CPH - STL

$427 Find Cheap Flights from Copenhagen to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Copenhagen to St. Louis departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Copenhagen to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Copenhagen to St. Louis, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Copenhagen to St. Louis (CPH-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Copenhagen to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Copenhagen to St. Louis

Wed, Nov 12 - Tue, Nov 25
British Airways Logo
6:55 am - 6:25 pmCPH-STL
18h 30m2 stops
British Airways Logo
3:43 pm - 1:15 pmSTL-CPH
14h 32m2 stops
$487British Airways
Find Deal
Wed, Nov 12 - Tue, Nov 25
British Airways Logo
6:55 am - 6:25 pmCPH-STL
18h 30m2 stops
British Airways Logo
6:45 pm - 4:55 pmSTL-CPH
15h 10m2 stops
$488British Airways
Find Deal
Fri, Nov 14 - Fri, Dec 5
American Airlines Logo
8:40 am - 7:30 pmCPH-STL
17h 50m2 stops
American Airlines Logo
4:49 pm - 5:35 pmSTL-CPH
17h 46m2 stops
$492American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
10:30 am - 10:22 pmCPH-STL
18h 52m2 stops
American Airlines Logo
3:22 pm - 5:25 pmSTL-CPH
19h 03m2 stops
$494American Airlines
Find Deal
Wed, Nov 12 - Tue, Nov 25
Lufthansa Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
Lufthansa Logo
12:31 pm - 12:25 pmSTL-CPH
16h 54m2 stops
$502Lufthansa
Find Deal
Wed, Nov 12 - Tue, Nov 25
Lufthansa Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
Lufthansa Logo
12:31 pm - 12:25 pmSTL-CPH
16h 54m2 stops
$504Lufthansa
Find Deal
Fri, Nov 14 - Fri, Dec 5
United Airlines Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
United Airlines Logo
6:42 pm - 11:05 pmSTL-CPH
21h 23m2 stops
$540United Airlines
Find Deal
Wed, Nov 12 - Fri, Dec 5
United Airlines Logo
6:50 am - 1:55 pmCPH-STL
14h 05m1 stop
United Airlines Logo
10:00 am - 9:20 amSTL-CPH
16h 20m2 stops
$543United Airlines
Find Deal
Mon, Sep 29 - Sat, Oct 4
Air Canada Logo
12:25 pm - 7:57 pmCPH-STL
14h 32m1 stop
Air Canada Logo
1:30 pm - 11:05 amSTL-CPH
14h 35m2 stops
$553Air Canada
Find Deal
Tue, Sep 30 - Sat, Oct 4
Air Canada Logo
12:45 pm - 3:18 pmCPH-STL
33h 33m1 stop
Air Canada Logo
1:30 pm - 11:05 amSTL-CPH
14h 35m2 stops
$559Air Canada
Find Deal

Everything you should know

Top airlines
British Airways
Cheapest • from $487 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 12% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$487
Typical prices: $492-647
British Airways
Wed 11/12Tue 11/25
CPH - STL • 2 stops
Cheapest one-way
$427
Typical prices: $672-773
Multiple Airlines
Wed 10/29
CPH - STL • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Booking Insights

KAYAK's insights & trends for Copenhagen to St. Louis flights

Get data-powered insights and trends into flights from Copenhagen to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Copenhagen to St. Louis?

What’s the cheapest day of the week to fly from Copenhagen to St. Louis?

The average price of all round-trip flights from Copenhagen to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from Copenhagen to St. Louis, you should consider leaving on a Sunday and avoid Wednesdays if you are looking for the best rates. For your return to Copenhagen, you’ll find the best rates on Tuesdays and the most expensive ones on Thursdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Copenhagen to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Copenhagen to St. Louis is April, where tickets cost $481 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $710 and $617 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Copenhagen to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Copenhagen to St. Louis, you should book around 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$427
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Copenhagen to St. Louis

When to book flights from Copenhagen to St. Louis

Are your dates flexible? Find out the best times to travel from Copenhagen to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Copenhagen to St. Louis

  • What is the cheapest flight from Copenhagen to St. Louis?

    In the last 3 days, the lowest price for a flight from Copenhagen to St. Louis was $427 for a one-way ticket and $487 for a round-trip.

  • Do I need a passport to fly between Copenhagen and St. Louis?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Copenhagen and on arrival in St. Louis.

  • Which aircraft models fly most regularly from Copenhagen to St. Louis?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Copenhagen to St. Louis?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Copenhagen and St. Louis, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Copenhagen to St. Louis, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from Copenhagen to St. Louis are United Airlines and Air Canada. With an average price for the route of $628 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $588 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Copenhagen to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Copenhagen to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Copenhagen to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Copenhagen is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Copenhagen to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Copenhagen with another airline. Booking your flights between Copenhagen and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Copenhagen to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Copenhagen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Copenhagen to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Copenhagen to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Copenhagen to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8937 reviews
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
7.7Boarding
Airline reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

6.0 GoodKaren Andrea, Sep 2025IAH - MCO
Read more United Airlines reviews

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

I liked the behaviour of the crew members.The flight was good.

1 hour late No hot drinks No restroom in the back of the plane

I swear airplane seats keep getting smaller and smaller but everything else was great. Smooth sailing and we got in early.

No food to provide, they forgot that, in some cases, people stay at the airport for hours without food. Now, to provide them with food, they have to ask them to pay, because some don't have money. That way, they can't eat.

After a long flight from Tokyo, our connecting flight home was canceled due to “maintenance” while we were on our layover in Toronto. Very frustrating to close out our honeymoon, although I’m sure others had it even worse during last week’s strike. Air Canada staff at Pearson Airport are the one thing that kept me remotely at peace during this — they were very helpful and deserve a lot of props. But I would not fly Air Canada again.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Horrible flight cancelled had to buy another very expensive ticket

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

Air Canada marooned me in Canada with no way back home during my summer vacation. I had to buy a last minute flight ticket for over $500 to make it back home. I have their credit card and have flown them for years. Never again.

Flight was cancelled last minute. Had to scramble and purchase a $2000 flight through a separate airlines. Stuck in Toronto two extra days. Missed my first two days on a new job. Had to rent a car for an additional two days. Scrambled to fins a place to live those extra two days. Spent a ton of extra money and lost a lot of money, as well as made a poor impression at work. Difficult difficult difficult

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

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