$348 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 5/29. 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, 0 bags

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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Everything you should know

Cheapest round-trip
$515
Typical prices: $503-$708
American Airlines
Sun 4/26Sun 5/3
CPH - STL • 2 stops
Cheapest one-way
$348
Typical prices: $479-$546
Finnair
Fri 5/29
CPH - STL • 2 stops
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
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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!
Flight Deals
Booking Insights
Flight Deals

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

Sun, Apr 26 - Sun, May 3
American Airlines Logo
8:50 am - 7:30 pm
CPH
-
STL
17h 40m
2 stops
American Airlines Logo
9:40 pm - 5:20 pm
STL
-
CPH
12h 40m
1 stop
$515American Airlines
Sun, Apr 26 - Sun, May 3
American Airlines Logo
7:00 am - 7:30 pm
CPH
-
STL
19h 30m
1 stop
American Airlines Logo
9:40 pm - 5:20 pm
STL
-
CPH
12h 40m
1 stop
$518American Airlines
Sun, Apr 26 - Sun, May 3
American Airlines Logo
8:50 am - 7:30 pm
CPH
-
STL
17h 40m
2 stops
American Airlines Logo
6:54 pm - 5:20 pm
STL
-
CPH
15h 26m
2 stops
$519American Airlines
Sun, Apr 26 - Sun, May 3
Finnair Logo
7:30 pm - 7:30 pm
CPH
-
STL
31h 00m
2 stops
Finnair Logo
12:27 pm - 4:15 pm
STL
-
CPH
20h 48m
2 stops
$528Finnair
Thu, Apr 9 - Mon, Apr 13
American Airlines Logo
10:50 am - 10:14 pm
CPH
-
STL
18h 24m
2 stops
American Airlines Logo
7:40 pm - 8:50 pm
STL
-
CPH
18h 10m
2 stops
$530American Airlines
Sun, Apr 26 - Sun, May 3
British Airways Logo
7:00 am - 7:30 pm
CPH
-
STL
19h 30m
1 stop
British Airways Logo
6:54 pm - 5:20 pm
STL
-
CPH
15h 26m
2 stops
$533British Airways
Sun, Apr 26 - Sun, May 3
British Airways Logo
7:00 am - 7:30 pm
CPH
-
STL
19h 30m
1 stop
British Airways Logo
6:54 pm - 5:20 pm
STL
-
CPH
15h 26m
2 stops
$538British Airways
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
7:00 am - 7:30 pm
CPH
-
STL
19h 30m
1 stop
Multiple Airlines Logo
9:40 pm - 10:40 pm
STL
-
CPH
18h 00m
1 stop
$560Multiple Airlines
Sun, Apr 26 - Sun, May 3
Multiple Airlines Logo
7:00 am - 7:30 pm
CPH
-
STL
19h 30m
1 stop
Multiple Airlines Logo
9:40 pm - 3:55 pm
STL
-
CPH
11h 15m
1 stop
$566Multiple Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
6:45 am - 8:23 pm
BLL
-
STL
20h 38m
2 stops
United Airlines Logo
3:50 pm - 1:25 pm
STL
-
BLL
14h 35m
1 stop
$571United Airlines
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 March, where tickets cost $432 on average for one-way flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Denmark is $1,107 and $920 respectively. For return trips, the best month to travel is April with an average price of $532.

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 1 week before departure. For the absolute cheapest price, our data suggests you should book 82 days before departure.

Good to know

Low seasonMarch
Cheapest flight$348
Best time to beat the crowds with an average 24% drop in price.
Most popular time to fly with an average 17% 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.

  • 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.

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

    Each week there are around 1,828 direct flights from within Denmark to St. Louis. The most common day for departures is Friday, 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 9210 reviews
6.6Food
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

8.0 ExcellentAnonymous, Jan 2026
ORD - TPA
Read more United Airlines reviews

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

This Japanese airline provides great service and very helpful in assisting their passengers.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

I so appreciate the crew members on each flight of United. They are outstanding.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

Better entertainment & food options more may be adding chicken option or on vegetarian side good quality pasta

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

Amazing service, with enthusiastic crew members, and some breathtaking views of Vancouver. No IFE though, as it is only a 1 hour flight on a regional Turboprop jet.

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

My seat was covered in vomit and I will be reaching out to Air Canada

It's kindof ridiculous that your system is even asking me about this since my flight was canceled and I wasn't rescheduled.

3 hr delay at the gate while they were doing maintenance. Next time, do not board passengers while maintenance is being performed

Digital check in is very poor with air canada compaired to other airlines

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
Shrewsbury
Glencoe

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

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