STL - CPH

$494 Find Cheap Flights from St. Louis to Copenhagen

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Copenhagen departing on 1/9. 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
$494
Overall average: $668
Lufthansa
Fri 1/9Fri 1/23
STL - CPH • 1 stop
Cheapest one-way
Multiple Airlines
Sat 12/13
STL - CPH • multi-stop
Top airlines
Lufthansa
Cheapest • from $518 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 21% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Fri, Jan 9 - Fri, Jan 23
Lufthansa Logo
3:50 pm - 6:15 pm
STL
-
CPH
19h 25m1 stop
Lufthansa Logo
6:50 am - 11:59 pm
CPH
-
STL
24h 09m2 stops
$494Lufthansa
Fri, Jan 9 - Fri, Jan 23
Lufthansa Logo
3:50 pm - 12:00 pm
STL
-
CPH
13h 10m1 stop
Lufthansa Logo
6:50 am - 1:55 pm
CPH
-
STL
14h 05m1 stop
$518Lufthansa
Mon, Jan 26 - Tue, Feb 10
British Airways Logo
2:54 pm - 2:50 pm
STL
-
CPH
16h 56m2 stops
British Airways Logo
1:00 pm - 10:59 pm
CPH
-
STL
40h 59m2 stops
$527British Airways
Wed, Feb 18 - Tue, Feb 24
British Airways Logo
6:43 pm - 9:50 pm
STL
-
CPH
20h 07m2 stops
British Airways Logo
1:00 pm - 7:25 pm
CPH
-
STL
37h 25m2 stops
$528British Airways
Mon, Jan 26 - Mon, Feb 2
British Airways Logo
6:00 am - 11:30 am
STL
-
CPH
22h 30m2 stops
British Airways Logo
6:35 pm - 10:44 pm
CPH
-
STL
35h 09m2 stops
$539British Airways
Fri, Jan 23 - Tue, Feb 10
Delta Logo
1:18 pm - 1:10 pm
STL
-
CPH
16h 52m2 stops
Delta Logo
6:00 am - 8:06 pm
CPH
-
STL
21h 06m2 stops
$544Delta
Fri, Jan 9 - Fri, Jan 23
Multiple Airlines Logo
2:54 pm - 1:45 pm
STL
-
CPH
15h 51m2 stops
Multiple Airlines Logo
11:20 am - 9:03 am
CPH
-
STL
28h 43m2 stops
$547Multiple Airlines
Fri, Jan 30 - Tue, Feb 3
United Airlines Logo
8:05 am - 11:25 am
STL
-
CPH
20h 20m2 stops
United Airlines Logo
10:10 am - 3:15 pm
CPH
-
STL
36h 05m2 stops
$550United Airlines
Sat, Jan 24 - Tue, Feb 10
Delta Logo
9:59 am - 9:20 am
STL
-
CPH
16h 21m2 stops
Delta Logo
9:55 am - 8:43 pm
CPH
-
STL
17h 48m2 stops
$551Delta
Fri, Jan 30 - Mon, Feb 2
United Airlines Logo
8:05 am - 11:25 am
STL
-
CPH
20h 20m2 stops
United Airlines Logo
6:00 am - 3:29 pm
CPH
-
STL
40h 29m2 stops
$552United 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’s the cheapest day of the week to fly from St. Louis to Copenhagen?

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

If you are looking for a flight deal from St. Louis to Copenhagen, look for departures on Tuesdays and avoid leaving on a Thursday, as it's usually the priciest day. When flying back from Copenhagen, Sunday is the cheapest day to fly and Wednesday is the most expensive.

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 $1,048 and $968 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$494
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 27% 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 $494 for a round-trip ticket.

  • 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 $787 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 $755 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 8007 reviews
7.3Food
8.1Boarding
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

6.0 GoodJeff, Dec 2025
JFK - MIA
Read more Delta reviews

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Getting to the flight was arduous and lengthy. The flight itself was good but the food option wasn’t a good selection. I need to do a Kosher option on my return. Flight crew were nice

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

United have really come back. Airport and boarding process is clear and good, app and information also very good

They charged a fee for 1st bag checked. Others in same party were free.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Not comparable to Qatar Airways services on flights to Doha. Flight attendants provided basic services; I was never recognized by name or as an Executive Platinum member. Restrooms were not kept clean during the flight.

Awful. They won’t help me with anything. I booked on American but they abdicated to Iberia. The ticket was overpriced. Everything negative

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

I got sick nothing contagious but distressing enough and the care I received on the flight was astounding.

Waaay too small plane. They also need to up the size of the overhead bins. I would love to keep me 3k with of camera equipment in my hard case baggahe instead of it being thrown into the belly of the plane

Attendants were pleasant and the flight was smooth and relaxed.

A little late at the start but all worked out well.

It was fine. No drinks nor snacks offered though. I thought that was unusual.

I liked the humor of the captain and crew on the flight from Flagstaff to Dallas. They were humorous.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

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.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

Information on your arrival and departure airports