Cheap flights from St. Louis to Copenhagen from $231
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Copenhagen departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from St. Louis to Copenhagen
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between St. Louis and Copenhagen?
What is the cheapest month to fly to Copenhagen?
The cheapest month to fly to Copenhagen from St. Louis is in February. Flight prices, which tend to average around $659, are often lower during this time because this is during the off-season. If you aren’t able to travel to Copenhagen during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $683.
What is the cheapest day to depart on your flight to Copenhagen?
The cheapest day to depart from St. Louis to Copenhagen is on a Tuesday when prices can be found for as low as $727. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Copenhagen for around $1,340.
What is the cheapest time of day to depart on your flight to Copenhagen?
Flying to Copenhagen from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $839 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around $1,047. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Copenhagen?
You are more likely to see cheaper flights to Copenhagen from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Copenhagen for around $864 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Copenhagen from St. Louis for as low as $725 on momondo.
What is the cheapest airline that flies from Lambert-St Louis to Kastrup Copenhagen?
Air Canada is the most popular carrier operating from Lambert-St Louis to Kastrup Copenhagen
What airlines fly to Copenhagen?
Air Canada, American Airlines and Scandinavian Airlines are the top three most popular airlines that fly to Copenhagen from St. Louis according to our data. Air Canada is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Copenhagen. Keep in mind that there are 7 different airlines that fly to Copenhagen on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Copenhagen
Cheap St. Louis to Copenhagen (STL to CPH) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Copenhagen
How far is Lambert-St Louis to Kastrup Copenhagen by plane?
The straight-line distance from Lambert-St Louis to Kastrup Copenhagen is 4507.7 mi. In terms of flight time, this usually takes a little over 10h 40m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
Prices for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
As of July 2025, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Kastrup Copenhagen Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Kastrup Copenhagen Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Kastrup Copenhagen Airport.
What documentation or ID do you need to fly to Kastrup Copenhagen Airport?
The travel and health documents required for your trip to Kastrup Copenhagen Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kastrup Copenhagen Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Copenhagen?
Based on momondo bookings for flights between St. Louis and Copenhagen, the leading airline is Air Canada, making up 24% of the total bookings. Other popular airlines include American Airlines with 23%, Scandinavian Airlines with 15%, and United Airlines with 15%.
Best airlines flying from St. Louis to Copenhagen
Compare and see reviews for airlines that fly from St. Louis to Copenhagen with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $590 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $625 | Free Cancellation | Rating 7.8 1,366 reviews | |||
| PriceFrom $639 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $653 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $655 | Free Cancellation | Rating 7.1 9,678 reviews | |||
| PriceFrom $683 | Free Cancellation | Rating 7.3 1,416 reviews | |||
| PriceFrom $783 | Free Cancellation | Rating 6.6 7,093 reviews |
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Why should I use momondo to find a flight deal from St. Louis to Copenhagen?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Copenhagen. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from St. Louis to Copenhagen with flexible booking policies on momondo?
Flights from St. Louis to Copenhagen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from St. Louis to Copenhagen?
Once all potential St. Louis to Copenhagen flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from St. Louis to Copenhagen right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to Copenhagen flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.