$341 Find Cheap Flights from St. Louis to Denmark - Compare and Save

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Price, demand and travel trends for St. Louis to Denmark flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from St. Louis to Denmark cheaper or more expensive than last year?

Fares from St. Louis to Denmark are running about the same as they were around this time last year, averaging $919 round-trip.

What are the cheapest fares from St. Louis to Denmark right now?

The cheapest fare from St. Louis to Denmark in the last week was $743 round-trip, to Kastrup Copenhagen (CPH).

What’s the cheapest month to fly from St. Louis to Denmark?

January is the cheapest time of year to fly, with average fares of $654. Prices are highest in April, when average flight costs increase to around $1,211.

Which airport in Denmark is the cheapest to fly to from St. Louis?

All flights from St. Louis to Denmark arrive at Kastrup Copenhagen (CPH). On average, round-trip fares are around $938.

What’s the cheapest day to fly from St. Louis to Denmark?

Wednesday tends to be the cheapest day to fly from St. Louis to Denmark, while Saturday is the most expensive. Fares run about 14% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from St. Louis to Denmark?

Data from the past 12 months shows it's cheapest to fly to Denmark during the night with average prices of $725. The afternoon is the most expensive time to fly, with average prices of $954.

Key details for St. Louis to Denmark flights

Low season

October

Cheapest flight

$341
Beat the crowds with an average 64% drop in travelers.
The most popular month to fly with an average 120% increase in travelers.
One-way flight from St. Louis to Copenhagen

Your St. Louis to Denmark flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from St. Louis to Denmark?

    Yes. Fares from St. Louis to Denmark are low right now. As a rule of thumb, a round-trip under $832 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from St. Louis to Denmark?

    Over the past 12 months, round-trip fares from St. Louis to Denmark have ranged from $832 to $1,100.

  • What airlines fly nonstop from St. Louis to Denmark?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from St. Louis to Denmark. One-stop options include:

    • United Airlines
    • Delta
    • Lufthansa

  • Which cabin classes are available on flights from St. Louis to Denmark?

    On flights from St. Louis to Denmark you can book Economy Class, Premium Economy Class or Business Class.

  • What are some popular landmarks in Denmark?

    KAYAK travelers' favorite landmarks in Denmark include:

    • Tivoli
    • Amager Square
    • Bella Center
    • Legoland Billund

Your guide to booking St. Louis to Denmark flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for January when flights are typically cheapest and avoid April when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Saturday cost about 14% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Copenhagen, which is the most popular destination in Denmark. From there, it's easy to continue on to other popular destinations such as Kastrup, Aarhus and Billund.

Reviews of the top 5 airlines serving from St. Louis to Denmark

 
Need help choosing which airline to fly with from St. Louis to Denmark? 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.
7.8
DeltaOverall score based on 8696 reviews
8.5Crew
8.1Boarding
7.2Food
7.8Entertainment
7.8Comfort
Airline reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

2.0 MediocreAbhay, Oct 2026
Read more Delta reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

The flight was delayed and knowing I was going to miss my connection, nothing was done proactively to try and get me rebooked. It was an act of congress to do so. This is not on the crew, but on the experience itself

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

The leg room in economy was sub par, everything else was fine.

Friendly flight attendants and reasonable good food. Quick service throughout the trip.

I WAS CANCELLED ! I thought entire flight was canceled but it was still ongoing and I was only canceled as a passenger and one day before my flight with really poor "choice" of next flights that completely ruined my family event. Absolutely disappointed by SAS. Will be avoiding this airline now

The flight was pleasant with landing and take off being very smooth. Toilets were a bit busy at times but crew was very accommodating. Food service was quick and hot. The connecting short flight was full and there was not room for hand luggage.

Flight crew was very kind and polite. They had to deal with an unnamed issue right beside me, and did so with respect.

Good flight. Mass boarding. Seats fairly comfortable. Food okay although may have upset my stomach a bit.

The crew were nice and courteous. Exonomy seats were worse than expected. Overhead bin space was non existent thanks to loose enforcement of the carryon size and letting passengers put up their purses jackets and backpacks up there leaving no space for others with a small conforming carry on. Food was not good at all. Perhaps worse chicken I ever had in my life. I had to have them take it after tasting how bad it was. Whoever made that should not be in food making business.

The crew was very helpful and friendly. Food was good. The only issue was the legroom -- not great. The seat in front is also too close to see the entertainment screen properly.

No crying babies the whole flight would be nice. Impossible to sleep. No free snacks , only the main meal

You cancelled my flight and didn't arrange another. Sent no info except YOUR FLIGHT HAS BEEN CANCELLED. HERES WHAT TO DO NEXT. and the rest of the email was blank???

Requested for warm or hot water because of throat pain, it was denied. The entertainment system was hung, requested the crew to turn it off, instead of turning it off they rebooted the device. It was stuck again, no one bothered to check.

A couple flight attendants in business class had bad attitudes and provided poor service. They did provide drinks or refill drinks. They talked to certain passengers for long periods of time and ignored others.

Great Brasilia aircraft - not a Boeing 757 like the next part of the flight. Flight from MCI to IAD was great, on-time, comfortable, did I mention that? The flight from IAD to EDI was painful. One of the reasons I won't fly United again? Boeing 757, with a seat pitch and material that was horrendous. Worst aircraft ever, made worse by United sardine-can tight seating. Oh, and the connection window, 45 minutes, really? At IAD, in different concourses? What idiot came up with that flight scenario? Happily, (for me and my travel insurance people) the flight was late (reminiscent of American Airlines). The crew was professional and courteous.

On boarding crew at the airport called in the boarding numbers too early meaning before the previous line was completed resulting in later numbers getting to board ahead. Also she asked those who boarded from number 3 to have the tags in their carry-on bags and leave it in the jet bridge. Most of the overhead bins were empty though. This is more work for the ground staff in addition to more inconvenience for passengers waiting to get their carry-ons from the jet bridge.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

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.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Older interior meant less luggage storage space. Service was good. I was in business class. I receive better service from other carriers

It was pretty good. It was my first time using the airline I believe but it was a relatively pleasant experience.

Boarded on time and arrived early. Overall quick flight. Snack and beverage offered.

Good but I don’t received my bags yet is been 5days still no update

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Friendlier staff who are nice to the elderly who need assistance

Service was great. Flight was delayed an hour which made our connection very tight and stressful. But we fortunately made it.

There was a mistake with the first name we only discovered at security. Air canada was unable to correct it to match then passport since it was booked through an agency. The agency could not correct it either since they need at least two hours to do that. We could not fly and lost a bunch of money. Learned my lesson about kayak.

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

I appreciate the fact that the flight took off and landed on time What I didn’t like they never offer a snack eg nuts/cookies/chips

Perfect airline, super friendly, great service, tasty food. Would fly again.

Horrible seats. They were just coach seats with the middle seat blocked with a dirty seat tray.

we were able to make it to the connecting flight in Frankfurt to Copenhagen thanks to Lufthansa crew. The ground crew was waiting at the gate and received us and took us through special runway entrance and immigration check. We were on the plane at 10-09 am for 10-10 departure. Thanks to Andre and the other lady for mission impossible :)

The flight was delayed more than 1.5 hours. Phone calls to united did not satisfy our need to get to Chicago to met family for fight to europe. I was told the flight was booked thru luftansa and united could not make adjustments. When call luftansa they were unaware of the significant delay on the united flight out of mci. They would not authorize a flight change. We went to the airport, as if we would be flying as scheduled, United checked us in, as if our flight would leave as scheduled. We took our bag to be checked to the baggage drop and the agent their confirmed our flight was significantly delayed. She worked for 30 min to get us on another flight. We ended up flying to Denver then to Munich. The rest of the family that flew to Chicago for our meet up and flight to Europe ended up flying to Munich alone. We meet up in Munich for our last leg to luxembourg. In luxembourg we learned on bag was scheduled on our delayed flight. The flight was canceled and we did not receive the bag in lux. We filed a lost back claim. Now 3 days later we STILL do not have the bag. It is apparently in luxembourg and they maybe tried to deliver, however the names on the door of the air b&b do not match the name on the baggage claim so the French speaking delivery person called no one could understand him so he took the bag and left. My brother, traveling with me under a different reservation , has been without essentials for 3 days. One or all of us has stayed "home" each day waiting on the bag. Today was my turn. Delivery window was 10:30 to 2:30. No attempt to knock or ring bell. After the hang up call, my brother called me and told me to check the door. There was nothing there. No sign of attempted delivery, no delivery man, nothing. Being unable to change clothes and having family members take turns waiting on a bag that never comes has ruined this family vacation. Thanks United/Luftansa

The flight left an hour late and no explanation. Food was basically a few snacks out of bags and tiny cup of soda. Crew was pretty friendly.

The full flight boarded early, and then we sat on the tarmac for a long time waiting to get our plane de-iced. The crew was professional and pleasant, and the flight was pleasant overall, albeit slightly delayed. I did not use any of the entertainment options.

The The check in process was terrible on both ends. It was not clear if we should use the United, Lufthansa, or Aragrant number. It took over an hour to check in on the front end – and then at return the Lufthansa online check in failed multiple times and only after two calls to their phone number could we accomplish the task. The link to the Kayak site provided no access for check in. This difficulty and ambiguity on both ends will affect our interest in using Kayak for foreign travel in the future.

You lost my bag then waiting on the phone for 30 mins for customer service just to be directed to call another number

They didn't board the luggage and cph has poor service. During working hours they refuse calls, outside working hours you can't contact them. Lufthansa doesn't help or support

Boarding staff, crew and food needs a lot of improvement!! It was awful Aircraft was old with minimal legspace

More options for your flight from St. Louis to Denmark

Complete your trip to Denmark with a hotel stay or car rental