How long is the flight from Copenhagen to St. Louis?

Departing from Copenhagen to St. Louis will take you 17h 39m. The distance from Copenhagen to St. Louis is about 4511 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Copenhagen to St. Louis round-trip?

United Airlines, at $485, was found to be the cheapest airline from Copenhagen to St. Louis. An alternate airline flying to your destination would be Air Canada. Users have found that United Airlines is 12% cheaper than the other options available to this destination.

What is the cheapest day to fly from Copenhagen to St. Louis?

Travelers seeking maximum savings on their Copenhagen to St. Louis flight should consider departing on Sunday mornings when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What is the cheapest time of day to fly from CPH to STL?

It’s optimal to fly from Copenhagen to St. Louis in the morning. By choosing this option you can save up to 4% on the cost of your flight, compared to a flight at noon.

Can I find deals for flights from Copenhagen to St. Louis that include hotel bookings?

Yes. In addition to deals on Copenhagen to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Copenhagen to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Copenhagen to St. Louis.

Can I find deals for business class flights from Copenhagen to St. Louis?

Yes. Cheapflights offers flight deals from Copenhagen to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$309+ Flights from Copenhagen to St. Louis

Q: How much does it cost to fly round-trip from Copenhagen to St. Louis?

Airfare is below average for this route at the moment. Copenhagen to St. Louis flights typically cost between $495 and $669 in October. The cheapest round-trip price found within the last 3 days was $476 on Multiple Airlines (Oct 31-Nov 5).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Kastrup Copenhagen to Lambert-St Louis are usually found in April or February, booked 49 days in advance, depart on a Saturday or Thursday and return on a Tuesday

Cheap flight deals from Copenhagen to St. Louis

Round-trip from	$476 (Billigflug)
One-way from	$309 (Flysmarter)
Popular in	July
Cheapest in	April
Average price	$562

From Kastrup Copenhagen to Lambert-St Louis

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One-way flight from Kastrup Copenhagen to Lambert-St Louis

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Highest demand for flights based on searches. 13% potential increase in price ($85 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Copenhagen to St. Louis

Cheapest flights from Copenhagen to St. Louis
Explore the most affordable flight options available from Copenhagen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Fri 10/316:55 amCPH - STL

2 stops19h 56mMultiple Airlines

Wed 11/511:42 amSTL - CPH

2 stops17h 33mMultiple Airlines

Deal found 9/15

$476

Wed 11/1210:30 amCPH - STL

2 stops16h 53mBritish Airways

Tue 11/253:43 pmSTL - CPH

2 stops15h 37mBritish Airways

Deal found 9/15

$488

Thu 12/410:30 amCPH - STL

2 stops20h 29mAmerican Airlines

Mon 12/83:59 pmSTL - CPH

2 stops15h 51mAmerican Airlines

Deal found 9/14

$496

Fri 12/56:50 amCPH - STL

1 stop14h 05mLufthansa

Wed 12/101:00 pmSTL - CPH

2 stops15h 45mLufthansa

Deal found 9/17

$509

Wed 11/126:50 amCPH - STL

1 stop14h 05mLufthansa

Tue 11/2512:31 pmSTL - CPH

2 stops16h 54mLufthansa

Deal found 9/15

$521

Mon 9/299:00 amCPH - STL

1 stop14h 48mMultiple Airlines

Sat 10/412:15 pmSTL - CPH

1 stop14h 40mMultiple Airlines

Deal found 9/15

$522

Thu 10/29:00 amCPH - STL

1 stop14h 48mMultiple Airlines

Thu 10/912:14 pmSTL - CPH

1 stop14h 41mMultiple Airlines

Deal found 9/16

$523

Thu 10/22:45 pmCPH - STL

2 stops15h 39mKLM

Thu 10/912:14 pmSTL - CPH

1 stop14h 41mKLM

Deal found 9/16

$530

Best flights from Copenhagen to St. Louis
Discover carefully curated flight deals from Copenhagen to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

Fri 10/316:55 amCPH - STL

2 stops19h 56mMultiple Airlines

Wed 11/511:42 amSTL - CPH

2 stops17h 33mMultiple Airlines

Deal found 9/15

$476

Sun 11/1611:50 amCPH - STL

2 stops17h 39mBritish Airways

Tue 11/253:43 pmSTL - CPH

2 stops15h 37mBritish Airways

Deal found 9/15

$488

Thu 12/410:30 amCPH - STL

2 stops20h 29mAmerican Airlines

Mon 12/83:59 pmSTL - CPH

2 stops15h 51mAmerican Airlines

Deal found 9/14

$496

Fri 12/56:50 amCPH - STL

1 stop14h 05mLufthansa

Wed 12/101:00 pmSTL - CPH

2 stops15h 45mLufthansa

Deal found 9/17

$509

Wed 11/126:50 amCPH - STL

1 stop14h 05mLufthansa

Tue 11/2512:31 pmSTL - CPH

2 stops16h 54mLufthansa

Deal found 9/15

$521

Thu 10/29:00 amCPH - STL

1 stop14h 48mMultiple Airlines

Thu 10/912:14 pmSTL - CPH

1 stop14h 41mMultiple Airlines

Deal found 9/16

$523

Tue 10/710:55 amCPH - STL

2 stops20h 01mBritish Airways

Wed 10/225:09 pmSTL - CPH

2 stops23h 21mBritish Airways

Deal found 9/17

$530

Last-minute flights from Copenhagen to St. Louis
Discover last-minute flight deals from Copenhagen to St. Louis. Data last updated September 17, 2025 and is based on user searches.

Mon 9/299:00 amCPH - STL

1 stop14h 48mMultiple Airlines

Sat 10/412:15 pmSTL - CPH

1 stop14h 40mMultiple Airlines

Deal found 9/15

$522

Mon 9/296:10 amCPH - STL

2 stops21h 24mDelta

Sat 10/46:40 amSTL - CPH

2 stops20h 15mDelta

Deal found 9/15

$556

Thu 10/29:00 amCPH - STL

1 stop14h 48mMultiple Airlines

Thu 10/912:14 pmSTL - CPH

1 stop14h 41mMultiple Airlines

Deal found 9/16

$523

Thu 10/22:45 pmCPH - STL

2 stops15h 39mKLM

Thu 10/912:14 pmSTL - CPH

1 stop14h 41mKLM

Deal found 9/16

$530

Thu 10/23:10 pmCPH - STL

2 stops25h 31mBritish Airways

Thu 10/912:52 pmSTL - CPH

2 stops27h 38mBritish Airways

Deal found 9/16

$546

Thu 10/29:00 amCPH - STL

1 stop14h 48mDelta

Thu 10/96:40 amSTL - CPH

2 stops16h 50mDelta

Deal found 9/17

$552

Tue 10/79:35 amCPH - STL

2 stops17h 07mUnited Airlines

Wed 10/224:05 pmSTL - CPH

1 stop11h 45mUnited Airlines

Deal found 9/17

$551

Wed 10/86:10 amCPH - STL

2 stops20h 47mAir Canada

Fri 10/179:15 amSTL - CPH

1 stop18h 35mAir Canada

Deal found 9/17

$542

Fri 10/316:55 amCPH - STL

2 stops19h 56mMultiple Airlines

Wed 11/511:42 amSTL - CPH

2 stops17h 33mMultiple Airlines

Deal found 9/15

$476

Fri 10/316:50 amCPH - STL

1 stop14h 05mLufthansa

Wed 11/512:31 pmSTL - CPH

2 stops13h 49mLufthansa

Deal found 9/15

$543

One-way flights from Copenhagen to St. Louis
Search for one-way flight options from Copenhagen to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Mon 11/176:05 amCPH - STL

2 stops20h 25mFinnair

Deal found 9/15

$309

Sun 11/166:55 amCPH - STL

2 stops19h 34mAmerican Airlines

Deal found 9/16

$339

Tue 11/186:30 pmCPH - STL

3 stops47h 31mMultiple Airlines

Deal found 9/16

$460

Sun 11/166:00 amCPH - STL

3 stops45h 12mMultiple Airlines

Deal found 9/16

$534

Mon 11/171:15 pmCPH - STL

1 stop28h 34mDelta

Deal found 9/15

$897

Sun 11/161:15 pmCPH - STL

1 stop17h 25mDelta

Deal found 9/16

$898

Tue 11/1810:10 amCPH - STL

1 stop34h 45mUnited Airlines

Deal found 9/16

$1,425

Mon 11/176:20 amCPH - STL

3 stops40h 09mMultiple Airlines

Deal found 9/15

$1,563

Cheapflights Fare Finder

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

Sun 11/16

11:50 am-10:29 pm

2 stops17h 39m

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

Fri 12/5

6:50 am-1:55 pm

1 stop14h 05m

Lambert-St Louis

Wed 12/10

1:00 pm-11:45 am

2 stops15h 45m

$509

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

Thu 10/2

9:00 am-4:48 pm

1 stop14h 48m

Lambert-St Louis

Thu 10/9

12:14 pm-9:55 am

1 stop14h 41m

$523

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Tue 10/7

10:55 am-11:56 pm

2 stops20h 01m

Lambert-St Louis

Wed 10/22

5:09 pm-11:30 pm

2 stops23h 21m

$530

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Sun 11/16

6:55 am-7:29 pm

2 stops19h 34m

$339

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Tue 11/18

6:25 am-10:29 pm

2 stops23h 04m

$339

CopenhagenSt. Louis

CPH - STL

CPHSTL

Kastrup Copenhagen

Tue 11/18

6:30 pm-11:01 am

3 stops47h 31m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 14 results

Best time to book a flight from Copenhagen to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Copenhagen with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Copenhagen to St. Louis

How far ahead should I book a flight from Copenhagen to St. Louis?

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Copenhagen to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Copenhagen to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Copenhagen to St. Louis (average of $311). Flying from Copenhagen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Copenhagen to St. Louis?

Reviews of airlines servicing St. Louis

See what other customers who have flown with United Airlines and Air Canada from Copenhagen to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

10.0

Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

United Airlines

7.4

Good

8,926 reviews

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

10.0

Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Air Canada

7.1

Good

10,000 reviews

United Airlines

7.4

Good

8,926 reviews

Reviews

1 / 20

10.0

Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

How long is the flight from Copenhagen to St. Louis?
Departing from Copenhagen to St. Louis will take you 17h 39m. The distance from Copenhagen to St. Louis is about 4511 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Copenhagen to St. Louis round-trip?
United Airlines, at $485, was found to be the cheapest airline from Copenhagen to St. Louis. An alternate airline flying to your destination would be Air Canada. Users have found that United Airlines is 12% cheaper than the other options available to this destination.
Can I find deals for flights from Copenhagen to St. Louis that include hotel bookings?
Yes. In addition to deals on Copenhagen to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Copenhagen to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Copenhagen to St. Louis.
Can I find deals for business class flights from Copenhagen to St. Louis?
Yes. Cheapflights offers flight deals from Copenhagen to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Copenhagen to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Copenhagen to St. Louis (average of $311). Flying from Copenhagen to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Copenhagen to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$485	Average$594	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$567	Average$588	FlexibilityNo cancel fee	On-time67%

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$309+ Cheap flights from Copenhagen (CPH) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Copenhagen to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Kastrup Copenhagen to Lambert-St Louis are usually found in April or February, booked 49 days in advance, depart on a Saturday or Thursday and return on a Tuesday

Cheap flight deals from Copenhagen to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Copenhagen to St. Louis

Cheapest flights from Copenhagen to St. LouisExplore the most affordable flight options available from Copenhagen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from Copenhagen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Copenhagen to St. Louis that are best for you.

Best time to book a flight from Copenhagen to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Copenhagen with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Copenhagen to St. Louis

How far ahead should I book a flight from Copenhagen to St. Louis?

What is the cheapest month to book a flight from Copenhagen to St. Louis?

How much does it cost to fly round-trip from Copenhagen to St. Louis?

Reviews of airlines servicing St. Louis

See what other customers who have flown with United Airlines and Air Canada from Copenhagen to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Copenhagen to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Copenhagen to St. Louis?

What are the cheapest airlines flying from Copenhagen to St. Louis round-trip?

Can I find deals for flights from Copenhagen to St. Louis that include hotel bookings?

How can I find direct flights from Copenhagen to St. Louis?

Can I find deals for business class flights from Copenhagen to St. Louis?

What is the cheapest month to book a flight from Copenhagen to St. Louis?

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Copenhagen to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Copenhagen to St. Louis

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Cheapest flights from Copenhagen to St. Louis
Explore the most affordable flight options available from Copenhagen to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.