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Cheap flights from Copenhagen to St. Louis from $309

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Copenhagen to St. Louis departing on 11/17. 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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Find the cheapest flights from Copenhagen to St. Louis

Cheap round-trip flights

Multiple Airlines Logo
6:55 am - 8:51 pmCPH-STL
19h 56m2 stops
Multiple Airlines Logo
11:42 am - 12:15 pmSTL-CPH
17h 33m2 stops
$476Multiple Airlines
Find Deal
Fri, Oct 31 - Wed, Nov 5
British Airways Logo
10:30 am - 8:23 pmCPH-STL
16h 53m2 stops
British Airways Logo
3:43 pm - 2:20 pmSTL-CPH
15h 37m2 stops
$488British Airways
Find Deal
Wed, Nov 12 - Tue, Nov 25
American Airlines Logo
10:30 am - 11:59 pmCPH-STL
20h 29m2 stops
American Airlines Logo
3:59 pm - 2:50 pmSTL-CPH
15h 51m2 stops
$496American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
10:30 am - 11:58 pmCPH-STL
20h 28m2 stops
American Airlines Logo
11:50 am - 4:10 pmSTL-CPH
21h 20m2 stops
$499American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Lufthansa Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
Lufthansa Logo
12:31 pm - 12:25 pmSTL-CPH
16h 54m2 stops
$521Lufthansa
Find Deal
Wed, Nov 12 - Tue, Nov 25
Air Canada Logo
6:10 am - 7:57 pmCPH-STL
20h 47m2 stops
Air Canada Logo
9:15 am - 10:50 amSTL-CPH
18h 35m1 stop
$542Air Canada
Find Deal
Wed, Oct 8 - Fri, Oct 17
United Airlines Logo
6:50 am - 2:55 pmCPH-STL
14h 05m1 stop
United Airlines Logo
3:50 pm - 11:45 amSTL-CPH
12h 55m1 stop
$543United Airlines
Find Deal
Fri, Oct 31 - Wed, Nov 5
United Airlines Logo
9:35 am - 7:42 pmCPH-STL
17h 07m2 stops
United Airlines Logo
4:05 pm - 10:50 amSTL-CPH
11h 45m1 stop
$551United Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 22
Air Canada Logo
6:50 am - 3:18 pmCPH-STL
15h 28m2 stops
Air Canada Logo
4:05 pm - 2:15 pmSTL-CPH
15h 10m2 stops
$564Air Canada
Find Deal
Tue, Oct 7 - Wed, Oct 22
Lufthansa Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
Lufthansa Logo
11:49 am - 12:25 pmSTL-CPH
17h 36m2 stops
$642Lufthansa
Find Deal
Sun, Nov 16 - Tue, Nov 25

KLM flights from Copenhagen to St. Louis

Our best KLM deals on Copenhagen to St. Louis flight tickets
KLM
Oct 2
CPH2:45 pmKastrup Copenhagen
15h 39m
2 stops
STL11:24 pmLambert-St Louis
Oct 9
STL12:14 pmLambert-St Louis
14h 41m
1 stop
CPH9:55 amKastrup Copenhagen
$530
Find similar
KLM
Oct 8
CPH12:30 pmKastrup Copenhagen
17h 37m
1 stop
STL11:07 pmLambert-St Louis
Oct 17
STL5:31 pmLambert-St Louis
33h 24m
1 stop
CPH9:55 amKastrup Copenhagen
$661
Find similar
KLM
Oct 8
CPH12:30 pmKastrup Copenhagen
17h 37m
1 stop
STL11:07 pmLambert-St Louis
Oct 17
STL6:52 pmLambert-St Louis
14h 13m
2 stops
CPH4:05 pmKastrup Copenhagen
$676
Find similar

United Airlines flights from Copenhagen to St. Louis

Our best United Airlines deals on Copenhagen to St. Louis flight tickets
United Airlines
Oct 31
CPH6:50 amKastrup Copenhagen
14h 05m
1 stop
STL2:55 pmLambert-St Louis
Nov 5
STL3:50 pmLambert-St Louis
12h 55m
1 stop
CPH11:45 amKastrup Copenhagen
$543
Find similar
United Airlines
Oct 7
CPH9:35 amKastrup Copenhagen
17h 07m
2 stops
STL7:42 pmLambert-St Louis
Oct 22
STL4:05 pmLambert-St Louis
11h 45m
1 stop
CPH10:50 amKastrup Copenhagen
$551
Find similar
United Airlines
Sep 18
CPH12:35 pmKastrup Copenhagen
34h 09m
2 stops
STL3:44 pmLambert-St Louis
Sep 29
STL9:15 amLambert-St Louis
18h 35m
1 stop
CPH10:50 amKastrup Copenhagen
$707
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Copenhagen to St. Louis 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 September 17, 2025.
Use the filters below to find and compare flights from Copenhagen to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Fri 10/31

6:55 am-8:51 pm

2 stops19h 56m

Lambert-St Louis

Wed 11/5

11:42 am-12:15 pm

2 stops17h 33m

$476

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 11/12

10:30 am-8:23 pm

2 stops16h 53m

Lambert-St Louis

Tue 11/25

3:43 pm-2:20 pm

2 stops15h 37m

$488

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Thu 12/4

10:30 am-11:59 pm

2 stops20h 29m

Lambert-St Louis

Mon 12/8

3:59 pm-2:50 pm

2 stops15h 51m

$496

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Thu 12/4

10:30 am-11:58 pm

2 stops20h 28m

Lambert-St Louis

Mon 12/8

11:50 am-4:10 pm

2 stops21h 20m

$499

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 11/12

6:50 am-1:55 pm

1 stop14h 05m

Lambert-St Louis

Tue 11/25

12:31 pm-12:25 pm

2 stops16h 54m

$521

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Wed 10/8

6:10 am-7:57 pm

2 stops20h 47m

Lambert-St Louis

Fri 10/17

9:15 am-10:50 am

1 stop18h 35m

$542

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Fri 10/31

6:50 am-2:55 pm

1 stop14h 05m

Lambert-St Louis

Wed 11/5

3:50 pm-11:45 am

1 stop12h 55m

$543

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Tue 10/7

9:35 am-7:42 pm

2 stops17h 07m

Lambert-St Louis

Wed 10/22

4:05 pm-10:50 am

1 stop11h 45m

$551

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Tue 10/7

6:50 am-3:18 pm

2 stops15h 28m

Lambert-St Louis

Wed 10/22

4:05 pm-2:15 pm

2 stops15h 10m

$564

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Sun 11/16

6:50 am-1:55 pm

1 stop14h 05m

Lambert-St Louis

Tue 11/25

11:49 am-12:25 pm

2 stops17h 36m

$642

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 St. Louis from

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

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 typical price of a round-trip flight between Copenhagen and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, April is the cheapest month to fly from Copenhagen to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $481. The month of February is another great option to travel to St. Louis, with average flight prices from Copenhagen averaging around $493.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Sunday when prices can be found for as low as $431. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $740. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Copenhagen in the morning is the least expensive time of day to depart. momondo users have found prices as low as $577 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $601 per ticket.

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Copenhagen when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $552 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Copenhagen for as low as $455 on momondo.

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

You could potentially save up to 21% on your flight if you consider stops on a Copenhagen to St. Louis flight.

How have Copenhagen to St. Louis flight prices changed over time?

When to book flights from Copenhagen to St. Louis

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

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

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

Direct flights

None
There are no direct flights from Copenhagen to St. Louis. There are no popular flight routes from Copenhagen to St. Louis.
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  • How far is Kastrup Copenhagen to Lambert-St Louis by plane?

    There are 4507.7 mi between Kastrup Copenhagen and Lambert-St Louis. Typically, this will take 14h 05m by plane in normal conditions.

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

    Prices for flights from Kastrup Copenhagen Airport to Lambert-St Louis Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kastrup Copenhagen Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Best airlines flying from Copenhagen to St. Louis

Compare and see reviews for airlines that fly from Copenhagen to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $485Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
Air CanadaPriceFrom $567Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

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

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

Yes. All flights to St. Louis from Copenhagen on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Copenhagen to St. Louis 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 Copenhagen to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Copenhagen to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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