STL - CPH

$370 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 8/3. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from St. Louis to Copenhagen

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Copenhagen.
Discover the best prices for you by selecting your travel dates on KAYAK.
British Airways Logo
5:27 pm - 8:55 pmSTL-CPH
20h 28m2 stops
British Airways Logo
9:45 pm - 3:48 pmCPH-STL
25h 03m2 stops
$623British Airways
Find Deal
Mon, Aug 4 - Mon, Aug 18
British Airways Logo
1:16 pm - 11:15 amSTL-CPH
14h 59m1 stop
British Airways Logo
2:00 pm - 9:05 pmCPH-STL
38h 05m2 stops
$643British Airways
Find Deal
Mon, Aug 4 - Mon, Aug 18
Air Canada Logo
1:30 pm - 7:10 amSTL-CPH
10h 40m1 stop
Air Canada Logo
12:45 pm - 2:19 pmCPH-STL
32h 34m2 stops
$696Air Canada
Find Deal
Sun, Sep 28 - Tue, Oct 21
Air Canada Logo
9:15 am - 7:10 amSTL-CPH
14h 55m2 stops
Air Canada Logo
12:45 pm - 2:19 pmCPH-STL
32h 34m2 stops
$703Air Canada
Find Deal
Sun, Sep 28 - Tue, Oct 21
United Airlines Logo
1:30 pm - 7:10 amSTL-CPH
10h 40m1 stop
United Airlines Logo
6:10 am - 7:57 pmCPH-STL
20h 47m2 stops
$814United Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
United Airlines Logo
1:00 pm - 10:50 amSTL-CPH
38h 50m2 stops
United Airlines Logo
12:25 pm - 12:20 pmCPH-STL
30h 55m2 stops
$825United Airlines
Find Deal
Sun, Jun 8 - Fri, Jun 20
Scandinavian Airlines Logo
3:40 pm - 10:50 amSTL-CPH
12h 10m1 stop
Scandinavian Airlines Logo
1:25 pm - 11:51 pmCPH-STL
17h 26m1 stop
$847Scandinavian Airlines
Find Deal
Mon, Jun 2 - Mon, Jun 16
American Airlines Logo
9:42 am - 11:15 amSTL-CPH
18h 33m1 stop
American Airlines Logo
2:00 pm - 8:21 pmCPH-STL
13h 21m1 stop
$913American Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
American Airlines Logo
4:58 pm - 11:15 amSTL-CPH
11h 17m1 stop
American Airlines Logo
2:00 pm - 8:19 pmCPH-STL
13h 19m1 stop
$1,023American Airlines
Find Deal
Sun, Jun 8 - Fri, Jun 20
Scandinavian Airlines Logo
1:09 pm - 10:35 amSTL-CPH
14h 26m1 stop
Scandinavian Airlines Logo
1:40 pm - 8:39 pmCPH-STL
13h 59m1 stop
$1,635Scandinavian Airlines
Find Deal
Wed, May 14 - Sat, May 17
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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 $659 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,208 and $998 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 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonFebruary
High seasonJune
Cheapest flight$370
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 17% 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 $370 for a one-way ticket and $623 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?

    Star Alliance, oneworld, and SkyTeam 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Copenhagen are Delta and United Airlines. With an average price for the route of $811 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $893 and an overall rating of 7.4.

  • 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.

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.
7.4
United AirlinesOverall score based on 8696 reviews
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

10.0 ExcellentAnonymous, Apr 2025SFO - HKG
Read more United Airlines reviews

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

Very helpful in getting us off the plane first to make a tight connection.

Very unfriendly approach to me when you rescheduled my return flight due to your delay. No help to address my health concerns because I am diabetics and had orthopedic problems. No clear explanation where to clear customs. I had poor customer service

The seats were really cramped. The high backs on the chairs made you feel claustrophobic.

Boarding was chaotic and the flight left late but arrived at a decent time. This may have been because of the sxsw festival that was going on.

The flight got canceled and you just send an email in the middle of the night and no solution to how to get on the next flight or provide other solutions.

You cost me my time and did not compensate properly. Gfy.

Missed a connecting flight and SAS was at fault. I was awarded a $20 voucher in exchange for 8 hours of my time? Gfy.

Seat was lumpier than I’ve ever remembered it to be although comfortable when tilted back. I don’t recall being that hungry after being served food from SAS before. Flight attendant on the second flight to Aalborg seemed to be having a bad day.

All flights were on time! The crew was nice and polite Thank you. Food was awful. They give you terrible pasta or rice dish and make you pay for chicken if you’d like meat. When I asked for water with my tea, they told me, I’d have to pay 3 euros for water. Restrooms were filthy half way through the flight.

The meal offered was fish. I am allergic to fish. When I told her, she just took the box of food back without offering me an alternative.... I had to ask... can I then have a bag of chips? She did give it to me. I am a Euro Bonus gold member. Please just take the time to offer something else. Easy and from a customer service point of view, .... Considerate.

Pitch was very small. Knees were on the seat back in front of me.

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Several delays. Next flight was worse. Did not arrive home until 2am PT

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

First world problems, but still… We were seated in first class and asked for a cocktail on a very short, 50 minute flight. After our drink order was taken, a half hour went by, and we noticed that every other person in the small plane had been served except for us. We got up to ask about it, the drinks finally came, then were taken away three minutes later since the flight was so short. Really strange situation, on the other hand, we were in Utah.

We missed our flight. The boarding pass had the wrong gate and by the time we received the text from Kayak, our flight was already gone. I’ll never use Kayak again and will go direct to the airlines in the future.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Took off on time and successfully avoided weather that looked to be a problem along the way

All was good except for the seats, not very comfy.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

This flight didn't happen for me because of overbooking.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

Too much long line at the TSA and Security. Prepare for long walk for baggage claim.

The flight from Seattle was delayed, which made me miss my connection to Florence. I was re-booked NINE HOURS LATER!!! That’s basically a vacation day lost. British Airways needs to partner with other airlines when possible to get a more realistic travel time, if delays occur. I realize there aren’t many flights to Florence from London, so I would book differently were I to return. The actual flight from Seattle was very comfortable and the crew was great, no faults there. I enjoy British Airways, this was an anomaly.

The crew could not have been more helpful, my meal was excellent, I slept peacefully until right before landing, and the BA lounge was a godsend. The only negative I encountered was the coffee both on the plane and in the lounge. Not to my taste but that’s a personal preference.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The boarding process was quite loud and chaotic. The flight attendants kept barking over the PA system about people needing to only stow large items in the overhead bins. During the one and only service, I was hit by the service cart. At the same time, a passenger was returning from the bathroom and the crew definitely saw him but stopped a few seats short of allowing him to sit down before starting service and made him wait a good 10 minutes before passing his seat and allowing him to sit down, after which he had to ask for his snack and beverage or he would have been passed over. Neither flight attendant thanked passengers as they left; in fact, I did not see them again once the plane door was opened.

Cancelled flight minutes before boarding. Rescheduled flight was two days later

The flight attendants were EXTREMELY personable and appreciated the service, lights going off after dinner (probably the norm, but I haven’t flown evening overnight flights in a while). Thank you!

Business class seats were very dated on my plane. Very little storage, charging ports were not easily accessible, tv screen kept flopping away. Vegetarian food was disappointing: hardly any protein and severely under-seasoned. Crew was lovely.

The food was ok, but not great. They delayed boarding in Portland and did not enforce group boarding. But the crew was excellent, went above and beyond.

The food was pathetic. There wasn't much leg room and recline space for such a long flight. No tea/ coffee for a 2-3 hour connecting flight without purchasing! Really!?

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