$478 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 6/3. 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 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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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

Thu, May 21 - Wed, May 27
Lufthansa Logo
10:10 am - 7:26 pm
CPH
-
STL
16h 16m
2 stops
Lufthansa Logo
12:55 pm - 11:55 am
STL
-
CPH
16h 00m
2 stops
$628Lufthansa
Mon, Jun 1 - Sun, Jun 7
Air Canada Logo
6:40 am - 12:06 pm
CPH
-
STL
36h 26m
2 stops
Air Canada Logo
1:05 pm - 8:55 am
STL
-
CPH
12h 50m
1 stop
$632Air Canada
Thu, May 21 - Wed, May 27
Air France Logo
1:55 pm - 11:21 pm
CPH
-
STL
16h 26m
1 stop
Air France Logo
11:25 am - 11:45 am
STL
-
CPH
17h 20m
1 stop
$643Air France
Mon, Jun 1 - Sun, Jun 7
Virgin Atlantic Logo
1:55 pm - 11:21 pm
CPH
-
STL
16h 26m
1 stop
Virgin Atlantic Logo
5:36 pm - 11:45 am
STL
-
CPH
11h 09m
1 stop
$660Virgin Atlantic
Mon, Jun 1 - Sun, Jun 7
Virgin Atlantic Logo
9:00 am - 9:09 pm
CPH
-
STL
19h 09m
2 stops
Virgin Atlantic Logo
5:36 pm - 11:45 am
STL
-
CPH
11h 09m
1 stop
$662Virgin Atlantic
Thu, May 21 - Wed, May 27
Virgin Atlantic Logo
1:55 pm - 11:21 pm
CPH
-
STL
16h 26m
1 stop
Virgin Atlantic Logo
1:32 pm - 11:45 am
STL
-
CPH
15h 13m
2 stops
$665Virgin Atlantic
Mon, Jun 1 - Sun, Jun 7
Multiple Airlines Logo
6:40 am - 1:25 pm
CPH
-
STL
13h 45m
1 stop
Multiple Airlines Logo
1:05 pm - 8:55 am
STL
-
CPH
12h 50m
1 stop
$668Multiple Airlines
Mon, Jun 1 - Sun, Jun 7
Multiple Airlines Logo
6:40 am - 1:25 pm
CPH
-
STL
13h 45m
1 stop
Multiple Airlines Logo
1:05 pm - 8:55 am
STL
-
CPH
12h 50m
1 stop
$677Multiple Airlines
Mon, Jun 1 - Sun, Jun 7
United Airlines Logo
6:40 am - 1:25 pm
CPH
-
STL
13h 45m
1 stop
United Airlines Logo
6:00 am - 10:40 am
STL
-
CPH
21h 40m
2 stops
$684United Airlines
Sun, Jun 14 - Sun, Jun 21
United Airlines Logo
6:20 am - 9:16 pm
CPH
-
STL
21h 56m
2 stops
United Airlines Logo
11:25 am - 9:35 am
STL
-
CPH
15h 10m
2 stops
$686United 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 flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Copenhagen, at $628 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 days.

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 April, where tickets cost $520 on average for return flights. On the other hand, the most expensive months are January and July, where the average cost of tickets from Denmark is $734 and $726 respectively. For one-way flights, the best month to travel is April with an average price of $570.

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 4 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$478
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Copenhagen to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the cheapest flight deal to St. Louis was found on the route from Copenhagen, at $628 return. The most popular connection is from New York to St. Louis and KAYAK users have found round-trip deals for as low as $295 in the last 3 days.

  • 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 2,970 direct flights from within Denmark to St. Louis. The most common day for departures is Sunday, 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 9677 reviews
8.1Crew
7.1Entertainment
7.3Comfort
7.7Boarding
6.6Food
Airline reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

6.0 GoodAnonymous, Apr 2026
HND - SFO
Read more United Airlines reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

Service was excellent. Flight was only about half full, which meant we had tons of room to stretch out. Boarding area was nice and well organized, flight attendants were super friendly and attentive and we loved the 3 snacks!

My flight was cancelled, but it was not Kayak's fault. Kayak did require me to pay for the ticket twice to two different venders who paid Lufthansa. Kayak/Lufthansa owes me for the first booking I made first was fraudulent on the part of the subcontracting ticket seller. There will be litigation over this issue under the current passenger protection laws.

flight was half full, plenty of empty seats, was able to lie down across 4 seats, food was good, arrived on time

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Our flight was completely cancelled with no options to rebook until 4 days later.

Generally good. Not their fault but the design of the Boeing 747 had seating supports directly in line with my legs. So my legs always had to straddle this support which caused body misallignment. Such poor design from Boeing. There was no USB port for me to charge my phone. The screen touch control was very poor.

I like crew. They are friendly. The flight was delayed to take off for 1hr and that caused panic at Houston Airport to catch connecting flight due to security check delay. If it has reached on time I would have sufficient time in collecting bags and security check

How about changing the personal out to more friendly human beings? This team was pretty arrogant. No fun!!

Everything could have been better. What needed to be wrong with United went wrong

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