Cheap flights from Copenhagen to St. Louis from $448
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Copenhagen to St. Louis departing on 6/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Copenhagen to St. Louis
Cheap round-trip flights
Virgin Atlantic flights from Copenhagen to St. Louis
Our best Virgin Atlantic deals on Copenhagen to St. Louis flight tickets
British Airways flights from Copenhagen to St. Louis
Our best British Airways deals on Copenhagen to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from Copenhagen to St. Louis
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 Copenhagen and St. Louis?
What is the cheapest month to fly to St. Louis?
In general, April is the cheapest month to fly from Copenhagen to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $470. The month of September is another great option to travel to St. Louis, with average flight prices from Copenhagen averaging around $470.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Sunday when prices can be found for as low as $431. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $740. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Copenhagen in the morning is the least expensive time of day to depart. momondo users have found prices as low as $577 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $601 per ticket.
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Copenhagen when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $544 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Copenhagen for as low as $441 on momondo.
When to book flights from Copenhagen to St. Louis
Cheap Copenhagen to St. Louis (CPH to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Copenhagen to St. Louis
How far is Kastrup Copenhagen to Lambert-St Louis by plane?
There are 4507.7 mi between Kastrup Copenhagen and Lambert-St Louis. Typically, this will take 13h 19m by plane in normal conditions.
When did momondo last update prices for flights from Kastrup Copenhagen Airport to Lambert-St Louis Airport?
Prices for flights from Kastrup Copenhagen Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Kastrup Copenhagen Airport to Lambert-St Louis Airport?
The number of operators available for flights from Kastrup Copenhagen Airport to Lambert-St Louis Airport is 3 as of June 2025.
How old do you have to be to fly from Kastrup Copenhagen Airport to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Kastrup Copenhagen Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Copenhagen to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Copenhagen to St. Louis is United Airlines (41% of total bookings). The next most popular airlines are American Airlines (32%) and Air Canada (27%).
Best airlines flying from Copenhagen to St. Louis
Compare and see reviews for airlines that fly from Copenhagen to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $322 | Free Cancellation | Rating 7.1 9,531 reviews | |||
| PriceFrom $482 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $557 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Copenhagen to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Copenhagen to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Copenhagen to St. Louis with flexible booking policies on momondo?
Yes. All flights to St. Louis from Copenhagen on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Copenhagen to St. Louis?
Once all potential Copenhagen to St. Louis 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 Copenhagen to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Copenhagen to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.