STL
-
CPH
26h 20m2 stops
Multiple Airlines Logo
5:40 pm - 12:21 pm
CPH
-
STL
49h 41m2 stops
$655Multiple Airlines
Mon, Jun 15 - Mon, Jun 22
Lufthansa Logo
3:30 pm - 2:10 pm
STL
-
CPH
15h 40m1 stop
Lufthansa Logo
6:20 am - 1:25 pm
CPH
-
STL
14h 05m1 stop
$666Lufthansa
Fri, Apr 17 - Sun, Apr 26

United Airlines flights from St. Louis to Copenhagen

Our best United Airlines deals on St. Louis to Copenhagen flight tickets
United Airlines
Jan 21
STL9:57 amLambert-St Louis
19h 28m
2 stops
CPH12:25 pmKastrup Copenhagen
Jan 25
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$720
Find similar
United Airlines
Jan 21
STL6:30 amLambert-St Louis
22h 55m
2 stops
CPH12:25 pmKastrup Copenhagen
Jan 25
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$721
Find similar
United Airlines
Jan 21
STL3:50 pmLambert-St Louis
12h 55m
1 stop
CPH11:45 amKastrup Copenhagen
Jan 25
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$728
Find similar

British Airways flights from St. Louis to Copenhagen

Our best British Airways deals on St. Louis to Copenhagen flight tickets
British Airways
Apr 22
STL12:11 pmLambert-St Louis
15h 49m
2 stops
CPH11:00 amKastrup Copenhagen
Apr 30
CPH8:50 pmKastrup Copenhagen
29h 40m
1 stop
STL7:30 pmLambert-St Louis
$537
Find similar
British Airways
Apr 22
STL10:00 pmLambert-St Louis
15h 05m
1 stop
CPH8:05 pmKastrup Copenhagen
Apr 30
CPH8:50 pmKastrup Copenhagen
29h 40m
1 stop
STL7:30 pmLambert-St Louis
$540
Find similar
British Airways
Apr 17
STL1:29 pmLambert-St Louis
16h 46m
2 stops
CPH1:15 pmKastrup Copenhagen
Apr 26
CPH8:50 amKastrup Copenhagen
20h 24m
2 stops
STL10:14 pmLambert-St Louis
$629
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 January 3, 2026.
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 2/2

1:15 pm-5:35 pm

2 stops21h 20m

Kastrup Copenhagen

Mon 2/9

6:00 am-11:59 pm

2 stops24h 59m

$533

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/22

12:11 pm-11:00 am

2 stops15h 49m

Kastrup Copenhagen

Thu 4/30

8:50 pm-7:30 pm

1 stop29h 40m

$537

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Wed 4/22

2:29 pm-8:05 pm

2 stops22h 36m

Kastrup Copenhagen

Thu 4/30

8:50 pm-10:14 pm

2 stops32h 24m

$540

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

10:05 am-3:29 pm

2 stops35h 24m

$554

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

10:05 am-3:29 pm

2 stops35h 24m

$558

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 4/17

1:29 pm-1:15 pm

2 stops16h 46m

Kastrup Copenhagen

Sun 4/26

8:50 am-10:14 pm

2 stops20h 24m

$629

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 4/17

4:05 pm-4:25 pm

2 stops41h 20m

Kastrup Copenhagen

Sun 4/26

6:20 am-1:25 pm

1 stop14h 05m

$636

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Sat 3/7

4:05 pm-2:00 pm

2 stops14h 55m

Kastrup Copenhagen

Sun 3/15

6:50 am-2:55 pm

1 stop14h 05m

$649

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Mon 6/15

7:30 am-4:50 pm

2 stops26h 20m

Kastrup Copenhagen

Mon 6/22

5:40 pm-12:21 pm

2 stops49h 41m

$655

St. LouisCopenhagen

STL - CPH

STLCPH

Lambert-St Louis

Fri 4/17

3:30 pm-2:10 pm

1 stop15h 40m

Kastrup Copenhagen

Sun 4/26

6:20 am-1:25 pm

1 stop14h 05m

$666

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
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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.

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 $819 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 22% 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 55m

Direct flights

None
The fastest flight from St. Louis to Copenhagen takes 14h 55m
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 55m.

  • 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
7,642 reviews
Search British Airways flights
United AirlinesPriceFrom $598Free CancellationRating
7.4
9,135 reviews
Search United Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,435 reviews
Search KLM flights
DeltaPriceFrom $643Free CancellationRating
7.9
8,023 reviews
Search Delta flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,581 reviews
Search Air Canada flights
Scandinavian AirlinesPriceFrom $661Free CancellationRating
7.4
1,629 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $690Free CancellationRating
6.8
7,676 reviews
Search Lufthansa flights
American AirlinesPriceFrom $733Free CancellationRating
7.2
11,081 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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