STL - CPH

$431 Find Cheap Flights from St. Louis to Copenhagen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Copenhagen departing on 2/3. 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 Copenhagen

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Copenhagen.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Copenhagen.
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Everything you should know

Cheapest round-trip
$524
Overall average: $651
Lufthansa
Sun 3/1Sun 3/8
STL - CPH • 2 stops
Cheapest one-way
$479
Typical prices: $643-$695
Lufthansa
Tue 2/3
STL - CPH • 2 stops
Top airlines
Lufthansa
Cheapest • from $524 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 21% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 19% 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 Copenhagen!
Flight Deals
Booking Insights
Flight Deals

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

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

Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
6:55 pm - 5:35 pm
STL
-
CPH
15h 40m
2 stops
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$524Lufthansa
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
4:05 pm - 2:00 pm
STL
-
CPH
14h 55m
2 stops
Multiple Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$528Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Lufthansa Logo
3:50 pm - 11:45 am
STL
-
CPH
12h 55m
1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$532Lufthansa
Mon, Apr 27 - Tue, May 12
Delta Logo
1:45 pm - 1:20 pm
STL
-
CPH
16h 35m
2 stops
Delta Logo
9:00 am - 4:40 pm
CPH
-
STL
14h 40m
1 stop
$538Delta
Mon, Apr 27 - Tue, May 12
British Airways Logo
12:11 pm - 3:40 pm
STL
-
CPH
20h 29m
2 stops
British Airways Logo
9:45 pm - 10:14 pm
CPH
-
STL
31h 29m
2 stops
$542British Airways
Sun, Mar 1 - Sun, Mar 8
American Airlines Logo
10:37 am - 1:30 pm
STL
-
CPH
19h 53m
2 stops
American Airlines Logo
8:40 am - 6:29 pm
CPH
-
STL
16h 49m
2 stops
$546American Airlines
Tue, Mar 17 - Tue, Mar 24
Delta Logo
1:39 pm - 1:10 pm
STL
-
CPH
17h 31m
2 stops
Delta Logo
8:10 am - 9:06 pm
CPH
-
STL
18h 56m
2 stops
$549Delta
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
3:50 pm - 11:45 am
STL
-
CPH
12h 55m
1 stop
United Airlines Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m
1 stop
$555United Airlines
Wed, Mar 4 - Sun, Mar 15
United Airlines Logo
6:55 pm - 11:05 pm
STL
-
CPH
21h 10m
2 stops
United Airlines Logo
6:50 am - 3:29 pm
CPH
-
STL
38h 39m
2 stops
$556United Airlines
Fri, Mar 6 - Fri, Mar 13
United Airlines Logo
5:00 am - 11:25 am
STL
-
CPH
23h 25m
2 stops
United Airlines Logo
10:10 am - 3:29 pm
CPH
-
STL
35h 19m
2 stops
$557United Airlines
Booking Insights

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Copenhagen, 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 St. Louis to Copenhagen is February, where tickets cost $651 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $991 and $934 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Copenhagen, 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 St. Louis to Copenhagen, you should book around 3 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$479
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from St. Louis to Copenhagen

When to book flights from St. Louis to Copenhagen

Are your dates flexible? Find out the best times to travel from St. Louis to Copenhagen 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 St. Louis to Copenhagen

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

    In the last 3 days, the lowest price for a flight from St. Louis to Copenhagen was $479 for a one-way ticket and $524 for a round-trip.

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

    A passport is required to fly from St. Louis to Copenhagen.

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

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

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

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

  • Which is the best airline for flights from St. Louis to Copenhagen, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from St. Louis to Copenhagen are Delta and KLM. With an average price for the route of $785 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $746 and an overall rating of 7.7.

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

    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 St. Louis to Copenhagen.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Copenhagen from 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 from St. Louis to Copenhagen?

    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 Copenhagen with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and CPH 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 St. Louis to Copenhagen?

    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 Copenhagen from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Copenhagen. 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 St. Louis to Copenhagen? 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.
7.9
DeltaOverall score based on 8128 reviews
7.2Food
8.5Crew
7.9Comfort
7.8Entertainment
8.1Boarding
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

The attendant on board was amazing. She should be doing business/first international long haul.

Although our flight was delayed the overall boarding process was very smooth and the crew was accommodating.

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

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

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.

The food was terrible this time. Otherwise pleasant, quiet, on-time.

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.

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

Update to handle the delay was very bad, crews no smiles or welcome or thanks. Don’t care attitude

It would be nice to have some low carb options in the snacks.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Service and food were excellent. Incredibly friendly and competent staff. Flight was delayed over and hour and I had to run between terminals to get my connecting flight.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

We missed our flight. There was not enough time built into the layover to get through immigration, customs, bagclaim, bag rechecking, and the long trip to another terminal and gate. Kayak really screwed up. We took the bus up to Wisconsin and then were picked up in Brookfield by private car. It was lucky we didnt miss the last bus out.

I tried both on line and by calling the Customer Service line to arrange for a special meal as i have food intolerances. I was under the impression from your service representative that I was successful. I was not. I cannot eat spicy foods and get very ill if i eat bell peppers. I could not eat either menu choice and no special meal was actually ordered. ( your representative tried to order it for a flight that did not have meal service!!! - found this out later). Your wonderful cabin crew managed to put together a fruit, salad, roll and cheese tray for me so I had something to eat. WHY WOULD YOU SERVE SPICY FOOD, WITH NO MILDER OPTION,ON AN INTERNATIONAL FLIGHT???

Crew was professional and great, flight was clean. However food was pathetic. I ordered a Hindu meal assuming no meat but they served chicken. Need to be very specific- Hindu meal should be categorize as Vegetarian - no meat or egg. Or it should be specific that we are serving meat.

Late flight Delays Poor service Poor staff Worst airline ever

Ground staff and cabin crew were excellent. Flight was perfectly on time. Zero issues.

Even after a delay, getting off the ground, thanks for keeping me safe, the airline made certain that my connecting flight was rebooked to get me to my final destination. It was actually rebooked twice, and my luggage still managed to meet me. The airline gave me a credit for food and beverage to be used at the airport vendors, regretfully, the credit did not transfer to my final boarding pass. Oh, well…

Trip was smooth, good drew, average meal, almost cold coffee. Excellent landing. Did not enjoy going down the stairs, walking to the gate, walking up the stairs, going a long walk to the exchange gate, and going down the stairs again to be bussed all the way where we originally landed to take our next flight! Over all an average experience. Thank you.

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

Information on your arrival and departure airports