$307 Find Cheap Flights from Denmark 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 to St. Louis departing on 11/17. 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 for flights 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 for flights to St. Louis, as well as popular online travel agencies
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Cheap Flights from Denmark to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denmark 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 Denmark to St. Louis

Fri, Oct 31 - Wed, Nov 5
Finnair Logo
6:05 am - 8:51 pmCPH-STL
20h 46m2 stops
Finnair Logo
1:20 pm - 6:35 pmSTL-CPH
22h 15m2 stops
$466Finnair
Find Deal
Fri, Oct 31 - Wed, Nov 5
Finnair Logo
6:05 am - 8:51 pmCPH-STL
20h 46m2 stops
Finnair Logo
1:20 pm - 4:15 pmSTL-CPH
19h 55m2 stops
$470Finnair
Find Deal
Fri, Oct 31 - Wed, Nov 5
 Logo
6:55 am - 8:51 pmCPH-STL
19h 56m2 stops
 Logo
5:58 pm - 5:20 pmSTL-CPH
16h 22m2 stops
Thu, Nov 20 - Thu, Dec 11
British Airways Logo
10:30 am - 10:34 pmCPH-STL
19h 04m2 stops
British Airways Logo
1:59 pm - 2:25 pmSTL-CPH
17h 26m2 stops
$478British 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
$487British Airways
Find Deal
Wed, Oct 8 - Wed, Oct 22
United Airlines Logo
6:10 am - 7:57 pmCPH-STL
20h 47m2 stops
United Airlines Logo
9:15 am - 10:50 amSTL-CPH
18h 35m1 stop
$542United Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 22
United Airlines Logo
6:05 am - 2:27 pmCPH-STL
15h 22m2 stops
United Airlines Logo
3:30 pm - 2:10 pmSTL-CPH
15h 40m1 stop
$548United Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 22
Air Canada Logo
12:45 pm - 7:38 pmCPH-STL
13h 53m1 stop
Air Canada Logo
9:15 am - 10:50 amSTL-CPH
18h 35m1 stop
$555Air Canada
Find Deal
Thu, Oct 9 - Wed, Oct 22
 Logo
6:15 am - 3:55 pmCPH-STL
16h 40m2 stops
 Logo
1:40 pm - 11:05 amSTL-CPH
14h 25m2 stops
Wed, Oct 8 - Fri, Oct 17
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
$623Air Canada
Find Deal

Everything you should know

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 • 13% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$466
Typical prices: $502-729
Finnair
Fri 10/31Wed 11/5
CPH - STL • 2 stops
Cheapest one-way
$307
Typical prices: $573-779
Finnair
Mon 11/17
CPH - STL • 2 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 flights to St. Louis

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights 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 to St. Louis is April, where tickets cost $481 on average for return flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Denmark is $729 and $598 respectively. For one-way flights, the best month to travel is March with an average price of $398.

How far in advance should I book a flight 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 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, 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 seasonJanuary
Cheapest flight$307
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 23% increase in price.
Flight from Copenhagen to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    The city center of St. Louis is 13 miles from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    There is only 1 airport in St. Louis, called Lambert-St Louis Airport (STL). It can also be referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Sunday where round-trip tickets can be as cheap as $431. On the other hand, the most expensive day to fly is Wednesday, where round-trip prices are $740 on average.

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

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

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

  • What is the Hacker Fare option on flights 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 with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight 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 up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the morning, when round-trip flights cost $577 on average. The most expensive time of day to fly to St. Louis is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $601.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 2,460 direct flights from within Denmark to St. Louis. The most common day for departures is Sunday, with 16% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

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

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Denmark to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with 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 8931 reviews
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
7.3Comfort
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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Glencoe
Shrewsbury

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

Information on the airport you'll fly into in St. Louis

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